Test the combinational vision of your engine

Discussion of anything and everything relating to chess playing software and machines.

Moderator: Ras

Uri Blass
Posts: 10787
Joined: Thu Mar 09, 2006 12:37 am
Location: Tel-Aviv Israel

Test the combinational vision of your engine

Post by Uri Blass »

I had this position as an exercise many years ago.
It is also in one of my chess books now from a blitz game from 1966
Dvoretsky-Zilberstein and in the same page the book mention the words combinational vision as one of the titles in the page before giving the position.

I told the coach more than 20 years ago that the computer suggested Qf4 with a big advantage and the coach suggested to replace the computer.

Many years later
Stockfish cannot find Rxd7 Kxd7 Qa7 and also suggest Qf4 that suggest a very poor combinational vision by stockfish.

I believe that Rxd7 mates faster but I am not sure.

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1r2kb1r/1pRb1ppp/4p3/q2pP1B1/p2Q4/P2B4/1P3PPP/2R3K1 w k - 1 1

Stockfish_18101420_x64_modern:
1/1 00:00 255 128k +4.46 1.Qf4
2/2 00:00 419 210k +4.71 1.Qf4 b6
3/3 00:00 660 330k +11.42 1.Qf4 h6 2.Rxd7
4/4 00:00 1k 559k +5.62 1.Qf4 g6 2.Qf6 h6 3.Qxh8 hxg5
5/5 00:00 2k 1,037k +8.92 1.Qf4 h6 2.Rxd7 f6 3.exf6 Kxd7 4.Qxb8 hxg5 5.Qxb7+ Ke8
6/7 00:00 3k 856k +6.21 1.Qf4 Be7 2.Bxe7 Kxe7 3.Qg5+ Ke8 4.Qxg7
7/8 00:00 3k 1,081k +5.85 1.Qf4 Be7 2.Bxe7 Kxe7 3.Qg5+ Ke8 4.Qxg7 Rf8
8/9 00:00 6k 1,389k +5.21 1.Qf4 Be7 2.Bxe7 Kxe7 3.Qg5+ Ke8 4.Qxg7 Rf8 5.Bxh7
9/10 00:00 13k 1,812k +8.74 1.Qf4 Bxa3 2.Rxd7 0-0 3.bxa3 Rbe8 4.Rcc7 h6 5.Rxf7 Qe1+ 6.Bf1 Rxf7 7.Qxf7+ Kh7
10/14 00:00 22k 1,957k +9.06 1.Qf4 Bxa3 2.Rxd7 0-0 3.bxa3 b6 4.Be7 b5 5.Bxf8 Rxf8 6.Rb7
11/15 00:00 44k 2,437k +8.70 1.Qf4 Bc5 2.R7xc5 Qb6 3.Rc7 Qxb2 4.Rxd7 Qxc1+ 5.Qxc1 Kxd7 6.Qb2
12/16 00:00 56k 2,223k +8.81 1.Qf4 Bc5 2.R7xc5 Qb6 3.Rc7 Qb3 4.Rxd7 0-0 5.Qd2 Rbc8 6.Rcc7 Rxc7 7.Rxc7 Rb8
13/18 00:00 86k 2,382k +9.13 1.Qf4 Bc5 2.R7xc5 Qb6 3.Bb5 0-0 4.Bxd7 Qxb2 5.Be7 Qxa3 6.Bxf8 Rxf8 7.Bxa4 Qb2 8.Rc7
14/23 00:00 176k 2,173k +9.66 1.Qf4 Bc5 2.R7xc5 Qb6 3.Rc7 0-0 4.Rxd7 Qb3 5.Bf1 Qxb2 6.Be7 h6 7.Bxf8 Rxf8 8.Rcc7 g5 9.Qxa4
15/23 00:00 391k 2,623k +10.01 1.Qf4 Bc5 2.R7xc5 Qb6 3.Rc7 0-0 4.Rxd7 Qxb2 5.Rcc7 Qa1+ 6.Bf1 Kh8 7.Rxf7 Rxf7 8.Rxf7 Rg8 9.Rxb7 Ra8
16/27 00:00 448k 2,637k +9.96 1.Qf4 Bc5 2.R7xc5 Qb6 3.Rc7 0-0 4.Rxd7 Qb3 5.Bf1 Kh8 6.Rxf7 Rxf7 7.Qxf7 Qxb2 8.Qxe6 Rf8 9.Be3 Qb3 10.Qd6
17/28 00:00 2,003k 3,417k +11.09 1.Qf4 Bc5 2.R7xc5 Qa8 3.Qb4 0-0 4.Ra5 Qxa5 5.Qxa5 Bc6 6.Be3 Rfc8 7.Qb4 Ra8 8.f4 Rc7 9.Kf2 Rd7
18/31 00:01 5,816k 3,658k +12.41 1.Qf4 Qxc7 2.Rxc7 b5 3.Rxd7 Kxd7 4.Qxf7+ Kc6 5.Qxe6+ Kc7 6.Qf7+ Kc6 7.e6 Bd6 8.Qd7+ Kc5 9.e7 Rhe8 10.Be3+ d4 11.Bd2 Bxe7 12.Bb4+ Kb6 13.Bxe7 Rxe7 14.Qxe7 h6 15.Qxg7
19/34 00:02 7,755k 3,718k +12.85 1.Qf4 Bc5 2.R7xc5 Qxc5 3.Rxc5 Bc6 4.Qh4 Rc8 5.Be7 Kd7 6.Bd6 f6 7.Qh5 fxe5 8.Bxe5 Rhe8 9.Qxh7 Re7 10.Qg6 b5 11.Bxg7
20/38 00:03 12,754k 3,792k +13.42 1.Qf4 Qxc7 2.Rxc7 b5 3.Rxd7 Kxd7 4.Qxf7+ Kc6 5.Qxe6+ Kc7 6.Qf7+ Kc6 7.e6 Bd6 8.Qd7+ Kc5 9.e7 h6 10.Be3+ d4 11.Be4 Rhc8 12.e8R dxe3 13.Rxc8+ Rxc8 14.Qxc8+ Kd4 15.Qg4 exf2+ 16.Kxf2 Be5
21/38+ 00:03 13,737k 3,796k +13.51 1.Qf4 Qxc7 2.Rxc7 b5 3.Rxd7 Kxd7 4.Qxf7+ Kc6 5.Qxe6+ Kc7 6.Qf7+ Kc6 7.e6 Bd6 8.Qd7+ Kc5 9.e7 h6 10.Be3+ d4 11.Be4 Rhc8 12.e8R dxe3 13.Rxc8+ Rxc8 14.Qxc8+ Kd4 15.Qg4 exf2+ 16.Kxf2 Bxh2
21/38+ 00:03 14,224k 3,795k +13.60 1.Qf4 Qxc7 2.Rxc7 Bc5 3.Rxc5 h6 4.Qh4 Rg8
21/38+ 00:04 15,286k 3,812k +13.73 1.Qf4 Qxc7 2.Rxc7 Bc5 3.Rxc5 h6 4.Qh4 Ra8
21/38+ 00:04 15,959k 3,817k +13.91 1.Qf4 Qxc7 2.Rxc7 Bc5 3.Rxc5 Bc6 4.Qh4 Rc8 5.Be7 Kd7 6.Qb4 Rhd8
21/39 00:04 18,071k 3,847k +14.05 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Rc8 7.Bb5 h6 8.Bxa4 Kh7 9.Qc5 Kg8 10.Qd6 Kh7 11.Bxc6 bxc6 12.Rxc6 Rxc6
22/28+ 00:04 19,263k 3,862k +14.14 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Rc8 7.Bb5 h6 8.Bxa4 Kh7 9.Qb6 Kg6 10.f4 Bxa4 11.Rxc8 Kf5
22/32+ 00:05 20,173k 3,861k +14.22 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Rc8 7.Bb5 h5
22/32+ 00:05 20,569k 3,859k +14.35 1.Qf4 Bc5 2.R7xc5 Qb6 3.Rc7 Qb3 4.Rxd7 0-0 5.Bf1 h6 6.Be7 Kh7 7.Bxf8 Rxf8 8.Rcc7 Rg8 9.Rxf7 Qd1 10.Qf6 Kh8
22/32- 00:05 21,984k 3,856k +13.56 1.Qf4 Bd6
22/32+ 00:06 23,180k 3,854k +14.25 1.Qf4 Bd6 2.Rxd7 0-0 3.exd6 Qb6 4.Rcc7 e5 5.Rxf7 Qxc7 6.Rxf8+ Rxf8 7.Bxh7+ Kxh7 8.Qh4+ Kg6 9.dxc7 Ra8
22/32 00:06 24,550k 3,858k +14.17 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Rc8 7.Bb5 h6 8.Bxa4 g6 9.Qd6 Kg7 10.f4 Re8 11.Bxc6 Rc8 12.Qd7 Rxc6 13.Rxc6 bxc6
23/30+ 00:06 25,835k 3,853k +14.26 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Rc8 7.Bb5 h5
23/33+ 00:06 26,311k 3,851k +14.34 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Rc8 7.Bb5 h6 8.Bxc6 Rxc6 9.Rxc6 bxc6 10.Qxa4 Kf8
23/47+ 00:07 27,928k 3,856k +14.47 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Rc8 7.Bb5 d4
23/47 00:07 30,020k 3,866k +14.58 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Rc8 7.Bb5 g6 8.Bxc6 Rxc6 9.Rxc6 bxc6 10.Qd6 Kg7 11.Qxc6 Kf8 12.Qxa4 Kg7 13.Qa8 h5 14.Qc8 h4 15.Qd8 h3
24/37+ 00:08 32,344k 3,868k +14.67 1.Qf4 Be7 2.Bxe7 Qb5
24/37+ 00:08 33,942k 3,864k +14.75 1.Qf4 Bc5 2.R7xc5 Qxc5 3.Rxc5 Bc6 4.Qb4 0-0 5.Qh4 h6 6.Bf6 Bd7
24/37 00:09 35,766k 3,863k +14.80 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Rc8 7.Bb5 g6 8.Bxc6 Rxc6 9.Rxc6 bxc6 10.Qd6 Kg7 11.Qxc6 Kg8 12.Qxa4 Kf8 13.Qa8+ Ke7 14.Qh8 h5 15.Qc8 g5 16.Qh8
25/35+ 00:09 37,139k 3,866k +14.89 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Rc8 7.Bb5 g6 8.Bxc6 Rxc6 9.Rxc6 bxc6 10.Qd6 Kg7 11.Qxc6 Kg8 12.Qxa4 Kf8 13.Qa8+ Ke7 14.Qh8 h5 15.Qc8 h4
25/39+ 00:10 39,628k 3,877k +14.98 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Rc8 7.Bb5 Re8
25/39+ 00:10 40,580k 3,878k +15.11 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Rc8 7.Bb5 g6 8.Bxc6 Rxc6 9.Rxc6 bxc6 10.Qd6 Kg7 11.Qxc6 Kg8 12.Qxa4 Kf8 13.Qa8+ Ke7 14.Qh8 d4
25/39 00:11 45,082k 3,902k +15.21 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Rc8 7.Bb5 g6 8.Bxc6 bxc6 9.Qd6 c5 10.Rxc5 Rf8 11.Rc7 Ra8 12.Qc6 Rf8 13.Re7 d4 14.Qxa4 d3 15.Qd7 d2 16.f4 d1Q+ 17.Qxd1 Kg7
26/40+ 00:12 49,643k 3,925k +15.30 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Rc8 7.Bb5 g6 8.Bxc6 bxc6 9.Qd6 c5 10.Rxc5 Rf8 11.Rc7 Ra8 12.Qc5 Re8 13.Rc8 Rxc8 14.Qxc8+ Kg7 15.Qa8 g5 16.Qxa4 Kg6 17.Qe8 h6
26/42 00:13 54,418k 3,930k +15.33 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Rc8 7.Ba6 bxa6 8.Rxc6 Ra8 9.Qb7 Rf8 10.Rc8 h6 11.Rxf8+ Kxf8 12.Qb8+ Ke7 13.Qc7+ Ke8 14.Qc8+ Ke7 15.Qxa6 h5 16.Qd6+ Ke8 17.Qb8+ Kd7 18.Qa7+ Ke8 19.Qxa4+ Ke7 20.Qc6 Kd8 21.Qa8+ Ke7 22.Qh8
27/39+ 00:15 60,886k 3,931k +15.42 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Rc8 7.Ba6 bxa6 8.Rxc6 Ra8 9.Qb7 Rf8 10.Rc8 h6 11.Rxf8+ Kxf8 12.Qb8+ Ke7 13.Qc7+ Ke8 14.Qc8+ Ke7 15.Qxa6 h5 16.Qxa4 d4
27/39 00:16 63,009k 3,934k +15.42 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Rc8 7.Ba6 bxa6 8.Rxc6 Ra8 9.Qb7 Rf8 10.Rc8 h6 11.Rxf8+ Kxf8 12.Qb8+ Ke7 13.Qc7+ Ke8 14.Qc8+ Ke7 15.Qxa6 h5 16.Qa5 f6 17.Qc7+ Kf8 18.Qd8+ Kf7
28/44+ 00:17 69,320k 3,935k +15.51 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Rc8 7.Ba6 bxa6 8.Rxc6 Ra8 9.Qb7 Rf8 10.Rc8 h6 11.Rxf8+ Kxf8 12.Qb8+ Ke7 13.Qh8 h5 14.Qxg7 a5
28/45+ 00:18 73,925k 3,947k +15.59 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Rc8 7.Ba6 bxa6 8.Rxc6 Ra8 9.Qb7 Rf8 10.Rc8 h6 11.Rxf8+ Kxf8 12.Qb8+ Ke7 13.Qh8 a5
28/45+ 00:19 79,043k 3,964k +15.72 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Rc8 7.Ba6 bxa6 8.Rxc6 Ra8 9.Qb7 Rf8 10.Rc8 h6 11.Rxf8+ Kxf8 12.Qb8+ Ke7 13.Qh8 h5 14.Qxg7 d4
28/45+ 00:21 83,945k 3,997k +15.91 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Rc8 7.Ba6 bxa6 8.Rxc6 Ra8 9.Qb7 Rf8 10.Rc8 h6 11.Rxf8+ Kxf8 12.Qb8+ Ke7 13.Qh8 h5 14.Qxg7 Ke8 15.Qh8+ Ke7 16.Qxh5 Ke8 17.Qh4 a5
28/46 00:22 89,691k 4,008k +16.05 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Rc8 7.Ba6 bxa6 8.Rxc6 Ra8 9.Qb7 Rf8 10.Rc8 g6 11.Qxa6 Rxc8 12.Qxc8+ Kg7 13.Qd8 h6 14.Qe8 g5 15.Qd8 Kh7 16.Qf6 Kg8 17.Qxh6 g4 18.Qg5+ Kh7 19.Qh4+ Kg7 20.Qxg4+ Kh6 21.Qxa4
29/47+ 00:25 103,087k 4,055k +16.14 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Rc8 7.Ba6 bxa6 8.Rxc6 Ra8 9.Qb7 Rf8 10.Rc8 g6 11.Qxa6 Rxc8 12.Qxc8+ Kg7 13.Qd8 h6 14.Qe8 g5 15.Qe7 Kg8 16.Qf6 h5
29/47+ 00:26 105,525k 4,056k +16.23 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 g6
29/47+ 00:26 106,191k 4,058k +16.36 1.Qf4 Be7 2.Bxe7 g6
29/48+ 00:28 117,640k 4,087k +16.54 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Rc8 7.Ba6 bxa6 8.Rxc6 Ra8 9.Qb7 Rf8 10.Rc8 g6 11.Rxf8+ Kxf8 12.Qxa6 Kg8 13.Qc8+ Kg7 14.Qd8 h5
29/48 00:30 123,573k 4,096k +16.54 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Rc8 7.Ba6 bxa6 8.Rxc6 Rf8 9.Qxa4 h6 10.Qxa6 Kh7 11.Qb7 h5 12.Qe7 Kg8 13.Qc5 Re8 14.Rc8 Rxc8 15.Qxc8+ Kh7 16.Qd7 Kg6 17.Qe8 Kf5 18.Qxf7+ Kxe5 19.Qxg7+ Kd6 20.Qg5 e5 21.Qf6+ Kc5 22.Qxe5
30/47+ 00:33 136,900k 4,108k +16.63 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Rc8 7.Ba6 bxa6 8.Rxc6 Rf8 9.Qxa4 h6 10.Qxa6 Kh7 11.Qb7 h5 12.Rc8 Rxc8 13.Qxc8 Kh6 14.Qh8+ Kg6 15.Qe8 d4 16.Qd7 h4 17.f3 h3 18.gxh3 d3 19.Qxd3+ Kh6 20.Qd7 f6
30/52+ 00:36 148,609k 4,127k +16.71 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Rc8 7.Ba6 bxa6 8.Rxc6 Rf8 9.Qxa4 h6 10.Qxa6 Kh7 11.Qb7 h5 12.Rc8 Rxc8 13.Qxc8 Kh6 14.Qh8+ Kg6 15.Qe8 d4 16.Qd7 h4 17.f3 h3 18.gxh3 f6 19.Qxe6 d3 20.Qg4+ Kh6 21.Qf4+ Kg6 22.e6 d2 23.Qxd2 Kh7 24.e7 g6
30/52 00:36 150,818k 4,123k +16.71 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Rc8 7.Ba6 bxa6 8.Rxc6 Rf8 9.Qxa4 h6 10.Qxa6 Kh7 11.Qb7 h5 12.Rc7 Kg8 13.Rc8 Rxc8 14.Qxc8+ Kh7 15.Qf8 Kg6 16.Qe8 d4 17.Qd7 h4 18.f3 h3 19.gxh3 d3 20.Qxd3+ Kh6 21.Qd7 Kg6 22.Qe8
31/53+ 00:41 172,830k 4,125k +16.80 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Rc8 7.Ba6 bxa6 8.Rxc6 Rf8 9.Qxa4 h6 10.Qxa6 Kh7 11.Qb7 h5 12.Rc7 Kg8 13.Rc8 Rxc8 14.Qxc8+ Kh7 15.Qf8 Kg6 16.Qe8 d4 17.Qd7 h4 18.f3 h3 19.gxh3 f6
31/53 00:42 176,708k 4,122k +16.80 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Rc8 7.Ba6 bxa6 8.Rxc6 Rf8 9.Qxa4 h6 10.Qxa6 Kh7 11.Qb7 h5 12.Rc7 Kg8 13.Rc8 Rxc8 14.Qxc8+ Kh7 15.Qf8 Kg6 16.Qe8 d4 17.Qd7 h4 18.f3 h3 19.gxh3 f6 20.Qxe6 d3 21.Qg4+ Kf7 22.Qd7+ Kg6 23.Qxd3+ Kg5
32/55+ 00:49 203,116k 4,119k +16.89 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Rc8 7.Ba6 bxa6 8.Rxc6 Rf8 9.Qxa4 h6 10.Qxa6 Kh7 11.Qb7 h5 12.Rc7 Kg8 13.Rc8 Rxc8 14.Qxc8+ Kh7 15.Qe8 Kg6 16.Qe7 d4 17.Qh4 f6 18.Qe4+ Kf7 19.Qxd4 Kg6 20.Qd3+ Kf7
32/55 00:50 209,168k 4,112k +16.89 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Rc8 7.Ba6 bxa6 8.Rxc6 Rf8 9.Qxa4 h6 10.Qxa6 Kh7 11.Qb7 h5 12.Rc7 Kg8 13.Rc8 Rxc8 14.Qxc8+ Kh7 15.Qe8 Kg6 16.Qe7 d4 17.Qh4 f6 18.Qe4+ Kf7 19.Qxd4 fxe5 20.Qxe5 g6 21.Qh8 Ke7 22.Qg7+ Kd6 23.Qxg6 h4
33/55+ 00:57 238,581k 4,136k +16.98 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Rc8 7.Ba6 bxa6 8.Rxc6 Rf8 9.Qxa4 h6 10.Qxa6 Kh7 11.Qb7 Re8
33/55+ 01:02 261,246k 4,170k +17.06 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Rc8 7.Ba6 bxa6 8.Rxc6 Rf8 9.Qxa4 h6 10.Qxa6 Kh7 11.Rc8 Rxc8 12.Qxc8 h5 13.Qd7 Kg6 14.Qe8 d4 15.Qd7 f6 16.Qxe6 d3
33/55+ 01:03 265,333k 4,170k +17.19 1.Qf4 Be7 2.Bxe7 Rd8
33/55 01:09 291,766k 4,184k +17.21 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Rc8 7.Ba6 bxa6 8.Rxc6 Rf8 9.Qxa4 h6 10.Qxa6 Kh7 11.Rc8 Rxc8 12.Qxc8 h5 13.Qe8 Kg6 14.Qe7 d4 15.Qd7 d3 16.Qxd3+ Kh6 17.Qd7 Kg6 18.Qe8 Kf5 19.Qxf7+ Kxe5 20.Qxg7+ Kd6 21.f3 Kd5 22.Qg5+ Kd6 23.Qxh5 Kc6 24.Qe5
34/55+ 01:17 327,875k 4,204k +17.29 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Rc8 7.Ba6 bxa6 8.Rxc6 Rf8 9.Qxa4 h6 10.Qxa6 Kh7 11.Rc8 Rxc8 12.Qxc8 h5 13.Qe8 Kg6 14.Qe7 d4 15.Qd7 d3 16.Qxd3+ Kh6 17.Qd7 Kg6 18.f3 Kf5 19.Qxf7+ Kxe5 20.Qxg7+ Kd6 21.Qg5 Kc6 22.Qxh5 Kd7
34/55+ 01:24 355,532k 4,217k +17.38 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Rc8 7.Ba6 bxa6 8.Rxc6 Rf8 9.Qxa4 h6 10.Qxa6 Kh7 11.Rc8 Rxc8 12.Qxc8 h5 13.Qe8 Kg6 14.Qe7 d4 15.Qd7 d3 16.Qxd3+ Kh6 17.Qd7 Kg6 18.f3 Kf5 19.Qxf7+ Kxe5 20.Qxg7+ Kd6 21.Qg5 Kc7
34/55+ 01:31 384,030k 4,216k +17.51 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Rc8 7.Ba6 bxa6 8.Rxc6 Rf8 9.Qxa4 h6 10.Qxa6 Kh7 11.Rc8 Rxc8 12.Qxc8 h5 13.Qe8 Kg6 14.Qe7 d4 15.Qd7 f6 16.Qxe6 d3 17.Qd6 Kh7
34/56+ 01:37 411,421k 4,219k +17.70 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Rc8 7.Ba6 bxa6 8.Rxc6 Rf8 9.Qxa4 h6 10.Qxa6 Kh7 11.Rc8 Rxc8 12.Qxc8 h5 13.Qe8 Kg6 14.Qe7 d4 15.Qd7 f6 16.Qxe6 d3 17.Qd6 h4
34/62+ 01:46 449,924k 4,213k +17.95 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Rc8 7.Ba6 bxa6 8.Rxc6 Rf8 9.Qxa4 h6 10.Qxa6 Kh7 11.Rc8 Rxc8 12.Qxc8 h5 13.Qe8 Kg6 14.Qe7 d4 15.Qd7 f6 16.Qxe6 d3 17.Qd6 d2 18.e6 f5
34/62 01:57 496,756k 4,232k +18.04 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Rc8 7.Ba6 bxa6 8.Rxc6 Rf8 9.Qxa4 h6 10.Qxa6 Kh7 11.Rc8 Kg8 12.Rxf8+ Kxf8 13.Qa8+ Ke7 14.Qh8 g6 15.Qxh6 Ke8 16.Qh8+ Ke7 17.Qb8 d4 18.Qd6+ Ke8 19.Qxd4 Ke7 20.Qb4+ Ke8 21.Qd6 g5 22.Qc7 g4 23.Qd6 g3 24.hxg3
35/49+ 02:01 514,496k 4,233k +18.13 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Rc8 7.Ba6 Rb8
35/50- 02:02 521,184k 4,239k +17.95 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Rc8 7.Bb5
35/53+ 02:04 526,443k 4,243k +18.08 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Rc8 7.Ba6 g6 8.Bxb7 Bxb7 9.Rxc8+ Bxc8 10.Qb8 Kf8 11.Qxc8+ Kg7
35/53+ 02:07 543,486k 4,247k +18.27 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Rc8 7.Ba6 g6 8.Bxb7 Bxb7 9.Rxc8+ Bxc8 10.Qb8 Kf8 11.Qxc8+ Ke7
35/53+ 02:18 590,946k 4,254k +18.52 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Rc8 7.Ba6 g6 8.Bxb7 Bxb7 9.Rxc8+ Bxc8 10.Qb8 Kf8 11.Qxc8+ Ke7
35/53+ 02:40 684,364k 4,270k +18.85 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Rc8 7.Ba6 g6 8.Bxb7 Re8
35/53+ 02:49 725,108k 4,273k +19.30 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Rc8 7.Ba6 g6 8.Bxb7 Rc7
35/54+ 03:24 879,285k 4,292k +19.88 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Rc8 7.Ba6 g6 8.Bxb7 Re8
35/55+ 04:15 1,103,804k 4,313k +20.63 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Rc8 7.Ba6 g6 8.Bxb7 Re8
35/55+ 05:03 1,316,403k 4,340k +21.58 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Rc8 7.Ba6 g6 8.Bxb7 h5
35/55+ 06:39 1,700,036k 4,255k +22.80 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 Rc8 5.Bd6 Rd8 6.Qg5 Rxd6 7.exd6 0-0 8.Qe7 g6 9.d7 e5 10.d8Q Bb5
35/58+ 08:36 2,180,754k 4,222k +24.35 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 Rc8 5.Bd6 Rd8 6.Qg5 Rxd6 7.exd6 0-0 8.Qe7 g6 9.d7 e5 10.d8Q Rxd8 11.Qxd8+ Kg7 12.Rxc6 Kh6
35/58+ 11:23 2,973,886k 4,352k +26.30 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 Rc8 5.Bd6 Rd8 6.Qg5 Rxd6 7.exd6 0-0 8.Qe7 g6 9.d7 e5 10.d8Q Rxd8 11.Qxd8+ Kg7 12.Rxc6 e4
35/62 14:39 3,883,121k 4,415k +27.70 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Ra8 7.Bb5 Bxb5 8.Qxb5 b6 9.Qxb6 g6 10.Qb7 Rd8 11.Rc8 Rxc8 12.Qxc8+ Kg7 13.Qd8 h5 14.Qe7 Kg8 15.Qe8+ Kg7 16.Qd8 Kh6 17.Qh8+ Kg5 18.Qf6+ Kh6 19.Qxf7 Kg5 20.Qxe6 Kh6 21.Qxd5 Kg7 22.Qd7+ Kh6 23.Qf7 Kg5 24.Qf6+ Kh6 25.Qh8+ Kg5 26.Qd8+ Kg4 27.Qd7+ Kf4 28.Qd4+ Kf5 29.Qd3+ Kg5 30.Qd2+ Kg4
36/58+ 15:04 3,996,458k 4,421k +27.78 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Ra8 7.Bb5 Bxb5 8.Qxb5 Kh8
36/58+ 15:06 4,006,854k 4,421k +27.87 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 d4
36/58+ 15:09 4,020,390k 4,423k +28.00 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Ra8 7.Bb5 Kh8
36/59+ 15:14 4,045,739k 4,425k +28.18 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Ra8 7.Bb5 Bxb5 8.Qxb5 b6 9.Qxb6 g6 10.Qb7 Rd8 11.Rc8 Rxc8 12.Qxc8+ Kg7 13.Qe8 Kh6
36/62- 16:04 4,289,378k 4,448k +26.62 1.Qf4 Bc5
36/62+ 16:10 4,316,465k 4,448k +28.02 1.Qf4 Bc5 2.R7xc5 Qb6 3.Rc7 Qb3 4.Rxd7 0-0 5.Bf1 h5 6.Rcc7 Qb6 7.Be7 Qc6 8.Bxf8 Qxd7 9.Rxd7 Rxf8 10.Rxb7 f5 11.Qxa4 d4 12.Qa7 Rf7 13.Rxf7 d3
36/62+ 17:34 4,700,723k 4,457k +28.46 1.Qf4 Bc5 2.R7xc5 Qb6 3.Rc7 Qb3 4.Rxd7 0-0 5.Bf1 h5 6.Rcc7 Qb6 7.Be7 Qc6 8.Bxf8 Qxd7 9.Rxd7 Rxf8 10.Bd3 b6 11.Rc7 b5 12.Bxb5 h4 13.Qxh4 f5
36/62+ 17:50 4,776,234k 4,460k +29.04 1.Qf4 Bc5 2.R7xc5 Qb6 3.Rc7 Qb3 4.Rxd7 0-0 5.Bf1 h5 6.Rcc7 Qb6 7.Be7 Qd4 8.Qxd4 Rfc8 9.Rxc8+ Rxc8 10.Rxb7 Kh8
36/62 19:57 5,373,818k 4,486k +29.38 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Re8 7.Bb5 h6 8.Bxc6 bxc6 9.Rxc6 Kh8 10.Qxa4 h5 11.Rc7 Rb8 12.Qc2 Rg8 13.Rc8 h4 14.Rxg8+ Kxg8 15.Qc8+ Kh7 16.Qd8 h3 17.gxh3 Kh6 18.Qe8 Kg6 19.Qd7 d4 20.f3 f6 21.Qxe6 d3 22.Qg4+ Kh6 23.e6 g5 24.e7 f5 25.Qa4 d2 26.e8Q
37/64+ 21:00 5,668,948k 4,496k +29.47 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Re8 7.Bb5 h6 8.Bxc6 bxc6 9.Rxc6 Kh8 10.Qb7 Rf8 11.Rc8 Kg8 12.Rxf8+ Kxf8 13.Qd7 g6 14.Qxa4 Ke7 15.Qh4+ Ke8 16.Qxh6 d4 17.Qh8+ Kd7 18.Qh4 d3
37/66+ 22:06 5,982,087k 4,510k +29.56 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Re8 7.Bb5 h6 8.Bxc6 bxc6 9.Rxc6 Kh8 10.Qb7 Rf8 11.Rc8 Kg8 12.Rxf8+ Kxf8 13.Qd7 g6 14.Qxa4 Ke7 15.Qh4+ Kd7
37/70+ 23:17 6,295,211k 4,505k +29.69 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Re8 7.Bb5 h6 8.Bxc6 bxc6 9.Rxc6 Kh8 10.Qb7 Rf8 11.Rc8 Kg8 12.Rxf8+ Kxf8 13.Qd7 g6 14.Qxa4 Ke7 15.Qh4+ Ke8 16.Qxh6 Ke7
37/70+ 24:33 6,651,317k 4,513k +29.87 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Re8 7.Bb5 h6 8.Bxc6 bxc6 9.Rxc6 Kh8 10.Qb7 Rf8 11.Rc8 Kg8 12.Rxf8+ Kxf8 13.Qc8+ Ke7 14.Qh8 d4 15.Qxg7 d3 16.Qxh6 Ke8
37/70+ 26:12 7,111,829k 4,522k +30.12 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Re8 7.Bb5 h6 8.Bxc6 bxc6 9.Rxc6 Kh8 10.Rc7 h5 11.Qxa4 Rb8 12.Qc2 Kg8 13.Rc8+ Rxc8 14.Qxc8+ Kh7 15.Qe8 Kg6 16.Qe7 d4 17.Qd7 h4 18.Qxd4 Kf5 19.f3 Kg6 20.Qd7 h3
37/70+ 27:49 7,573,806k 4,537k +30.46 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Re8 7.Bb5 h6 8.Bxc6 bxc6 9.Rxc6 Kh8 10.Rc7 h5 11.Qxa4 Rb8 12.Qc2 Kg8 13.Rc8+ Rxc8 14.Qxc8+ Kh7 15.Qe8 Kg6 16.Qe7 d4 17.Qd7 f6
37/70+ 29:46 8,132,597k 4,553k +30.90 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Re8 7.Bb5 h6 8.Bxc6 bxc6 9.Rxc6 Rd8
37/70+ 32:07 8,788,633k 4,559k +31.48 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Re8 7.Bb5 h6 8.Bxc6 bxc6 9.Rxc6 f5
37/70+ 34:28 9,440,305k 4,564k +32.23 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Re8 7.Bb5 h6 8.Bxc6 bxc6 9.Rxc6 Kh8 10.Rc7 h5 11.Qxa4 Rd8
37/70+ 36:41 10,051,579k 4,566k +33.19 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Re8 7.Bb5 h6 8.Bxc6 bxc6 9.Rxc6 Kh8 10.Rc7 h5 11.Qxa4 Rd8
37/70+ 39:05 10,727,181k 4,573k +34.41 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Re8 7.Bb5 h6 8.Bxc6 bxc6 9.Rxc6 Kh8 10.Rc7 h5 11.Qxa4 Rd8
37/70+ 41:22 11,357,487k 4,576k +35.95 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Re8 7.Bb5 h6 8.Bxc6 bxc6 9.Rxc6 Kh8 10.Rc7 h5 11.Qxa4 Rd8
37/70+ 43:45 12,026,906k 4,581k +37.91 1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0 5.Bxb8 Rxb8 6.Qb4 Re8 7.Bb5 h6 8.Bxc6 Rb8
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User avatar
Eelco de Groot
Posts: 4658
Joined: Sun Mar 12, 2006 2:40 am
Full name:   Eelco de Groot

Re: Test the combinational vision of your engine

Post by Eelco de Groot »

Hi Uri,

Curious that Stockfish sees something completely different from Kaissa here! Kaissa IV only considers Rxd7, but expects the reply to be 1... f5, 1... f6 or 1... Bc5.

Code: Select all

1r2kb1r/1pRb1ppp/4p3/q2pP1B1/p2Q4/P2B4/1P3PPP/2R3K1 w k -

Engine: Kaissa IV (i7 6700, 1 thread, 512 MB)
by T. Romstad, M. Costalba, J. Kiiski, G. Linscott

21/34  0:01   +10.24   1.Rxd7 Bc5 2.Rxc5 Qe1+ 3.Bf1 O-O 
                       4.Be7 b6 5.Rcc7 Qe4 6.Qxe4 dxe4 
                       7.Rb7 f6 8.Bxf8 Rxb7 9.Rxb7 Kxf8 
                       10.exf6 gxf6 11.Rxb6 Kf7 12.Bb5 f5 
                       13.Rb7+ Kg6 14.Bxa4 (2.504.492) 1671 

22/31  0:01   +10.32   1.Rxd7 Bc5 2.Rxc5 Qe1+ 3.Bf1 O-O 
                       4.Be7 g5 5.Rcc7 Rfc8 6.Rxc8+ Rxc8 
                       7.Bxg5 Qe4 8.Qxe4 dxe4 9.Rxb7 Kg7 
                       10.Ra7 Kg6 11.Bf6 Rc1 12.Rxa4 Kf5 
                       13.Ra8 Rd1 14.Rh8 (3.129.200) 1695 

23/39  0:03   +11.80++ 1.Rxd7 (5.462.989) 1724 

23/39  0:03   +12.23++ 1.Rxd7 (6.224.868) 1749 

23/39  0:03   +12.46   1.Rxd7 f5 2.exf6 Kxd7 3.fxg7 Rg8 
                       4.gxf8N+ Rbxf8 5.Bd2 Rc8 6.Rxc8 Qxd2 
                       7.Bb5+ Kxc8 8.Qxd2 Kb8 9.Bxa4 Ka7 
                       10.Qf4 Ka6 11.Qd6+ Ka7 12.Qxe6 Rf8 
                       13.Qxd5 Ka6 14.Qc4+ (6.915.907) 1757 

24/39  0:04   +12.37-- 1.Rxd7 f5 (7.230.542) 1763 

24/39  0:04   +12.29-- 1.Rxd7 f5 (7.236.507) 1763 

24/39  0:04   +12.19-- 1.Rxd7 f5 (7.261.252) 1763 

24/39  0:04   +12.04-- 1.Rxd7 f5 (7.287.477) 1760 

24/39  0:04   +11.85-- 1.Rxd7 f5 (7.305.518) 1760 

24/39  0:04   +11.60-- 1.Rxd7 f5 (7.415.775) 1761 

24/39  0:04   +11.80++ 1.Rxd7 (7.589.168) 1760 

24/39  0:04   +12.19++ 1.Rxd7 (8.280.899) 1757 

24/39  0:05   +12.66++ 1.Rxd7 (9.058.308) 1760 

24/39  0:05   +13.22++ 1.Rxd7 (9.848.380) 1767 

24/47  0:06   +13.19   1.Rxd7 Bc5 2.Qf4 O-O 3.Bh6 Bxf2+ 
                       4.Qxf2 Ra8 5.Bxg7 Qa7 6.Qxa7 Rxa7 
                       7.Bxf8 Kxf8 8.Rcc7 Kg8 9.Rxf7 Ra8 
                       10.Bxh7+ Kh8 11.Rfe7 d4 12.Rxb7 d3 
                       13.Bxd3 Kg8 14.Rxe6 (11.013.499) 1787 

25/29  0:06   +13.26++ 1.Rxd7 (11.853.922) 1792 

25/32  0:06   +13.34++ 1.Rxd7 (12.310.158) 1796 

25/32  0:07   +13.45++ 1.Rxd7 (12.692.135) 1798 

25/32  0:07   +13.59++ 1.Rxd7 (13.018.491) 1803 

25/32  0:07   +13.78++ 1.Rxd7 (13.534.844) 1806 

25/32  0:07   +13.11-- 1.Rxd7 Bd6 (14.000.653) 1804 

25/32  0:07   +13.56++ 1.Rxd7 (14.133.115) 1805 

25/37  0:08   +12.78-- 1.Rxd7 f6 (15.391.989) 1826 

25/37  0:08   +12.36-- 1.Rxd7 f6 (15.653.004) 1826 

25/49  0:08   +12.64   1.Rxd7 f6 2.exf6 Kxd7 3.fxg7 Rg8 
                       4.gxf8N+ Rbxf8 5.Bd2 Rc8 6.Rxc8 Qxd2 
                       7.Bb5+ Kd6 8.Qxd2 Rxc8 9.Qe3 e5 
                       10.Bxa4 Rc6 11.Bxc6 bxc6 12.Qh6+ Kc5 
                       13.Qxh7 Kd4 14.Qg6 (16.082.274) 1835 

26/35  0:09   +12.71++ 1.Rxd7 (17.850.422) 1848 

26/35  0:09   +12.79++ 1.Rxd7 (17.966.849) 1848 

26/35  0:09   +12.90++ 1.Rxd7 (18.289.078) 1848 

26/35  0:10   +13.04++ 1.Rxd7 (18.547.644) 1847 

26/35  0:10   +13.23++ 1.Rxd7 (18.787.075) 1846 

26/35  0:10   +13.47++ 1.Rxd7 (19.060.409) 1845 

26/35  0:10   +13.76++ 1.Rxd7 (19.382.484) 1846 

26/35  0:10   +12.56-- 1.Rxd7 Bc5 (20.182.137) 1848 

26/35  0:11   +13.34++ 1.Rxd7 (20.491.869) 1849 

26/35  0:11   +13.83++ 1.Rxd7 (20.892.565) 1851 

26/35  0:12   +14.41++ 1.Rxd7 (23.083.836) 1858 

26/37  0:14   +15.10++ 1.Rxd7 (26.087.322) 1862 

26/44  0:15   +15.92++ 1.Rxd7 (29.526.850) 1875 

26/56  0:16   +15.76   1.Rxd7 f6 2.Rdc7 fxg5 3.Qg4 Qxc7 
                       4.Rxc7 Kd8 5.Rf7 Rc8 6.Qxe6 Rc1+ 
                       7.Bf1 Rc7 8.Rxf8+ Rxf8 9.Qd6+ Kc8 
                       10.Qxf8+ Kd7 11.Qxg7+ Kc6 12.Qf6+ Kd7 
                       13.Qd6+ Kc8 14.Qf8+ (31.722.999) 1890 

27/49  0:17   +15.83++ 1.Rxd7 (33.273.011) 1895 

27/49  0:17   +15.91++ 1.Rxd7 (33.590.399) 1896 

27/49  0:18   +16.02++ 1.Rxd7 (34.393.257) 1895 

27/49  0:18   +16.16++ 1.Rxd7 (35.352.139) 1899 

27/49  0:18   +16.35++ 1.Rxd7 (35.998.032) 1899 

27/49  0:19   +16.59++ 1.Rxd7 (37.217.790) 1905 

27/49  0:20   +16.88++ 1.Rxd7 (39.473.910) 1922 

27/49  0:21   +16.88   1.Rxd7 Bc5 2.Qf4 O-O 3.Bh6 Bxf2+ 
                       4.Qxf2 gxh6 5.Rcc7 Qxc7 6.Qg3+ Kh8 
                       7.Rxc7 Rbc8 8.Rxc8 Rxc8 9.Qf4 Kg7 
                       10.Qf6+ Kg8 11.Qxh6 Rc1+ 12.Qxc1 Kg7 
                       13.Qg5+ Kf8 14.Qh6+ (41.443.707) 1935 

28/40  0:22   +16.96++ 1.Rxd7 (44.167.125) 1938 

28/40  0:23   +17.03++ 1.Rxd7 (45.193.651) 1940 

28/40  0:23   +17.14++ 1.Rxd7 (46.300.302) 1945 

28/40  0:24   +17.29++ 1.Rxd7 (47.591.216) 1948 

28/40  0:25   +17.47++ 1.Rxd7 (49.534.655) 1954 

28/40  0:26   +17.71++ 1.Rxd7 (51.429.182) 1960 

28/42  0:28   +18.01++ 1.Rxd7 (56.254.624) 1982 

28/42  0:30   +16.81-- 1.Rxd7 f5 (60.188.190) 1987 

28/42  0:30   +17.59++ 1.Rxd7 (61.080.479) 1989 

28/42  0:31   +18.07++ 1.Rxd7 (62.243.269) 1992 

28/42  0:33   +18.66++ 1.Rxd7 (67.151.268) 2001 

28/42  0:36   +19.35++ 1.Rxd7 (74.392.597) 2013 

28/50  0:40   +19.55   1.Rxd7 Bc5 2.Qf4 f5 3.Rxg7 Rc8 
                       4.Rxb7 Rc7 5.Rb8+ Kd7 6.Rxh8 Kc6 
                       7.Bd8 Kb7 8.Rxh7 Bb6 9.Rcxc7+ Bxc7 
                       10.Rxc7+ Qxc7 11.Bxc7 Kxc7 12.Qxa4 f4 
                       13.Qxf4 Kb8 14.Qb4+ (81.481.074) 2026 

29/39  0:42   +19.62++ 1.Rxd7 (86.226.800) 2033 

29/39  0:43   +19.70++ 1.Rxd7 (88.477.943) 2036 

29/39  0:44   +19.80++ 1.Rxd7 (90.614.210) 2035 

29/39  0:45   +19.95++ 1.Rxd7 (92.791.540) 2036 

29/39  0:46   +20.14++ 1.Rxd7 (94.909.723) 2039 

29/39  0:48   +20.37++ 1.Rxd7 (100.069.811) 2046 

29/39  0:52   +20.67++ 1.Rxd7 (107.287.989) 2057 

29/39  0:55   +20.79   1.Rxd7 f5 2.Rdc7 Bxa3 3.Bd2 O-O 
                       4.Bxa5 Kh8 5.bxa3 Ra8 6.Bb4 Rfe8 
                       7.Rxb7 h6 8.Qh4 f4 9.Qxf4 Rg8 10.Qf6 Rae8 
                       11.Rcc7 Rd8 12.Qxe6 (114.278.639) 2058 

30/33  0:58   +20.87++ 1.Rxd7 (120.815.745) 2064 

30/33  1:01   +20.94++ 1.Rxd7 (126.322.487) 2070 

30/33  1:03   +21.05++ 1.Rxd7 (130.869.296) 2070 

30/33  1:06   +21.20++ 1.Rxd7 (137.944.741) 2077 

30/33  1:10   +21.38++ 1.Rxd7 (146.382.026) 2085 

30/34  1:17   +21.62++ 1.Rxd7 (161.402.648) 2090 

30/42  1:19   +20.72-- 1.Rxd7 f5 (166.704.012) 2092 

30/42  1:19   +21.32++ 1.Rxd7 (167.201.011) 2092 

30/42  1:22   +21.72++ 1.Rxd7 (172.722.796) 2098 

30/45  1:30   +22.22++ 1.Rxd7 (192.094.899) 2113 

30/45  1:45   +22.80++ 1.Rxd7 (225.489.040) 2130 

30/49  1:50   +22.45   1.Rxd7 f5 2.Rdc7 Bc5 3.R7xc5 O-O 
                       4.Rxa5 Rf7 5.Qxa4 b5 6.Rxb5 Rbf8 
                       7.Qa6 h6 8.Be3 d4 9.Bxd4 Re8 10.Qb6 Kh7 
                       11.Bc5 Kg6 12.Qc6 Ree7 13.Bxe7 Rxe7 
                       14.Rb7 (236.733.939) 2135 

31/35  1:55   +22.53++ 1.Rxd7 (246.151.522) 2140 

31/35  1:56   +22.60++ 1.Rxd7 (248.513.138) 2140 

31/35  1:57   +22.71++ 1.Rxd7 (251.786.870) 2139 

31/35  2:01   +22.86++ 1.Rxd7 (260.243.283) 2144 

31/35  2:05   +23.05++ 1.Rxd7 (270.575.440) 2147 

31/35  2:10   +23.28++ 1.Rxd7 (282.029.658) 2155 

31/35  2:17   +23.58++ 1.Rxd7 (296.375.816) 2163 

31/36  2:24   +23.94++ 1.Rxd7 (313.246.227) 2170 

31/36  2:35   +24.37++ 1.Rxd7 (339.125.841) 2183 

31/37  2:45   +24.89++ 1.Rxd7 (362.491.175) 2196 

31/37  2:58   +25.51++ 1.Rxd7 (395.181.141) 2210 

31/38  3:14   +26.25++ 1.Rxd7 (432.382.357) 2222 

31/44  3:37   +27.12++ 1.Rxd7 (486.183.530) 2239 

31/44  4:02   +28.15++ 1.Rxd7 (546.510.966) 2254 

31/44  4:28   +29.35++ 1.Rxd7 (609.325.342) 2270 

31/44  4:49   +30.75++ 1.Rxd7 (659.380.438) 2278 

31/44  5:12   +32.39++ 1.Rxd7 (712.815.028) 2283 

31/44  5:37   +34.29++ 1.Rxd7 (772.981.888) 2287 

31/44  5:54   +36.50++ 1.Rxd7 (811.517.138) 2291 

31/44  6:05   +39.07++ 1.Rxd7 (837.698.315) 2293 

31/44  6:11   +42.03++ 1.Rxd7 (851.157.038) 2293 

31/44  6:15   +45.47++ 1.Rxd7 (861.360.187) 2293 

31/44  6:16   +51.13++ 1.Rxd7 (862.804.392) 2293 

31/52  6:23   +55.74++ 1.Rxd7 (880.402.944) 2295 

31/52  6:29   +22.38-- 1.Rxd7 f5 (893.144.028) 2295 

31/52  6:29   +41.74++ 1.Rxd7 (894.706.267) 2295 

31/52  6:31   +47.85++ 1.Rxd7 (898.002.745) 2295 

31/52  6:32   +54.89++ 1.Rxd7 (900.577.315) 2295 

31/58  6:42   +63.01++ 1.Rxd7 (924.815.385) 2298 

31/58  6:47   +27.64   1.Rxd7 f5 2.Rdc7 Bc5 3.R7xc5 O-O 
                       4.Rxa5 h6 5.Qb6 Rfe8 6.Bd2 Kh8 
                       7.Rxa4 Re7 8.Rc7 Rxc7 9.Qxc7 Rg8 
                       10.Rh4 b5 11.Qf7 b4 12.Qxe6 Rb8 
                       13.Qxf5 Kg8 14.Qh7+ (937.169.948) 2297 

32/36  6:52   +27.72++ 1.Rxd7 (947.133.244) 2298 

32/36  6:53   +27.79++ 1.Rxd7 (949.687.421) 2297 

32/36  6:54   +27.90++ 1.Rxd7 (951.648.599) 2297 

32/36  6:55   +28.05++ 1.Rxd7 (954.706.899) 2297 

32/36  6:57   +28.23++ 1.Rxd7 (958.491.424) 2297 

32/36  6:58   +28.47++ 1.Rxd7 (961.550.693) 2298 

32/36  6:59   +28.77++ 1.Rxd7 (963.894.330) 2298 

32/36  7:00   +29.12++ 1.Rxd7 (967.312.237) 2298 

32/36  7:02   +29.56++ 1.Rxd7 (970.194.807) 2298 

32/36  7:03   +30.08++ 1.Rxd7 (973.451.930) 2298 

32/36  7:05   +30.70++ 1.Rxd7 (977.215.405) 2298 

32/36  7:06   +31.44++ 1.Rxd7 (979.591.221) 2298 

32/36  7:07   +32.31++ 1.Rxd7 (982.761.325) 2298 

32/36  7:09   +33.33++ 1.Rxd7 (986.263.656) 2298 

32/36  7:10   +34.53++ 1.Rxd7 (989.406.579) 2298 

32/36  7:11   +35.94++ 1.Rxd7 (992.285.254) 2299 

32/36  7:12   +37.57++ 1.Rxd7 (994.692.579) 2299 

32/36  7:13   +39.48++ 1.Rxd7 (997.627.693) 2298 

32/38  7:15   +41.69++ 1.Rxd7 (1.001.109.453) 2299 

32/38  7:16   +44.26++ 1.Rxd7 (1.003.586.422) 2299 

32/38  7:16   +52.30++ 1.Rxd7 (1.004.622.965) 2299 

32/38  7:17   +55.73++ 1.Rxd7 (1.005.485.659) 2299 

32/38  7:19   +59.77++ 1.Rxd7 (1.009.494.711) 2299 

32/40  7:31   +64.36++ 1.Rxd7 (1.038.659.825) 2300 

32/41  7:48   +69.65++ 1.Rxd7 (1.079.225.188) 2302 

32/41  8:02   +75.76++ 1.Rxd7 (1.110.604.185) 2303 

32/41  8:08   +84.31++ 1.Rxd7 (1.125.038.832) 2304 

32/41  8:09   +M38++   1.Rxd7 (1.127.580.515) 2304 

32/43  8:21   +64.38   1.Rxd7 f5 2.Rdc7 Bxa3 3.Bd2 Qxc7 
                       4.Rxc7 O-O 5.bxa3 h6 6.Qxa4 Rbc8 
                       7.Rxc8 Rxc8 8.Qd7 Rc6 9.Qxb7 Rc4 
                       10.Qe7 g5 11.Qxe6+ Kf8 12.Qxh6+ Ke8 
                       13.Bxg5 Rc1+ 14.Bxc1 (1.155.853.263) 2305 

33/42  8:43   +64.45++ 1.Rxd7 (1.207.711.412) 2307 

33/42  8:44   +64.59++ 1.Rxd7 (1.210.550.349) 2307 

33/42  8:44   +64.70++ 1.Rxd7 (1.211.363.443) 2307 

33/42  8:45   +64.84++ 1.Rxd7 (1.211.996.323) 2307 

33/42  8:45   +65.03++ 1.Rxd7 (1.212.892.802) 2307 

33/42  8:47   +65.28++ 1.Rxd7 (1.216.292.224) 2307 

33/42  8:47   +65.65++ 1.Rxd7 (1.217.999.112) 2307 

33/42  8:49   +66.00++ 1.Rxd7 (1.221.025.557) 2308 

33/42  8:50   +66.45++ 1.Rxd7 (1.224.138.204) 2308 

33/42  8:50   +66.99++ 1.Rxd7 (1.225.266.235) 2308 

33/42  8:52   +67.61++ 1.Rxd7 (1.230.666.888) 2309 

33/44  8:53   +68.35++ 1.Rxd7 (1.232.545.735) 2309 

33/44  8:55   +69.22++ 1.Rxd7 (1.236.366.635) 2309 

33/44  8:56   +70.27++ 1.Rxd7 (1.239.219.078) 2309 

33/44  8:57   +71.50++ 1.Rxd7 (1.242.513.195) 2310 

33/44  8:58   +72.94++ 1.Rxd7 (1.245.353.199) 2310 

33/44  9:00   +74.59++ 1.Rxd7 (1.248.202.057) 2310 

33/44  9:01   +62.96-- 1.Rxd7 f5 (1.250.370.714) 2310 

33/44  9:02   +70.76++ 1.Rxd7 (1.252.849.633) 2310 

33/44  9:02   +73.13++ 1.Rxd7 (1.253.069.386) 2310 

33/44  9:02   +75.69++ 1.Rxd7 (1.253.996.108) 2310 

33/44  9:03   +78.97++ 1.Rxd7 (1.256.383.600) 2310 

33/44  9:04   +85.23++ 1.Rxd7 (1.257.325.686) 2310 

33/44  9:04   +M39++   1.Rxd7 (1.257.599.164) 2310 

33/48  9:10   +60.73-- 1.Rxd7 f5 (1.271.522.056) 2310 

33/48  9:11   +M39++   1.Rxd7 (1.274.537.157) 2310 

33/48  9:14   +55.00-- 1.Rxd7 f5 (1.280.986.047) 2310 

33/48  9:16   +M38++   1.Rxd7 (1.287.116.091) 2310 

33/48  9:23   +M23     1.Rxd7 f5 2.Rdc7 Bxa3 3.Bd2 Qxc7 
                       4.Rxc7 O-O 5.bxa3 Rbc8 6.Rxc8 Rxc8 
                       7.Qb6 Re8 8.Qxb7 Kh8 9.Qd7 Ra8 
                       10.Qxe6 f4 11.Bb4 f3 12.Qf5 g6 
                       13.Qxf3 Kg7 14.Qf6+ (1.303.446.401) 2311 

34/40  9:24   +132.76--1.Rxd7 f5 (1.303.817.705) 2311 

34/40  9:26   +M23++   1.Rxd7 (1.309.842.494) 2310 

34/44  9:33   +M22     1.Rxd7 f5 2.Rdc7 Bxa3 3.Bd2 Qxc7 
                       4.Rxc7 O-O 5.bxa3 Rbc8 6.Rxc8 Rxc8 
                       7.Qb6 Re8 8.Qxb7 Kh8 9.Qd7 Ra8 
                       10.Bb4 Rg8 11.Qxe6 Rb8 12.Qxf5 g6 
                       13.Qf6+ Kg8 14.Qe6+ (1.326.244.915) 2311 

35/34  9:36   +M22     1.Rxd7 f5 2.Rdc7 Bxa3 3.Bd2 Qxc7 
                       4.Rxc7 O-O 5.bxa3 Rbc8 6.Rxc8 Rxc8 
                       7.Qb6 Re8 8.Qxb7 Kh8 9.Qd7 Ra8 
                       10.Qxe6 f4 11.Bb4 Rb8 12.Qf5 g6 
                       13.Qf6+ Kg8 14.Be7 (1.334.150.189) 2312 

36/33  9:42   +M22     1.Rxd7 f5 2.Rdc7 Bxa3 3.Bd2 Qxc7 
                       4.Rxc7 O-O 5.bxa3 Rbc8 6.Rxc8 Rxc8 
                       7.Qb6 Re8 8.Qxb7 Kh8 9.Qd7 Ra8 
                       10.Qxe6 f4 11.Bb4 Rb8 12.Qf5 g6 
                       13.Qf6+ Kg8 14.Be7 (1.346.833.623) 2313 

37/40  10:08  +75.25-- 1.Rxd7 Bc5 (1.410.116.420) 2319 

37/40  10:16  +M22++   1.Rxd7 (1.430.109.579) 2319 

37/40  10:46  +M21     1.Rxd7 Bc5 2.Qf4 O-O 3.Bh6 Bxf2+ 
                       4.Qxf2 Rbd8 5.Bxg7 Rxd7 6.Bf6 Qa7 
                       7.Qxa7 d4 8.Qc5 Re8 9.Qc2 Red8 
                       10.Bxh7+ Kf8 11.Qc8 b5 12.Bxd8 Kg7 
                       13.Qxd7 b4 14.axb4 (1.501.940.068) 2324 

38/40  11:06  +M15     1.Rxd7 f5 2.Rdc7 Bxa3 3.Qh4 O-O 
                       4.Rxg7+ Kxg7 5.Bf6+ Rxf6 6.Qxf6+ Kg8 
                       7.Qxe6+ Kf8 8.Qf6+ Kg8 9.Bxf5 Qb6 
                       10.Be6+ Qxe6 11.Qxe6+ Kh8 12.Qf6+ Kg8 
                       13.Rc7 Be7 14.Qxe7 (1.552.406.606) 2327 

39/32  11:35  +M14     1.Rxd7 f5 2.Rdc7 Bc5 3.R1xc5 Qxc7 
                       4.Rxc7 O-O 5.Bf6 Rf7 6.Rxf7 Kxf7 
                       7.Qxa4 Rg8 8.Qd7+ Kg6 9.Qxe6 gxf6 
                       10.Qxg8+ Kh6 11.exf6 b6 12.Qg7+ Kh5 
                       13.Be2+ Kh4 14.Qh6+ (1.618.760.451) 2329 

40/30  11:55  +M14     1.Rxd7 f6 2.Rdc7 fxg5 3.Qg4 Qxc7 
                       4.Rxc7 Kd8 5.Rf7 Rc8 6.Qxg5+ Ke8 
                       7.Rxb7 Rc5 8.Rb8+ Kf7 9.Qf4+ Ke7 
                       10.Qxa4 Rc1+ 11.Bf1 Rc8 12.Rxc8 Kf7 
                       13.Qe8+ Kg8 14.Qxf8+ (1.667.197.272) 2329 

41/28  12:18  +M14     1.Rxd7 Bc5 2.Qf4 O-O 3.Bh6 Bxf2+ 
                       4.Qxf2 b5 5.Bxg7 Qb6 6.Qxb6 Rxb6 
                       7.Bxf8 Rb8 8.Bh6 b4 9.Rcc7 bxa3 
                       10.Rxf7 axb2 11.Rg7+ Kh8 12.Rxh7+ Kg8 
                       13.Rcg7+ Kf8 14.Rh8+ (1.722.253.050) 2331 

42/28  12:33  +M14     1.Rxd7 Bc5 2.Qf4 O-O 3.Bh6 Bxf2+ 
                       4.Qxf2 b5 5.Bxg7 Qb6 6.Qxb6 Rxb6 
                       7.Bxf8 Rb8 8.Bh6 b4 9.Rcc7 bxa3 
                       10.Rxf7 axb2 11.Rg7+ Kh8 12.Rxh7+ Kg8 
                       13.Rcg7+ Kf8 14.Rh8+ (1.756.516.933) 2331 

43/28  12:52  +M14     1.Rxd7 Bc5 2.Qf4 O-O 3.Bh6 Bxf2+ 
                       4.Qxf2 Ra8 5.Bxg7 Qa7 6.Qxa7 Rxa7 
                       7.Bxf8 Ra8 8.Bb4 Kg7 9.Rcc7 Kh6 
                       10.Bd2+ Kg7 11.Rxf7+ Kg8 12.Rg7+ Kh8 
                       13.Rg3 Rf8 14.Rxh7+ (1.799.921.886) 2331 

44/28  13:07  +M14     1.Rxd7 Bc5 2.Qf4 O-O 3.Bh6 Bxf2+ 
                       4.Qxf2 Ra8 5.Bxg7 Qa7 6.Qxa7 Rxa7 
                       7.Bxf8 Ra8 8.Bb4 Kg7 9.Rcc7 Kh6 
                       10.Bd2+ Kg7 11.Rxf7+ Kg8 12.Rg7+ Kh8 
                       13.Rg3 d4 14.Rxh7+ (1.835.603.514) 2331 

45/28  13:34  +M14     1.Rxd7 Bc5 2.Qf4 O-O 3.Bh6 Bxf2+ 
                       4.Qxf2 Ra8 5.Bxg7 Qa7 6.Qxa7 Rxa7 
                       7.Bxf8 Ra8 8.Bb4 Kg7 9.Rcc7 Kh6 
                       10.Bd2+ Kg7 11.Rxf7+ Kg8 12.Rg7+ Kh8 
                       13.Rg3 d4 14.Rxh7+ (1.899.778.565) 2331 

46/28  14:03  +M14     1.Rxd7 Bc5 2.Qf4 O-O 3.Bh6 Bxf2+ 
                       4.Qxf2 Ra8 5.Bxg7 Qa7 6.Qxa7 Rxa7 
                       7.Bxf8 Ra8 8.Bb4 Kg7 9.Rcc7 Kh6 
                       10.Bd2+ Kg7 11.Rxf7+ Kg8 12.Rg7+ Kh8 
                       13.Rg3 d4 14.Rxh7+ (1.966.618.070) 2332 

47/28  14:58  +M13     1.Rxd7 Bc5 2.Qf4 O-O 3.Bh6 Bxf2+ 
                       4.Qxf2 Ra8 5.Bxg7 Qa7 6.Qxa7 Rxa7 
                       7.Bxf8 Ra8 8.Bh6 b6 9.Rcc7 d4 
                       10.Rxf7 Rd8 11.Rxh7 Re8 12.Rcg7+ Kf8 
                       13.Rg3+ (2.098.281.744) 2335 

48/26  15:33  +M13     1.Rxd7 Bc5 2.Qf4 O-O 3.Bh6 Bxf2+ 
                       4.Qxf2 Ra8 5.Bxg7 Qa7 6.Qxa7 Rxa7 
                       7.Bxf8 Ra8 8.Bh6 b6 9.Rcc7 d4 
                       10.Rxf7 Rd8 11.Rxh7 Re8 12.Rcg7+ Kf8 
                       13.Rg3+ (2.180.879.084) 2336 
                       
49/26  16:12  +M13     1.Rxd7 Bc5 2.Qf4 O-O 3.Bh6 Bxf2+ 
                       4.Qxf2 Ra8 5.Bxg7 Qa7 6.Qxa7 Rxa7 
                       7.Bxf8 Ra8 8.Bh6 b6 9.Rcc7 d4 
                       10.Rxf7 Rd8 11.Rxh7 Re8 12.Rcg7+ Kf8 
                       13.Rg3+ (2.272.796.239) 2337 

50/26  17:12  +M13     1.Rxd7 Bc5 2.Qf4 O-O 3.Bh6 Bd4 
                       4.Bxg7 Rbc8 5.Bh6 Rxc1+ 6.Qxc1 Kh8 
                       7.Bxf8 Bb6 8.Bg7+ Kxg7 9.Qg5+ Kf8 
                       10.Qe7+ Kg7 11.Qf6+ Kg8 12.Qxf7+ Kh8 
                       13.Qxh7+ (2.417.767.030) 2340
Debugging is twice as hard as writing the code in the first
place. Therefore, if you write the code as cleverly as possible, you
are, by definition, not smart enough to debug it.
-- Brian W. Kernighan
Top
Uri Blass
Posts: 10787
Joined: Thu Mar 09, 2006 12:37 am
Location: Tel-Aviv Israel

Re: Test the combinational vision of your engine

Post by Uri Blass »

houdini3 search for mate in 13 can find Rxd7 with mate in 13

Houdini_3_x64:
4/10 00:00 1k 1,149k +2.96 1.Qf4 Be7 2.Bxe7 Kxe7 3.Qg5+ Ke8 4.Qxg7
5/15 00:00 2k 398k +2.96 1.Qf4 Be7 2.Bxe7 Kxe7 3.Qg5+ Ke8 4.Qxg7
6/19 00:00 3k 470k +3.14 1.Qf4 Be7 2.Bxe7 Kxe7 3.Qg5+ Ke8 4.Qxg7 Rf8 5.Qxh7 Qd2
7/19 00:00 4k 626k +3.04 1.Qf4 Be7 2.Bxe7 Kxe7 3.Qg5+ Ke8 4.Qxg7 Rf8 5.Qxh7 Bc6
8/19 00:00 6k 747k +2.93 1.Qf4 Be7 2.Bxe7 Kxe7 3.Qg5+ Ke8 4.Qxg7 Rf8 5.Qg5 h5
9/19+ 00:00 9k 826k +3.06 1.Qf4
9/19+ 00:00 10k 880k +3.32 1.Qf4
9/19+ 00:00 10k 940k +3.89 1.Qf4
9/19+ 00:00 12k 891k +5.46 1.Qf4
9/27 00:00 40k 1,499k +6.22 1.Qf4 Bxa3 2.bxa3 Rf8 3.Bxh7 Qb5 4.Bc2 Rh8 5.Rb1 Qa6
10/27+ 00:00 52k 1,360k +6.47 1.Qf4
10/27+ 00:00 62k 1,476k +6.98 1.Qf4
10/27 00:00 74k 1,476k +6.60 1.Qf4 Bxa3 2.bxa3 Rf8 3.Bxh7 Qb5 4.Bc2 b6 5.h3 Rh8 6.Rb1 Qa6 7.Qb4
11/27+ 00:00 116k 1,684k +6.87 1.Qf4
11/27+ 00:00 152k 1,811k +7.42 1.Qf4
11/27+ 00:00 286k 2,186k +8.91 1.Qf4
11/27 00:00 599k 2,771k +9.36 1.Qf4 Bc5 2.R1xc5 Qe1+ 3.Bf1 0-0 4.Rxd7 Qb1 5.Rcc7 Qg6 6.Bh4 h6 7.g3 b6 8.Ra7
12/27 00:00 659k 2,791k +9.34 1.Qf4 Bc5 2.R1xc5 Qe1+ 3.Bf1 0-0 4.Rxd7 Qb1 5.Rcc7 Qg6 6.Bh4 h6 7.h3 Kh7 8.Rxb7 Rxb7 9.Rxb7 Kg8 10.Qxa4 Qf5
13/27+ 00:00 970k 2,993k +9.73 1.Qf4
13/27 00:00 1,131k 3,098k +10.06 1.Qf4 Bc5 2.R1xc5 Qe1+ 3.Bf1 0-0 4.Rxd7 Qe4 5.Qxe4 dxe4 6.Rcc7 b6 7.Be3 Ra8 8.Bxb6 Rab8 9.Be3 Rxb2 10.Bc5 Rfb8 11.Rxf7
14/27 00:00 1,374k 3,217k +10.18 1.Qf4 Bc5 2.R1xc5 Qe1+ 3.Bf1 0-0 4.Rxd7 Qe4 5.Qxe4 dxe4 6.Rcc7 b6 7.Be3 Rbd8 8.Bb5 Rxd7 9.Rxd7 Rb8 10.Bc6 h6 11.Rc7 Kf8 12.Bxe4
15/27 00:00 1,945k 3,480k +10.40 1.Qf4 Bc5 2.R1xc5 Qe1+ 3.Bf1 0-0 4.Rxd7 Qe4 5.Qxe4 dxe4 6.Rcc7 h6 7.Be3 Rbd8 8.Bb5 Rxd7 9.Rxd7 Ra8 10.Rxb7 Ra5 11.Be8 Rxe5 12.Bxf7+ Kh7 13.Ra7 Rf5
16/27 00:00 2,710k 3,711k +10.40 1.Qf4 Bc5 2.R1xc5 Qe1+ 3.Bf1 0-0 4.Rxd7 Qe4 5.Qxe4 dxe4 6.Rcc7 h6 7.Be3 Rbd8 8.Bb5 Rxd7 9.Rxd7 Ra8 10.Rxb7 Ra5 11.Be8 Rxe5 12.Bxf7+ Kh7 13.Ra7 Rf5
17/27 00:01 4,234k 3,990k +10.40 1.Qf4 Bc5 2.R1xc5 Qe1+ 3.Bf1 0-0 4.Rxd7 Qe4 5.Qxe4 dxe4 6.Rcc7 h6 7.Be3 Rbd8 8.Bb5 Rxd7 9.Rxd7 Ra8 10.Rxb7 Ra5 11.Be8 Rxe5 12.Bxf7+ Kh7 13.Ra7 Rf5
17/27+ 00:01 7,552k 4,308k +10.83 1.Rxd7
17/27 00:02 10,345k 4,379k +11.39 1.Rxd7 Bc5 2.Rxc5 Qe1+ 3.Bf1 0-0 4.Be7 b6 5.Rcc7 Rfc8 6.Bb4 Qe4 7.Qc3 Rf8 8.Bxf8 Rxf8 9.Qe3 Qxe3 10.fxe3 h6 11.Bb5 g6 12.Bxa4 Kg7 13.Bd1 Rc8
18/27 00:02 12,145k 4,438k +11.30 1.Rxd7 Bc5 2.Rxc5 Qe1+ 3.Bf1 0-0 4.Be7 b6 5.Rcc7 Rfc8 6.Bb4 Qe4 7.Qc3 Rf8 8.Bxf8 Rxf8 9.Qe3 Qxe3 10.fxe3 h6 11.Bb5 h5 12.Kf2 Kh7 13.Bxa4 Ra8
19/27 00:03 15,990k 4,560k +11.10 1.Rxd7 Bc5 2.Rxc5 Qe1+ 3.Bf1 0-0 4.Be7 b6 5.Rcc7 Rfc8 6.Bb4 Qe4 7.Qc3 Rf8 8.Bxf8 Rxf8 9.Qb4 Qxb4 10.axb4 g6 11.Rb7 Kg7 12.Rxb6 Re8 13.b5 Rb8
20/27 00:05 24,973k 4,764k +11.10 1.Rxd7 Bc5 2.Rxc5 Qe1+ 3.Bf1 0-0 4.Be7 b6 5.Rcc7 Rfc8 6.Bb4 Qe4 7.Qc3 Rf8 8.Bxf8 Rxf8 9.Qb4 Qxb4 10.axb4 g6 11.Rb7 Kg7 12.Rxb6 Re8 13.b5 Rb8
21/27 00:08 43,282k 4,934k +11.19 1.Rxd7 Bc5 2.Rxc5 Qe1+ 3.Bf1 0-0 4.Be7 b6 5.Rcc7 Rfc8 6.Bd6 Qe4 7.Qc3 Rf8 8.Ra7 Rbe8 9.Qb4 Qxb4 10.Bxb4 h6 11.Bxf8 Rxf8 12.Bb5 Kh7 13.Bxa4 Rc8
22/27+ 00:15 75,481k 4,970k +11.65 1.Rxd7
22/27+ 00:36 190,987k 5,287k +12.58 1.Rxd7
22/27+ 00:57 300,826k 5,244k +15.22 1.Rxd7
22/27 02:30 828,935k 5,513k +19.16 1.Rxd7 Rc8 2.Rcc7 f5 3.exf6 Rxc7 4.fxg7 Rc1+ 5.Bxc1 Rg8 6.gxf8Q+ Rxf8 7.Rxb7 Qe1+ 8.Bf1 Qxf2+ 9.Qxf2 Rxf2 10.Kxf2 h5 11.Bb5+ Kd8 12.Bxa4 Kc8 13.Bc6 d4
23/27 02:52 958,145k 5,558k +19.16 1.Rxd7 Rc8 2.Rcc7 f5 3.exf6 Rxc7 4.fxg7 Rc1+ 5.Bxc1 Rg8 6.gxf8Q+ Rxf8 7.Rxb7 Qe1+ 8.Bf1 Qxf2+ 9.Qxf2 Rxf2 10.Kxf2 h5 11.Bb5+ Kd8 12.Bxa4 Kc8 13.Bc6 d4
24/27 03:01 1,005,948k 5,535k +19.16 1.Rxd7 Rc8 2.Rcc7 f5 3.exf6 Rxc7 4.fxg7 Rc1+ 5.Bxc1 Rg8 6.gxf8Q+ Rxf8 7.Rxb7 Qe1+ 8.Bf1 Qxf2+ 9.Qxf2 Rxf2 10.Kxf2 h5 11.Bb5+ Kd8 12.Bxa4 Kc8 13.Bc6 d4
25/27 03:40 1,226,199k 5,553k +19.16 1.Rxd7 Rc8 2.Rcc7 f5 3.exf6 Rxc7 4.fxg7 Rc1+ 5.Bxc1 Rg8 6.gxf8Q+ Rxf8 7.Rxb7 Qe1+ 8.Bf1 Qxf2+ 9.Qxf2 Rxf2 10.Kxf2 h5 11.Bb5+ Kd8 12.Bxa4 Kc8 13.Bc6 d4
26/27+ 05:35 1,699,696k 5,058k +19.96 1.Rxd7
26/27+ 08:41 2,280,367k 4,374k +21.55 1.Rxd7
26/27+ 18:43 4,480,971k 3,987k +26.17 1.Rxd7
26/27 26:46 7,314,106k 4,552k +M14 1.Rxd7 Bc5 2.Qf4 0-0 3.Bf6 Bxf2+ 4.Kxf2 h6 5.Bxg7 Qb6+ 6.Ke2 Qxb2+ 7.Rc2 Qxc2+ 8.Bxc2 Rbc8 9.Bxf8 Rxc2+ 10.Kd3 Rf2 11.Qxf2 f5 12.Qg3+ Kxf8 13.Qg7+ Ke8
27/27 27:12 7,490,442k 4,588k +M13 1.Rxd7 Bc5 2.Qf4 0-0 3.Bf6 Bxf2+ 4.Kxf2 h6 5.Bxg7 Qb6+ 6.Kg3 Kxg7 7.Qf6+ Kg8 8.Qxh6 Qe3+ 9.Qxe3 f6 10.Qh6 Rf7 11.Qg6+ Kh8 12.Rxf7 fxe5 13.Qg7+
28/27 27:30 7,612,846k 4,612k +M13 1.Rxd7 Bc5 2.Qf4 0-0 3.Bf6 Bxf2+ 4.Kxf2 h6 5.Bxg7 Qb6+ 6.Kg3 Kxg7 7.Qf6+ Kg8 8.Qxh6 Qe3+ 9.Qxe3 f6 10.Qh6 Rf7 11.Qg6+ Kh8 12.Rxf7 fxe5 13.Qg7+
29/27 28:15 7,952,325k 4,690k +M13 1.Rxd7 Bc5 2.Qf4 0-0 3.Bf6 Bxf2+ 4.Kxf2 Qb6+ 5.Ke2 Qxb2+ 6.Rc2 Qxc2+ 7.Bxc2 Rbc8 8.Bb1 gxf6 9.exf6 Rc2+ 10.Bxc2 Rc8 11.Qg3+ Kf8 12.Qg7+ Ke8 13.Qxf7+
30/27 29:28 8,541,568k 4,828k +M13 1.Rxd7 Bc5 2.Qf4 0-0 3.Bf6 Bxf2+ 4.Kxf2 Qb6+ 5.Ke2 Qxb2+ 6.Rc2 Qxc2+ 7.Bxc2 Rbc8 8.Bb1 gxf6 9.exf6 Rc2+ 10.Bxc2 Rc8 11.Qg3+ Kf8 12.Qg7+ Ke8 13.Qxf7+
31/27 31:17 9,404,748k 5,008k +M13 1.Rxd7 Bc5 2.Qf4 0-0 3.Bf6 Bxf2+ 4.Kxf2 Qb6+ 5.Ke2 Qxb2+ 6.Rc2 Qxc2+ 7.Bxc2 Rbc8 8.Bb1 gxf6 9.exf6 Rc2+ 10.Bxc2 Rc8 11.Qg3+ Kf8 12.Qg7+ Ke8 13.Qxf7+
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Dann Corbit
Posts: 12777
Joined: Wed Mar 08, 2006 8:57 pm
Location: Redmond, WA USA

Re: Test the combinational vision of your engine

Post by Dann Corbit »

This is with the current code, using SF:

Code: Select all

F:\project\dcorbit\Stockfish-master\src>tail -1000 SearchLog.txt

Searching: 1r2kb1r/1pRb1ppp/4p3/q2pP1B1/p2Q4/P2B4/1P3PPP/2R3K1 w k - 0 1
infinite: 0 time: 0 increment: 0 moves to go: 0

 1   +4.28   00:00    5720  Qf4
 2   +8.06   00:00   36171  Qf4 Bxa3 bxa3 O-O
 3   +8.51   00:00   63631  Qf4 Bxa3 Rxd7 O-O
 4   +8.54   00:00   84041  Qf4 Bxa3 Rxd7 O-O
 5   +8.60   00:00  106451  Qf4 Bxa3 Rxd7 O-O bxa3
 6   +8.36   00:00  128198  Qf4 Bxa3 Rxd7 O-O bxa3 Qb6
 7   +8.82   00:00  161319  Qf4 Bxa3 Rxd7 O-O bxa3 Ra8 Be7
 8   +8.87   00:00  187035  Qf4 Bc5 R1xc5 Qe1+ Bf1 Rf8 Rc1 Qe4 Qxe4 dxe4
 9   +8.50   00:00  220065  Qf4 Bc5 R1xc5 Qb6 Rxd7 O-O Be7 Rfe8 Bd6
10   +9.07   00:00  259128  Qf4 Bc5 R1xc5 Qe1+ Bf1 Qe4 Qxe4 dxe4 Rxd7 f6 Rxg7 fxg5 Bb5+ Kd8
11   +9.23   00:00  303365  Qf4 Bxa3 Rxd7 O-O bxa3 b6 Be7 h6 Bb4 Qa8 Bxf8 Rxf8
12   +9.33   00:00  367690  Qf4 Bc5 R1xc5 Qe1+ Bf1 Qe4 Qxe4 dxe4 Rxd7 O-O Bb5 f6 exf6 gxf6 Bc1
13   +9.52   00:00  494202  Qf4 Bc5 R1xc5 Qe1+ Bf1 Qe4 Qxe4 dxe4 Rxd7 O-O Be7 b6 Bxf8 bxc5 Bxc5 g6 Bd4 Rc8 Re7
14   +9.61   00:00  943917  Qf4 Bc5 R1xc5 Qe1+ Bf1 O-O Rxd7 Qe4 Qxe4 dxe4 Be7 Rfe8 Rc4 b5 Rb4 Rec8 Rxb5 Rxb5 Bxb5 Rc1+ Bf1
15   +9.83   00:00   1423K  Qf4 Bd6 Rxd7 O-O exd6 Qb6 Rcc7 Qxb2 Rxf7 Rxf7 Qxf7+ Kh8 Qxe6 Rf8 Be3 Qb3 Qd7
16  +10.38   00:00   2255K  Qf4 Bc5 R1xc5 Qe1+ Bf1 O-O Rxd7 Qe4 Qxe4 dxe4 Be7 Rfc8 Rxb7 h6 Rb4 Re8 Rcc4 Rxb4 Bxb4 e3 fxe3 g6 Rc7 h5 Bb5 Ra8
17  +10.50   00:00   3010K  Qf4 Bc5 R1xc5 Qe1+ Bf1 Qe4 Qxe4 dxe4 Rxd7 O-O Be7 Rfc8 Rxb7 h6 Rb4 f5 exf6 Kf7 Rxe4 gxf6 Rxc8 Rxc8 Bb4 f5 Rf4 Rc2 Bc3
18  +10.53   00:00   3508K  Qf4 Bc5 R1xc5 Qe1+ Bf1 O-O Rxd7 Qe4 Qxe4 dxe4 Be7 Rfc8 Rxb7 Ra8 Rxc8+ Rxc8 Ra7 h6 Rxa4 Rc2 Rb4 Rc7 Bd6 Rc2 f3 f5 Bc4
19  +11.11   00:00   9084K  Qf4 Bc5 R1xc5 Qe1+ Bf1 O-O Rxd7 Qe4 Qxe4 dxe4 Rc4 Rfc8 Rxa4 Rc2 Rxb7 Rcc8 Rxb8 Rxb8 Rc4 h5 Bc1 e3 fxe3 Rd8 Kf2 Rd5 Rc8+ Kh7 Rc7
20  +11.31   00:01  14281K  Qf4 Bc5 R1xc5 Qe1+ Bf1 Qe4 Qxe4 dxe4 Rxd7 O-O Rc4 b6 Rxe4 Ra8 Be7 Rfe8 Rf4 Ra5 Bd6 f5 exf6 gxf6 Rb7 Rh5 Rxf6 Rg5 Bc4
21  +11.37   00:01  20210K  Rxd7 Bc5 Rxc5 Qe1+ Bf1 O-O Qf4 Qe4 Qxe4 dxe4 Rc4 e3 fxe3 Ra8 Rf4 Ra7 Be7 Rfa8 Bd6 b5 Rfxf7 Rxd7 Rxd7 Rc8 Bxb5 Rc1+ Bf1 g6 Rb7 Re1
22  +11.49   00:01  25818K  Rxd7 Bc5 Rxc5 Qe1+ Bf1 O-O Rc1 Qe4 Qxe4 dxe4 Rc4 Ra8 Rxe4 Ra5 Be7 Rfa8 Bd6 b5 Rf4 R5a7 Rfxf7 Rxd7 Rxd7 Rc8 Rb7 Rc1 Rxb5 Kf7 Rb7+ Kg8 Rd7
23  +11.62   00:02  37812K  Qf4 Bc5 R1xc5 Qe1+ Bf1 O-O Rxd7 Qe4 Qxe4 dxe4 Rc4 h6 Be7 Rfc8 Rxe4 g5 Rxa4 b6 Rb4 Rc1 f4 g4 Rd8+ Rxd8 Bxd8 h5 g3 b5 Rxb5 Re1 Bf6 Re3 Bg2
24  +11.71   00:04  62483K  Rxd7 Bc5 Rxc5 Qe1+ Bf1 O-O Qf4 Qe4 Qxe4 dxe4 Rc4 Rfc8 Rxe4 h6 Be7 g5 Rxa4 Rc1 f4 g4 Ra7 Rbc8 Raxb7 R8c4 g3 Ra1 Rdc7 Rxc7 Rxc7 Rd1 Rc8+ Kg7 Bf6+ Kg6 Rg8+ Kh5 Rg7
25  +19.29   00:17 228052K  Rxd7 f5 Rdc7 Bc5 R7xc5 b5 Bxb5+ Kf7 Be8+ Rhxe8 Rxa5 Kg6 Be3 Rb7 Qxa4 Kf7 Ra7 Ree7 Rxb7 Rxb7 Bc5 d4 Bxd4 g5 Qa6
26  +26.52   00:46 606504K  Rxd7 f5 Rdc7 Bc5 R7xc5 O-O Rxa5 h6 Qb6 Rfe8 Bd2 Kh8 Rxa4 Rbd8 Bb5 Rg8 Qxe6 Rdf8 Rc7 b6 Bd3 b5 Bxb5 Rb8 Qxf5 Rbf8 Qd7 h5 Qxd5 Rc8
27  +39.16   01:06 890412K  Rxd7 f5 Rdc7 Bc5 R7xc5 Qe1+ Rxe1 O-O Rc7 Ra8 Qb4 Rac8 Rxc8 Rxc8 Qxa4 Rc6 Qa8+ Kf7 Qxb7+ Kg6 Qxc6 Kxg5 Qxe6 g6 Qxd5 Kf4 e6 Kg4 e7
28     #16   01:24   1113M  Rxd7 Bd6 exd6 O-O Bh6 gxh6 Qg4+ Kh8 Qf4 Kg7 Qe5+ Kg8 Rcc7 Qxc7 dxc7 Rbc8 Qf6 Rxc7 Qxh6 Rc1+ Qxc1 Rc8 Qg5+ Kf8 Qe7+ Kg7 Qxf7+ Kh6 Qf4+ Kh5 Rxh7+
29     #16   01:27   1160M  Rxd7 Bc5 Qf4 O-O Bh6 Bd4 Qxd4 Rbc8 Rxc8 Rxc8 Qf4 Qe1+ Bf1 Rf8 Qg5 Qxe5 Qxe5 gxh6 Rxb7 h5 Bd3 h6 Bg6 h4 Qf6 h5 Bxf7+ Rxf7 Qxf7+ Kh8 Qh7+
30     #16   01:28   1167M  Rxd7 Bc5 Qf4 O-O Bh6 Bd4 Qxd4 Rbc8 Rxc8 Rxc8 Qf4 Qe1+ Bf1 Rf8 Qg5 Qxe5 Qxe5 gxh6 Rxb7 h5 Bd3 h6 Bg6 h4 Qf6 h5 Bxf7+ Rxf7 Qxf7+ Kh8 Qh7+
31     #16   01:32   1215M  Rxd7 Bc5 Qf4 O-O Bh6 Bd4 Qxd4 Rbc8 Rxc8 Rxc8 Qf4 Qe1+ Bf1 Rf8 Qg5 Qxe5 Qxe5 gxh6 Rxb7 h5 Bd3 h6 Bg6 h4 Qf6 h5 Bxf7+ Rxf7 Qxf7+ Kh8 Qh7+
32     #15   01:39   1310M  Rxd7 Bc5 Qf4 O-O Bh6 Bd4 Qxd4 Rbc8 Rxc8 Rxc8 Qf4 Qe1+ Bf1 Rf8 Qg5 Qxe5 Qxe5 gxh6 Rxb7 h5 Qg5+ Kh8 Qh6 Kg8 Bd3 Rc8 Qxh7+ Kf8 Qxf7+
33     #15   01:51   1465M  Rxd7 f5 Rdc7 Bc5 R7xc5 Qe1+ Rxe1 O-O Rc7 Rf7 Rxf7 Kxf7 Qxa4 b5 Qa7+ Kg6 Qe7 Re8 Qxe8+ Kxg5 Qe7+ Kh5 Qxg7 f4 Be2+ f3 Bxf3+ Kh4 Qh6+
34     #13   02:19   1840M  Rxd7 f6 Rdc7 fxg5 Qg4 Qxc7 Rxc7 Kd8 Rf7 Rc8 Qxg5+ Ke8 Rxb7 Rc5 Qh5+ g6 Qg5 Rc1+ Qxc1 Bc5 Qxc5 Kd8 Qe7+ Kc8 Qd7+
35     #13   02:28   1956M  Rxd7 f6 Rdc7 fxg5 Qg4 Qxc7 Rxc7 Kd8 Rf7 Rc8 Qxg5+ Ke8 Rxb7 Rc5 Qh5+ g6 Qg5 Rc1+ Qxc1 Bc5 Qxc5 Kd8 Qe7+ Kc8 Qd7+
36     #13   02:28   1958M  Rxd7 Bc5 Qf4 O-O Bh6 Bd4 Bxg7 Rbc8 Bh6 Rxc1+ Qxc1 Kh8 Bxf8 Bb6 Bg7+ Kxg7 Qg5+ Kf8 Qe7+ Kg7 Qxf7+ Kh6 Qf4+ Kh5 Rxh7+
Nodes: 1958873477
Nodes/second: 13162349
Best move: Rxd7
Ponder move: Bc5
Taking ideas is not a vice, it is a virtue. We have another word for this. It is called learning.
But sharing ideas is an even greater virtue. We have another word for this. It is called teaching.
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zullil
Posts: 6442
Joined: Tue Jan 09, 2007 12:31 am
Location: PA USA
Full name: Louis Zulli

Re: Test the combinational vision of your engine

Post by zullil »

Uri Blass wrote: ↑Mon Oct 15, 2018 7:12 pm Stockfish cannot find Rxd7 Kxd7 Qa7 and also suggest Qf4 that suggest a very poor combinational vision by stockfish.
I believe that Rxd7 mates faster but I am not sure.

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1r2kb1r/1pRb1ppp/4p3/q2pP1B1/p2Q4/P2B4/1P3PPP/2R3K1 w k - 1 1
Here is an informative snippet from a search by Stockfish-dev.

It seems what happens is that Qf4 is recognized quickly as being winning, while Rxd7 ends up near the end of the movelist. Then, because of late move reductions I assume, it takes a long time for Stockfish to ultimately see that Rxd7 leads to a shorter mate.

Should add that I don't see this as a significant problem with Stockfish.

info depth 48 currmove c7d7 currmovenumber 56
info depth 48 currmove d4a4 currmovenumber 57
info depth 48 currmove d3h7 currmovenumber 58
info depth 48 currmove d4d5 currmovenumber 59
info depth 48 currmove c7b7 currmovenumber 60
info depth 48 seldepth 34 multipv 1 score mate 17 nodes 12214384265 nps 41280152 hashfull 981 tbhits 0 time 295890 pv d4f4 f8e7 g5e7 d7c6 e7d6 a5c7 d6c7 b8c8 c7d6 c8d8 c1c6 b7c6 d6c5 d5d4 f4g5 d8d7 g5g7 d7d5 g7h8 e8d7 h8f8 d5c5 f8c5 f7f5 e5f6 d7c7 f6f7 c7b7 f7f8q e6e5 f8g7 b7c8 c5f8
info depth 49 currmove d4f4 currmovenumber 1
info depth 49 currmove d3g6 currmovenumber 2
info depth 49 currmove c1c6 currmovenumber 3
info depth 49 currmove d3b5 currmovenumber 4
info depth 49 currmove d4c5 currmovenumber 5
info depth 49 currmove d3f1 currmovenumber 6
info depth 49 currmove g1h1 currmovenumber 7
info depth 49 currmove d4b6 currmovenumber 8
info depth 49 currmove g2g4 currmovenumber 9
info depth 49 currmove g5e7 currmovenumber 10
info depth 49 currmove b2b4 currmovenumber 11
info depth 49 currmove f2f3 currmovenumber 12
info depth 49 currmove c7c3 currmovenumber 13
info depth 49 currmove d4a7 currmovenumber 14
info depth 49 currmove c1c4 currmovenumber 15
info depth 49 currmove d4g4 currmovenumber 16
info depth 49 currmove c1f1 currmovenumber 17
info depth 49 currmove h2h4 currmovenumber 18
info depth 49 currmove d4c3 currmovenumber 19
info depth 49 currmove c1b1 currmovenumber 20
info depth 49 currmove c1a1 currmovenumber 21
info depth 49 currmove d3e4 currmovenumber 22
info depth 49 currmove h2h3 currmovenumber 23
info depth 49 currmove d3e2 currmovenumber 24
info depth 49 currmove c7c2 currmovenumber 25
info depth 49 currmove c1c2 currmovenumber 26
info depth 49 currmove d4c4 currmovenumber 27
info depth 49 currmove c7c4 currmovenumber 28
info depth 49 currmove g5d8 currmovenumber 29
info depth 49 currmove g2g3 currmovenumber 30
info depth 49 currmove g5d2 currmovenumber 31
info depth 49 currmove d4h4 currmovenumber 32
info depth 49 currmove f2f4 currmovenumber 33
info depth 49 currmove g5e3 currmovenumber 34
info depth 49 currmove c7c6 currmovenumber 35
info depth 49 currmove c1e1 currmovenumber 36
info depth 49 currmove g1f1 currmovenumber 37
info depth 49 currmove c1d1 currmovenumber 38
info depth 49 currmove d3f5 currmovenumber 39
info depth 49 currmove d4e3 currmovenumber 40
info depth 49 currmove d4e4 currmovenumber 41
info depth 49 currmove b2b3 currmovenumber 42
info depth 49 currmove d4b4 currmovenumber 43
info depth 49 currmove g5f4 currmovenumber 44
info depth 49 currmove c7c8 currmovenumber 45
info depth 49 currmove c1c5 currmovenumber 46
info depth 49 currmove c1c3 currmovenumber 47
info depth 49 currmove c7c5 currmovenumber 48
info depth 49 currmove g5h6 currmovenumber 49
info depth 49 currmove g5f6 currmovenumber 50
info depth 49 currmove d3c4 currmovenumber 51
info depth 49 currmove d3a6 currmovenumber 52
info depth 49 currmove d3c2 currmovenumber 53
info depth 49 currmove g5h4 currmovenumber 54
info depth 49 currmove d3b1 currmovenumber 55
info depth 49 currmove c7d7 currmovenumber 56
info depth 49 currmove d4a4 currmovenumber 57
info depth 49 currmove c7b7 currmovenumber 58
info depth 49 currmove d4d5 currmovenumber 59
info depth 49 currmove d3h7 currmovenumber 60
info depth 49 seldepth 34 multipv 1 score mate 13 nodes 17663038216 nps 41617865 hashfull 999 tbhits 0 time 424410 pv c7d7 f7f6 d7c7 f6g5 d4g4 a5c7 c1c7 e8d8 c7f7 b8c8 g4g5 d8e8 f7b7 c8c5 g5h5 g7g6 h5g5 f8d6 e5d6 c5c1 g5c1 e8d8 c1c7 d8e8 c7e7
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MikeGL
Posts: 1010
Joined: Thu Sep 01, 2011 2:49 pm

Re: Test the combinational vision of your engine

Post by MikeGL »

I checked with many engines and it seems both moves are almost having equal eval due to
Qf4 move having the possibility to transpose with Rxd7! on its next move too.
The Qf4 PV actually shows Rxd7 on its next move.
I told my wife that a husband is like a fine wine; he gets better with age. The next day, she locked me in the cellar.
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User avatar
yurikvelo
Posts: 710
Joined: Sat Dec 06, 2014 1:53 pm

Re: Test the combinational vision of your engine

Post by yurikvelo »

Stockfish-2018.09.04

Code: Select all

D=32, 276 MN
+16.95	1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0
+13.69	1.Rxd7 Bc5 2.Rxc5 Qe1+ 3.Bf1 0-0 4.Be7 b6

D=33, 1 449 MN
+62.95	1.Rxd7 f6 2.exf6 Kxd7 3.fxg7 Rg8 4.Qf4 Rxg7
+16.95	1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0

D=34, 1 649 MN
+65.10	1.Rxd7 f6 2.exf6 Kxd7 3.fxg7 Rg8 4.Qf4 Rxg7
+17.04	1.Qf4 Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 0-0
1.Rxd7 Bc5, clean run

Code: Select all

D=22, 11.9 MN (Clean run)
+12.76	2.Rxc5 Qe1+ 3.Bf1 0-0 4.Be7 b6 5.Rc3 Rfc8
+10.87	2.Qxc5 Qxc5 3.Rxc5 0-0 4.Rcc7 b6 5.Be3 Rbd8

D=23, 34.1 MN
+22.95	2.Qf4 f5 3.Rxg7 Rc8 4.Qf3 Rc7 5.Qh5+ Kf8
+13.07	2.Rxc5 Qe1+ 3.Bf1 0-0 4.Be7 g5 5.Bxf8 Rxf8
It takes a while to fail-low .. Bc5, because in this +M09 position it takes a lot to fail from +13 to +M

1. Rxd7 Bc5 2. Qf4 O-O 3. Bh6 Bxf2+ 4. Kxf2 Qb6+ 5. Kf1 Qb3 *
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1r2kb1r/1pRb1ppp/4p3/q2pP1B1/p2Q4/P2B4/1P3PPP/2R3K1 w k - 1 1

Code: Select all

D=15, 0.66 MN
+13.76	6.Rc3 Qd1+ 7.Kf2 Qh5 8.Bxg7 d4
+10.14	6.Qg3 g6 7.Bxf8 Rxf8 8.Rc2 b6

D=16, 0.9 MN
+14.29	6.Rc3 Qd1+ 7.Kf2 Qh5 8.Bxg7 Kxg7
+10.98	6.Qg3 g6 7.Bxf8 Rxf8 8.Rc2 b6

D=17, 1.1 MN
+15.04	6.Rc3 Qd1+ 7.Kf2 Qh5 8.Bxg7 Kxg7
+10.97	6.Qg3 g6 7.Bxf8 Rxf8 8.Rc2 b5

D=18, 1.5 MN
+15.13	6.Rc3 Qd1+ 7.Kf2 Qh5 8.Bxg7 Kxg7
+11.13	6.Qg3 g6 7.Bxf8 Rxf8 8.Rc2 Qa2

D=19, 2.8 MN
+17.89	6.Bc4 Qxb2 7.Qg5 Qxc1+ 8.Qxc1 gxh6
+16.44	6.Rc3 Qd1+ 7.Kf2 Qh5 8.Bxg7 d4

D=20, 5.8 MN
+21.71	6.Rc3 Qd1+ 7.Kf2 Qh5 8.Bxg7 Kxg7
+19.30	6.Bc4 Qxb2 7.Qg5 Qxc1+ 8.Qxc1 gxh6

D=21, 15.3 MN
+64.43	6.Rc3 Qd1+ 7.Kf2 Qh5 8.Bxg7 d4
+19.42	6.Bc4 Qxb2 7.Qg5 Qxc1+ 8.Qxc1 gxh6

D=22, 17.3 MN
+M20	6.Rc3 Qd1+ 7.Kf2 Qh5 8.Bxg7 Kxg7
+19.52	6.Bc4 Qxb2 7.Qg5 Qxc1+ 8.Qxc1 gxh6

D=23, 19.3 MN
+M20	6.Rc3 Qd1+ 7.Kf2 Qh5 8.Bxg7 Kxg7
+20.30	6.Bc4 Qxb2 7.Qg5 Qxc1+ 8.Qxc1 gxh6

D=24, 31.1 MN
+M11	6.Bc4 Qxb2 7.Qg5 Qxc1+ 8.Qxc1 Kh8
+M20	6.Rc3 Qd1+ 7.Kf2 Qh5 8.Bxg7 Kxg7

D=25, 31.9 MN
+M11	6.Bc4 Qxb2 7.Qg5 Qxc1+ 8.Qxc1 Kh8
+M15	6.Rc3 Qd1+ 7.Kf2 Qh5 8.Bxg7 Kxg7

D=31, 42.4 MN
+M11	6.Bc4 Qxb2 7.Qg5 Qxc1+ 8.Qxc1 Kh8
+M15	6.Rc3 Qd1+ 7.Kf2 Qh5 8.Bxg7 Kxg7

D=32, 47.3 MN
+M10	6.Be2 Qxb2 7.Qg5 Qxc1+ 8.Qxc1 g6
+M11	6.Bc4 Qxb2 7.Qg5 Qxc1+ 8.Qxc1 Kh8

D=33, 50.6 MN
+M09	6.Be2 Qxb2 7.Qg5 Qxc1+ 8.Qxc1 gxh6
+M11	6.Bc4 Qxb2 7.Qg5 Qxc1+ 8.Qxc1 Kh8
This +M05 position is only +11.4 @ D=5 and +17 @ D=9
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abcdefgh

1r2kb1r/1pRb1ppp/4p3/q2pP1B1/p2Q4/P2B4/1P3PPP/2R3K1 w k - 1 1
1. Rxd7 Bc5 2. Qf4 O-O 3. Bh6 Bxf2+ 4. Kxf2 Qb6+ 5. Kf1 Qb3 6. Be2 gxh6 7.
Qxh6 Qxb2 8. Bd3 Qxc1+ 9. Qxc1 *
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User avatar
yurikvelo
Posts: 710
Joined: Sat Dec 06, 2014 1:53 pm

Re: Test the combinational vision of your engine

Post by yurikvelo »

a very poor combinational vision by stockfish.
extremely good combinational vision by stockfish lead it it other combinational winning lines with very fast evel raise.

Stockfish is not DTM-solver, there is no elo-bonus in tournaments for shortest-DTM lines

To claim "poor vision" you have to provide position in which engine cannot win fast or win at all (or loose in drawing position)

Qf4 line lead to Queen material win in 5 moves
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User avatar
Eelco de Groot
Posts: 4658
Joined: Sun Mar 12, 2006 2:40 am
Full name:   Eelco de Groot

Re: Test the combinational vision of your engine

Post by Eelco de Groot »

MikeGL wrote: ↑Tue Oct 16, 2018 12:37 pm I checked with many engines and it seems both moves are almost having equal eval due to
Qf4 move having the possibility to transpose with Rxd7! on its next move too.
The Qf4 PV actually shows Rxd7 on its next move.
Ugh, I had not even noticed that Qf4 is the second move in the Mate in 13 PVs also in Dann's PV so the possibility for a transposition is very high. But maybe not a perfect transposition in that case it would just be a matter of move ordering which move gets searched first. According to Kaissa, 1. Qf4 is # in 16 moves maybe it missed something but it already knew the M13 here in the hash table. So after 1. Qf4:
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abcdefgh

1r2kb1r/1pRb1ppp/4p3/q2pP1B1/p4Q2/P2B4/1P3PPP/2R3K1 b k -

Code: Select all

1r2kb1r/1pRb1ppp/4p3/q2pP1B1/p4Q2/P2B4/1P3PPP/2R3K1 b k -

Engine: Kaissa IV (512 MB)
by T. Romstad, M. Costalba, J. Kiiski, G. Linscott

19/30  0:01   +9.57    1...Bd6 2.exd6 d4 3.Rxd7 O-O 4.Be7 g5 
                       5.Qxd4 Rfc8 6.Rxc8+ Rxc8 7.Rxb7 Qe1+ 
                       8.Bf1 Qc1 9.Qxa4 Kg7 10.Qd4+ Kg8 
                       11.Qb4 Kg7 12.Rc7 Rxc7 13.dxc7 Qxc7 
                       14.Bxg5 (522.477) 345 

20/31  0:01   +11.02   1...Qxc7 2.Rxc7 h6 3.Rxd7 Kxd7 
                       4.Qxf7+ Kc6 5.Qxe6+ Kc7 6.Be3 Rc8 
                       7.Bf5 Bxa3 8.Qf7+ Be7 9.Qxe7+ Kb8 
                       10.Bxc8 Kxc8 11.Qxg7 Re8 12.Bxh6 (1.098.629) 585 

21/28  0:01   +10.26   1...Qxc7 2.Rxc7 Bc5 3.Bb5 O-O 4.Bxd7 Bb6 
                       5.Rc1 Bd8 6.Bxd8 Rbxd8 7.Rc7 b5 
                       8.Bxb5 d4 9.Bxa4 Rd5 10.f3 d3 11.Qb4 Rxe5 
                       12.b3 d2 13.Qxd2 (1.232.410) 628 

22/28  0:02   +10.01   1...Qxc7 2.Rxc7 Bc5 3.Bb5 O-O 4.Bxd7 Bb6 
                       5.Rc1 Bd8 6.Bxd8 Rbxd8 7.Rc7 Rb8 
                       8.Bxa4 g6 9.Qb4 h5 10.Rxb7 Rxb7 
                       11.Qxb7 Kg7 12.Qb4 Rg8 13.Qd6 (1.337.358) 662 

23/31  0:02   +12.69   1...Qxc7 2.Rxc7 Bc5 3.Rxd7 Kxd7 
                       4.Qxf7+ Kc6 5.Qxe6+ Kc7 6.Be3 d4 
                       7.Qc4 Rbd8 8.Qxc5+ Kb8 9.Bxd4 g6 
                       10.Bb5 Rxd4 11.Qxd4 Rc8 12.Qxa4 Rc7 
                       13.e6 Rc1+ 14.Bf1 Kc7 (2.520.309) 959 

24/34  0:03   +12.84-- 1...Qxc7 2.Rxc7 (3.340.119) 1101 

24/34  0:03   +12.70++ 1...Be7 (3.574.829) 1131 

24/34  0:03   +12.51++ 1...Be7 (3.672.817) 1145 

24/34  0:03   +12.27++ 1...Be7 (3.738.581) 1152 

24/34  0:03   +11.96++ 1...Be7 (3.796.416) 1156 

24/34  0:03   +11.60++ 1...Be7 (3.866.152) 1164 

24/34  0:03   +11.16++ 1...Be7 (3.932.670) 1170 

24/34  0:03   +11.52   1...Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 O-O 
                       5.Bxb8 Rxb8 6.Qb4 Re8 7.Bb5 Bxb5 
                       8.Qxb5 Rf8 9.Qxb7 g5 10.Rc8 Rxc8 
                       11.Qxc8+ Kg7 12.Qc7 Kg6 13.Qc2+ Kh6 
                       14.Qxa4 Kg7 (3.999.641) 1178 

25/36  0:03   +11.59-- 1...Be7 2.Bxe7 (4.436.717) 1221 

25/37  0:03   +11.67-- 1...Be7 2.Bxe7 (4.558.503) 1234 

25/37  0:03   +11.77-- 1...Be7 2.Bxe7 (4.758.407) 1255 

25/39  0:03   +11.92-- 1...Be7 2.Bxe7 (4.902.420) 1267 

25/40  0:03   +12.12-- 1...Be7 2.Bxe7 (5.080.132) 1284 

25/40  0:04   +12.39-- 1...Be7 2.Bxe7 (5.253.397) 1296 

25/40  0:04   +12.17++ 1...Be7 (5.365.572) 1307 

25/40  0:04   +11.76++ 1...Be7 (5.404.720) 1309 

25/43  0:04   +11.76   1...Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 O-O 
                       5.Bxb8 Rxb8 6.Qb4 Rc8 7.Bb5 g6 
                       8.Bxa4 h6 9.Qf4 Kg7 10.Bxc6 Rxc6 
                       11.Rb1 Rc4 12.Qf6+ Kg8 13.b3 Rg4 
                       14.Qe7 Kg7 (5.473.190) 1316 

26/37  0:04   +11.84-- 1...Be7 2.Bxe7 (5.960.337) 1356 

26/37  0:04   +11.91-- 1...Be7 2.Bxe7 (6.122.773) 1370 

26/37  0:04   +12.02-- 1...Be7 2.Bxe7 (6.319.309) 1383 

26/37  0:04   +12.17-- 1...Be7 2.Bxe7 (6.550.527) 1399 

26/37  0:04   +12.37-- 1...Be7 2.Bxe7 (6.755.802) 1413 

26/37  0:04   +12.20++ 1...Be7 (6.908.653) 1425 

26/37  0:04   +12.63-- 1...Be7 2.Bxe7 (7.062.708) 1433 

26/37  0:04   +12.25++ 1...Be7 (7.200.664) 1444 

26/45  0:05   +11.85   1...Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 O-O 
                       5.Bxb8 Rxb8 6.Qb4 Rc8 7.Qxa4 g6 
                       8.Bb5 Re8 9.Qb4 Rc8 10.Qh4 Rb8 
                       11.Ba4 Bxa4 12.Qxa4 h6 13.Rc7 Rd8 
                       14.Qh4 Rb8 (7.440.917) 1459 

27/32  0:05   +11.92-- 1...Be7 2.Bxe7 (7.996.717) 1488 

27/32  0:05   +12.00-- 1...Be7 2.Bxe7 (8.202.425) 1500 

27/32  0:05   +12.10-- 1...Be7 2.Bxe7 (8.471.103) 1512 

27/32  0:05   +12.25-- 1...Be7 2.Bxe7 (8.683.075) 1520 

27/32  0:05   +12.45-- 1...Be7 2.Bxe7 (8.975.097) 1537 

27/32  0:06   +12.72-- 1...Be7 2.Bxe7 (9.339.307) 1553 

27/32  0:06   +12.55   1...Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 O-O 
                       5.Bxb8 Rxb8 6.Qb4 Rc8 7.Bb5 g6 
                       8.Bxa4 Kg7 9.Qh4 Kg8 10.Qe7 h6 11.b3 d4 
                       12.Qd6 Kg7 13.Qxd4 Bxa4 14.Rxc8 Bxb3 (9.578.058) 1564 

28/32  0:06   +12.62-- 1...Be7 2.Bxe7 (10.481.547) 1597 

28/32  0:06   +12.70-- 1...Be7 2.Bxe7 (10.882.047) 1609 

28/32  0:06   +12.62++ 1...Be7 (11.113.500) 1620 

28/41  0:07   +12.57   1...Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 O-O 
                       5.Bxb8 Rxb8 6.Qb4 Rc8 7.Bb5 h6 
                       8.Bxa4 Kh7 9.Bxc6 Rxc6 10.Rxc6 bxc6 
                       11.Qb7 Kg8 12.Qb8+ Kh7 13.Qe8 Kg6 
                       14.Qxc6 h5 (11.535.672) 1634 

29/39  0:07   +12.50++ 1...Be7 (12.655.883) 1670 

29/39  0:07   +12.42++ 1...Be7 (12.933.916) 1679 

29/39  0:07   +12.32++ 1...Be7 (13.345.878) 1689 

29/45  0:08   +12.20   1...Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 O-O 
                       5.Bxb8 Rxb8 6.Qb4 Rc8 7.Bb5 g6 
                       8.Qxa4 h5 9.Qb4 Kg7 10.Ba4 Kg8 
                       11.Qe7 Kg7 12.Bxc6 Rxc6 13.Rd1 Kg8 
                       14.Qxb7 Rc2 (14.137.532) 1711 

30/35  0:09   +12.28-- 1...Be7 2.Bxe7 (15.749.708) 1744 

30/35  0:09   +12.35-- 1...Be7 2.Bxe7 (16.380.413) 1755 

30/43  0:09   +12.46-- 1...Be7 2.Bxe7 (17.088.728) 1770 

30/43  0:09   +12.37++ 1...Be7 (17.581.290) 1781 

30/44  0:10   +12.17++ 1...Be7 (18.168.364) 1785 

30/44  0:10   +12.42   1...Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 O-O 
                       5.Qh4 g6 6.Bxb8 Rxb8 7.Qb4 Ra8 8.Bb5 Rc8 
                       9.Qxa4 Kf8 10.Bxc6 Kg8 11.Qa7 Rxc6 
                       12.Qa8+ Kg7 13.Rxc6 bxc6 14.Qxc6 Kh6 (18.517.546) 1789 

31/39  0:11   +12.49-- 1...Be7 2.Bxe7 (20.459.100) 1810 

31/43  0:11   +12.42++ 1...Be7 (21.117.385) 1816 

31/43  0:11   +12.31++ 1...Be7 (21.619.987) 1820 

31/46  0:12   +12.16++ 1...Be7 (22.615.804) 1825 

31/51  0:12   +12.35   1...Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 O-O 
                       5.Qh4 g6 6.Bxb8 Rxb8 7.Qb4 Ra8 8.Qb6 Rc8 
                       9.Bb5 Kh8 10.Bxa4 Kg8 11.Qb4 Rc7 
                       12.Qd6 Rc8 13.Qe7 Kg7 14.Qb4 Kg8 (23.104.975) 1831 

32/41  0:13   +12.43-- 1...Be7 2.Bxe7 (25.232.272) 1845 

32/41  0:13   +12.42   1...Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 O-O 
                       5.Bxb8 Rxb8 6.Qb4 Rc8 7.Bb5 g6 
                       8.Bxa4 Rc7 9.Qd6 Rc8 10.Qe7 Kg7 
                       11.Qb4 Kg8 12.Qd6 Kg7 13.Qe7 Kg8 
                       14.Rxc6 Rxc6 (26.007.722) 1859 

33/50  0:15   +12.50-- 1...Be7 2.Bxe7 (29.126.913) 1889 

33/50  0:15   +12.42++ 1...Be7 (30.032.386) 1902 

33/50  0:16   +12.32++ 1...Be7 (30.889.665) 1910 

33/50  0:16   +12.37   1...Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 O-O 
                       5.Bxb8 Rxb8 6.Qb4 Rc8 7.Bb5 g6 8.Rc5 Kg7 
                       9.Bxa4 Kg8 10.Rc1 Rc7 11.Qd6 Rc8 
                       12.Qe7 Kg7 13.Bb5 Kg8 14.Bxc6 Rxc6 (31.459.574) 1917 

34/40  0:17   +12.44-- 1...Be7 2.Bxe7 (34.530.867) 1940 

34/50  0:18   +12.52-- 1...Be7 2.Bxe7 (36.721.137) 1948 

34/50  0:20   +12.52   1...Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 O-O 
                       5.Bxb8 Rxb8 6.Qh4 g6 7.Qb4 Re8 8.Bb5 Rc8 
                       9.Bxa4 Kg7 10.Qe7 Kg8 11.Bxc6 Rxc6 
                       12.Qe8+ Kg7 13.Rxc6 bxc6 14.Qxc6 Kf8 (39.314.797) 1961 

35/50  0:22   +12.60-- 1...Be7 2.Bxe7 (44.881.096) 1981 

35/50  0:23   +12.67-- 1...Be7 2.Bxe7 (47.449.342) 1996 

35/50  0:24   +12.78-- 1...Be7 2.Bxe7 (49.997.880) 2006 

35/50  0:26   +12.93-- 1...Be7 2.Bxe7 (52.870.895) 2019 

35/50  0:27   +13.13-- 1...Be7 2.Bxe7 (55.689.145) 2019 

35/50  0:29   +13.39-- 1...Be7 2.Bxe7 (59.045.369) 2024 

35/50  0:31   +13.72-- 1...Be7 2.Bxe7 (63.314.941) 2038 

35/50  0:33   +14.14-- 1...Be7 2.Bxe7 (68.616.845) 2050 

35/50  0:36   +14.66-- 1...Be7 2.Bxe7 (75.368.037) 2047 

35/50  0:40   +15.29-- 1...Be7 2.Bxe7 (83.661.588) 2064 

35/50  0:47   +16.06-- 1...Be7 2.Bxe7 (98.529.542) 2090 

35/50  0:58   +17.00-- 1...Be7 2.Bxe7 (125.648.643) 2145 

35/56  1:12   +17.53   1...Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 Rc8 
                       5.Bd6 Rd8 6.Qg5 Rxd6 7.exd6 O-O 
                       8.Qe7 g6 9.d7 Bxd7 10.Qxd7 b6 11.Rc7 d4 
                       12.Qxd4 b5 13.Bxb5 Ra8 14.Bxa4 Rb8 (158.461.261) 2191 

36/44  1:25   +17.60-- 1...Be7 2.Bxe7 (188.495.074) 2205 

36/57  1:32   +17.68-- 1...Be7 2.Bxe7 (204.915.734) 2224 

36/57  1:38   +17.79-- 1...Be7 2.Bxe7 (219.104.892) 2232 

36/57  1:46   +17.94-- 1...Be7 2.Bxe7 (238.341.272) 2239 

36/57  1:55   +18.14-- 1...Be7 2.Bxe7 (259.964.391) 2249 

36/57  2:07   +18.40-- 1...Be7 2.Bxe7 (289.804.301) 2268 

36/57  2:24   +18.73-- 1...Be7 2.Bxe7 (329.961.580) 2286 

36/59  2:44   +19.15-- 1...Be7 2.Bxe7 (380.372.555) 2316 

36/61  3:03   +19.67-- 1...Be7 2.Bxe7 (426.977.568) 2332 

36/61  3:21   +19.89   1...Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 O-O 
                       5.Bxb8 Rxb8 6.Bxh7+ Kxh7 7.Qxf7 d4 
                       8.Rd1 Be8 9.Qxe6 Bh5 10.Rxd4 Re8 
                       11.Qf5+ Bg6 12.Rh4+ Kg8 13.Qxg6 Rxe5 
                       14.f4 Re7 (471.683.041) 2343 

37/50  3:41   +19.97-- 1...Be7 2.Bxe7 (520.228.516) 2345 

37/50  3:50   +20.04-- 1...Be7 2.Bxe7 (540.435.548) 2348 

37/50  3:59   +20.15-- 1...Be7 2.Bxe7 (563.781.659) 2351 

37/50  4:14   +20.30-- 1...Be7 2.Bxe7 (600.301.972) 2356 

37/50  4:32   +20.50-- 1...Be7 2.Bxe7 (642.911.737) 2361 

37/50  4:52   +20.76-- 1...Be7 2.Bxe7 (691.974.470) 2364 

37/53  5:17   +21.10-- 1...Be7 2.Bxe7 (753.482.897) 2372 

37/53  5:48   +21.51-- 1...Be7 2.Bxe7 (828.282.981) 2379 

37/53  6:24   +22.03-- 1...Be7 2.Bxe7 (918.012.974) 2385 

37/56  7:06   +22.66-- 1...Be7 2.Bxe7 (1.019.390.007) 2392 

37/56  7:21   +22.13++ 1...Be7 (1.059.104.982) 2398 

37/56  7:53   +23.43-- 1...Be7 2.Bxe7 (1.138.104.632) 2404 

37/56  8:49   +24.53-- 1...Be7 2.Bxe7 (1.278.529.435) 2413 

37/56  9:47   +25.81-- 1...Be7 2.Bxe7 (1.422.644.804) 2421 

37/56  10:48  +27.32-- 1...Be7 2.Bxe7 (1.573.909.259) 2425 

37/56  11:57  +29.10-- 1...Be7 2.Bxe7 (1.742.071.595) 2428 

37/56  11:59  +27.47++ 1...Be7 (1.747.655.384) 2428 

37/56  12:52  +31.22-- 1...Be7 2.Bxe7 (1.875.156.482) 2426 

37/56  13:56  +34.14-- 1...Be7 2.Bxe7 (2.029.698.576) 2426 

37/56  14:47  +37.50-- 1...Be7 2.Bxe7 (2.152.672.219) 2426 

37/56  14:50  +33.20++ 1...Be7 (2.159.664.239) 2426 

37/56  15:08  +41.41-- 1...Be7 2.Bxe7 (2.204.017.687) 2426 

37/56  15:21  +46.71-- 1...Be7 2.Bxe7 (2.236.547.877) 2427 

37/56  15:25  +40.16++ 1...Be7 (2.246.162.661) 2427 

37/56  15:27  +32.71++ 1...Be7 (2.251.048.600) 2427 

37/56  15:29  +24.69++ 1...Be7 (2.256.294.873) 2427 

37/59  15:38  +52.72-- 1...Be7 2.Bxe7 (2.279.729.241) 2429 

37/59  16:10  +57.37   1...Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 O-O 
                       5.Bxb8 Rxb8 6.Bxh7+ Kxh7 7.Qxf7 d4 
                       8.Rd1 Be8 9.Qxe6 Bh5 10.Rxd4 Rf8 
                       11.Rh4 g6 12.g4 Rf4 13.gxh5 Rxh4 
                       14.Qxg6+ Kh8 (2.363.068.032) 2434 

38/59  16:48  +57.45-- 1...Be7 2.Bxe7 (2.456.971.835) 2436 

38/59  16:56  +57.52-- 1...Be7 2.Bxe7 (2.476.301.309) 2437 

38/59  17:00  +57.63-- 1...Be7 2.Bxe7 (2.487.019.752) 2437 

38/59  17:05  +57.78-- 1...Be7 2.Bxe7 (2.501.182.482) 2437 

38/59  17:11  +57.98-- 1...Be7 2.Bxe7 (2.514.561.060) 2438 

38/59  17:14  +58.24-- 1...Be7 2.Bxe7 (2.523.467.130) 2438 

38/59  17:23  +58.57-- 1...Be7 2.Bxe7 (2.545.589.996) 2438 

38/59  17:27  +58.99-- 1...Be7 2.Bxe7 (2.555.722.179) 2438 

38/59  17:31  +59.65-- 1...Be7 2.Bxe7 (2.565.708.293) 2439 

38/59  17:37  +60.14-- 1...Be7 2.Bxe7 (2.579.933.931) 2440 

38/59  17:40  +58.25++ 1...Be7 (2.588.497.673) 2440 

38/59  17:47  +60.91-- 1...Be7 2.Bxe7 (2.606.368.303) 2441 

38/59  17:58  +62.01-- 1...Be7 2.Bxe7 (2.634.329.024) 2441 

38/59  18:08  +63.22-- 1...Be7 2.Bxe7 (2.659.183.346) 2442 

38/62  18:18  +64.60-- 1...Be7 2.Bxe7 (2.683.040.475) 2443 

38/62  18:32  +66.23-- 1...Be7 2.Bxe7 (2.720.141.079) 2444 

38/62  18:47  +68.15-- 1...Be7 2.Bxe7 (2.757.744.169) 2445 

38/62  18:55  +70.42-- 1...Be7 2.Bxe7 (2.778.814.202) 2446 

38/62  19:07  +73.11-- 1...Be7 2.Bxe7 (2.806.924.255) 2446 

38/62  19:15  +76.40-- 1...Be7 2.Bxe7 (2.826.514.078) 2447 

38/62  19:23  +80.18-- 1...Be7 2.Bxe7 (2.846.203.626) 2446 

38/62  19:28  +85.31-- 1...Be7 2.Bxe7 (2.858.395.392) 2446 

38/62  19:30  +132.71--1...Be7 2.Bxe7 (2.863.340.700) 2446 

38/62  19:42  +77.98++ 1...Be7 (2.896.149.491) 2449 

38/62  19:42  +70.36++ 1...Be7 (2.897.328.847) 2449 

38/62  19:52  +63.26++ 1...Qc5 (2.922.141.187) 2450 

38/62  19:52  +58.20   1...Qc5 2.R1xc5 Bxc5 3.Rxd7 Kxd7 
                       4.Qxf7+ Kc6 5.Qxe6+ Kc7 6.Be3 Rbc8 
                       7.Bxc5 Kb8 8.Bd6+ Ka7 9.Qxd5 Rc1+ 
                       10.Bf1 b6 11.Qf7+ Ka8 12.Qf4 Rxf1+ 
                       13.Kxf1 Kb7 14.Qe4+ Ka6 (2.922.959.691) 2450 

39/40  19:57  +58.28-- 1...Qc5 2.R1xc5 (2.933.586.428) 2450 

39/40  19:59  +58.35-- 1...Qc5 2.R1xc5 (2.939.480.269) 2450 

39/41  20:01  +58.46-- 1...Qc5 2.R1xc5 (2.943.749.984) 2450 

39/41  20:01  +58.61-- 1...Qc5 2.R1xc5 (2.945.788.554) 2450 

39/41  20:02  +58.81-- 1...Qc5 2.R1xc5 (2.947.637.705) 2451 

39/41  20:03  +59.07-- 1...Qc5 2.R1xc5 (2.948.781.175) 2450 

39/41  20:03  +59.41-- 1...Qc5 2.R1xc5 (2.949.232.365) 2450 

39/41  20:03  +59.82-- 1...Qc5 2.R1xc5 (2.950.812.648) 2450 

39/41  20:04  +60.34-- 1...Qc5 2.R1xc5 (2.951.599.430) 2450 

39/41  20:04  +60.97-- 1...Qc5 2.R1xc5 (2.952.700.428) 2450 

39/42  20:05  +61.75-- 1...Qc5 2.R1xc5 (2.955.110.220) 2450 

39/42  20:07  +62.68-- 1...Qc5 2.R1xc5 (2.958.616.709) 2451 

39/42  20:09  +63.80-- 1...Qc5 2.R1xc5 (2.963.892.861) 2451 

39/42  20:10  +65.15-- 1...Qc5 2.R1xc5 (2.966.458.448) 2451 

39/43  20:14  +66.79-- 1...Qc5 2.R1xc5 (2.976.629.836) 2450 

39/48  20:15  +69.23-- 1...Qc5 2.R1xc5 (2.978.911.962) 2450 

39/48  20:19  +70.99-- 1...Qc5 2.R1xc5 (2.988.123.725) 2450 

39/48  20:20  +74.50-- 1...Qc5 2.R1xc5 (2.991.667.538) 2450 

39/48  20:22  +132.75--1...Qc5 2.R1xc5 (2.994.898.871) 2450 

39/48  20:30  +132.75--1...Qc5 2.R1xc5 (3.016.235.042) 2450 

39/48  20:32  +132.75--1...Qc5 2.R1xc5 (3.018.977.363) 2450 

39/49  20:39  +73.35++ 1...Qc5 (3.038.950.860) 2451 

39/57  20:42  +68.20++ 1...Be7 (3.046.017.387) 2451 

39/57  20:43  +61.58++ 1...Be7 (3.047.814.652) 2451 

39/57  20:43  +53.66++ 1...Be7 (3.049.051.790) 2451 

39/57  20:45  +36.44++ 1...Be7 (3.052.994.371) 2451 

39/57  20:46  +27.34++ 1...Be7 (3.055.906.151) 2451 

39/57  20:48  +21.30   1...Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 O-O 
                       5.Bxb8 Rxb8 6.Bxh7+ Kxh7 7.Qxf7 d4 
                       8.Rd1 Be8 9.Qxe6 d3 10.Rxd3 Bh5 
                       11.Qf5+ Kg8 12.Qxh5 Rc8 13.Qg5 b5 
                       14.Rd4 Rc1+ (3.060.639.338) 2451 

40/41  20:59  +21.37-- 1...Be7 2.Bxe7 (3.087.736.739) 2452 

40/41  21:04  +21.45-- 1...Be7 2.Bxe7 (3.100.574.431) 2452 

40/41  21:09  +21.55-- 1...Be7 2.Bxe7 (3.114.178.904) 2452 

40/50  21:14  +21.70-- 1...Be7 2.Bxe7 (3.126.011.674) 2452 

40/50  21:18  +21.90-- 1...Be7 2.Bxe7 (3.137.158.865) 2452 

40/50  21:23  +22.17-- 1...Be7 2.Bxe7 (3.147.768.649) 2452 

40/50  21:27  +22.50-- 1...Be7 2.Bxe7 (3.159.023.496) 2452 

40/50  21:32  +22.92-- 1...Be7 2.Bxe7 (3.170.463.230) 2453 

40/50  21:37  +23.43-- 1...Be7 2.Bxe7 (3.183.016.191) 2453 

40/50  21:43  +24.07-- 1...Be7 2.Bxe7 (3.197.144.274) 2453 

40/50  21:48  +24.84-- 1...Be7 2.Bxe7 (3.209.740.111) 2453 

40/50  21:53  +25.77-- 1...Be7 2.Bxe7 (3.224.112.981) 2453 

40/50  22:00  +26.90-- 1...Be7 2.Bxe7 (3.239.050.022) 2453 

40/50  22:08  +28.24-- 1...Be7 2.Bxe7 (3.259.941.102) 2454 

40/50  22:16  +29.85-- 1...Be7 2.Bxe7 (3.280.391.762) 2454 

40/50  22:23  +31.76-- 1...Be7 2.Bxe7 (3.298.863.054) 2454 

40/50  22:32  +34.03-- 1...Be7 2.Bxe7 (3.319.253.524) 2454 

40/50  22:44  +36.72-- 1...Be7 2.Bxe7 (3.350.934.253) 2455 

40/50  22:51  +39.92-- 1...Be7 2.Bxe7 (3.368.932.784) 2455 

40/50  22:56  +43.70-- 1...Be7 2.Bxe7 (3.381.064.515) 2455 

40/50  23:00  +48.16-- 1...Be7 2.Bxe7 (3.391.838.796) 2456 

40/50  23:08  +53.44-- 1...Be7 2.Bxe7 (3.410.937.295) 2456 

40/50  23:17  +59.67-- 1...Be7 2.Bxe7 (3.434.557.450) 2457 

40/50  23:28  +67.03-- 1...Be7 2.Bxe7 (3.462.112.613) 2458 

40/50  23:39  +75.82-- 1...Be7 2.Bxe7 (3.490.613.546) 2458 

40/50  23:47  +132.68--1...Be7 2.Bxe7 (3.511.820.427) 2459 

40/57  24:09  +72.70++ 1...Qxc7 (3.565.848.789) 2460 

40/57  24:10  +67.62   1...Qxc7 2.Rxc7 Bc5 3.Rxd7 Kxd7 
                       4.Qxf7+ Kc6 5.Qxe6+ Kc7 6.Be3 Rbc8 
                       7.Bxc5 Kb8 8.Bd6+ Ka7 9.Qxd5 Rc1+ 
                       10.Bf1 b6 11.Qf7+ Ka8 12.Qf4 Rxf1+ 
                       13.Kxf1 g5 14.Qe4+ Ka7 (3.568.746.194) 2460 

41/47  24:23  +67.96-- 1...Qxc7 2.Rxc7 (3.599.207.485) 2458 

41/47  24:26  +67.96-- 1...Qxc7 2.Rxc7 (3.605.666.771) 2459 

41/47  24:27  +68.05-- 1...Qxc7 2.Rxc7 (3.609.408.341) 2459 

41/49  24:30  +68.17-- 1...Qxc7 2.Rxc7 (3.614.930.024) 2459 

41/49  24:31  +68.32-- 1...Qxc7 2.Rxc7 (3.617.819.589) 2459 

41/49  24:31  +68.68-- 1...Qxc7 2.Rxc7 (3.619.499.734) 2459 

41/49  24:32  +69.23-- 1...Qxc7 2.Rxc7 (3.621.662.319) 2459 

41/49  24:32  +69.35-- 1...Qxc7 2.Rxc7 (3.622.702.783) 2459 

41/49  24:33  +69.73-- 1...Qxc7 2.Rxc7 (3.623.648.467) 2459 

41/51  24:33  +70.19-- 1...Qxc7 2.Rxc7 (3.624.876.359) 2459 

41/51  24:34  +70.74-- 1...Qxc7 2.Rxc7 (3.626.627.506) 2459 

41/51  24:35  +71.40-- 1...Qxc7 2.Rxc7 (3.629.293.947) 2459 

41/51  24:36  +73.55-- 1...Qxc7 2.Rxc7 (3.631.269.001) 2459 

41/51  24:37  +73.55-- 1...Qxc7 2.Rxc7 (3.633.376.764) 2459 

41/51  24:38  +74.67-- 1...Qxc7 2.Rxc7 (3.636.220.319) 2459 

41/51  24:40  +76.40-- 1...Qxc7 2.Rxc7 (3.641.489.732) 2459 

41/51  24:41  +79.85-- 1...Qxc7 2.Rxc7 (3.643.132.814) 2459 

41/51  24:52  +132.68--1...Qxc7 2.Rxc7 (3.671.173.537) 2459 

41/51  24:57  +77.98++ 1...Be7 (3.682.084.784) 2459 

41/51  24:57  +74.55++ 1...Be7 (3.683.898.564) 2459 

41/57  25:01  +M26     1...Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 O-O 
                       5.Bxb8 Rxb8 6.Bxh7+ Kxh7 7.Qxf7 d4 
                       8.Rd1 Be8 9.Qxe6 Bh5 10.Rxd4 Re8 
                       11.Qf5+ Bg6 12.Rh4+ Kg8 13.Qxg6 Rxe5 
                       14.f4 Re1+ (3.692.588.972) 2459 

42/49  25:15  +M26     1...Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 O-O 
                       5.Bxb8 Rxb8 6.Bxh7+ Kxh7 7.Qxf7 d4 
                       8.Rd1 Be8 9.Qxe6 Bh5 10.Rxd4 Re8 
                       11.Qf5+ Bg6 12.Rh4+ Kg8 13.Qxg6 Rxe5 
                       14.f4 Re1+ (3.728.892.217) 2460 

43/47  25:17  +M37++   1...Be7 (3.733.088.933) 2460 

43/53  25:17  +M47++   1...Be7 (3.733.895.501) 2460 

43/59  25:24  +M26     1...Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 O-O 
                       5.Bxb8 Rxb8 6.Bxh7+ Kxh7 7.Qxf7 d4 
                       8.Rd1 Be8 9.Qxe6 Bh5 10.Rxd4 Re8 
                       11.Qf5+ Bg6 12.Rh4+ Kg8 13.Qxg6 Rxe5 
                       14.f4 Re1+ (3.751.861.072) 2461 

44/53  26:06  +M26     1...Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 O-O 
                       5.Bxb8 Rxb8 6.Bxh7+ Kxh7 7.Qxf7 d4 
                       8.Rd1 Be8 9.Qxe6 Bh5 10.Rxd4 Re8 
                       11.Qf5+ Bg6 12.Rh4+ Kg8 13.Qxg6 Rxe5 
                       14.f4 Re1+ (3.858.550.937) 2463 

45/53  26:35  +M26     1...Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 O-O 
                       5.Bxb8 Rxb8 6.Bxh7+ Kxh7 7.Qxf7 d4 
                       8.Rd1 Be8 9.Qxe6 Bh5 10.Rxd4 Re8 
                       11.Qf5+ Bg6 12.Rh4+ Kg8 13.Qxg6 Rxe5 
                       14.f4 Re1+ (3.934.157.286) 2465 

46/53  27:19  +M26     1...Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 O-O 
                       5.Bxb8 Rxb8 6.Bxh7+ Kxh7 7.Qxf7 d4 
                       8.Rd1 Be8 9.Qxe6 Bh5 10.Rxd4 Re8 
                       11.Qf5+ Bg6 12.Rh4+ Kg8 13.Qxg6 Rxe5 
                       14.f4 Re1+ (4.049.025.929) 2468 

47/53  28:20  +M26     1...Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 O-O 
                       5.Bxb8 Rxb8 6.Bxh7+ Kxh7 7.Qxf7 d4 
                       8.Rd1 Be8 9.Qxe6 Bh5 10.Rxd4 Re8 
                       11.Qf5+ Bg6 12.Rh4+ Kg8 13.Qxg6 Rxe5 
                       14.f4 Re1+ (4.203.517.977) 2472 

48/55  29:28  +M27     1...Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 O-O 
                       5.Bxb8 Rxb8 6.Bxh7+ Kxh7 7.Qxf7 d4 
                       8.Rd1 Be8 9.Qxe6 Bh5 10.Rxd4 Re8 
                       11.Qf5+ Bg6 12.Rh4+ Kg8 13.Qxg6 Rxe5 
                       14.f4 Re7 (4.377.931.364) 2475 

49/57  30:52  +M26     1...Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 O-O 
                       5.Bxb8 Rxb8 6.Bxh7+ Kxh7 7.Qxf7 d4 
                       8.Rd1 Be8 9.Qxe6 Bh5 10.Rxd4 Re8 
                       11.Qf5+ Bg6 12.Rh4+ Kg8 13.Qxg6 Rxe5 
                       14.f4 Re7 (4.591.101.449) 2478 

50/57  32:39  +M25     1...Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 O-O 
                       5.Bxb8 Rxb8 6.Bxh7+ Kxh7 7.Qxf7 d4 
                       8.Rd1 Be8 9.Qxe6 Bh5 10.Rxd4 Re8 
                       11.Qf5+ Bg6 12.Rh4+ Kg8 13.Qxg6 Rxe5 
                       14.f4 Re7 (4.860.916.579) 2481 

51/53  34:20  +M25     1...Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 O-O 
                       5.Bxb8 Rxb8 6.Bxh7+ Kxh7 7.Qxf7 d4 
                       8.Rd1 Be8 9.Qxe6 Bh5 10.Rxd4 Re8 
                       11.Qf5+ Bg6 12.Rh4+ Kg8 13.Qxg6 Rxe5 
                       14.f4 Re7 (5.119.259.934) 2484 

52/53  36:06  +M25     1...Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 O-O 
                       5.Bxb8 Rxb8 6.Bxh7+ Kxh7 7.Qxf7 d4 
                       8.Rd1 Be8 9.Qxe6 Bh5 10.Rxd4 Re8 
                       11.Qf5+ Bg6 12.Rh4+ Kg8 13.Qxg6 Rxe5 
                       14.f4 Re7 (5.392.837.626) 2489 

53/51  38:06  +M25     1...Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 O-O 
                       5.Bxb8 Rxb8 6.Bxh7+ Kxh7 7.Qxf7 d4 
                       8.Rd1 Be8 9.Qxe6 Bh5 10.Rxd4 Re8 
                       11.Qf5+ Bg6 12.Rh4+ Kg8 13.Qxg6 Rxe5 
                       14.f4 Re7 (5.697.623.680) 2492 

54/53  41:40  +M24     1...Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 O-O 
                       5.Bxb8 Rxb8 6.Bxh7+ Kxh7 7.Qxf7 d4 
                       8.Rd1 Be8 9.Qxe6 Bh5 10.Rxd4 Re8 
                       11.Qf5+ Bg6 12.Rh4+ Kg8 13.Qxg6 Rxe5 
                       14.f4 Re7 (6.247.564.828) 2498 

55/49  43:54  +M24     1...Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 O-O 
                       5.Bxb8 Rxb8 6.Bxh7+ Kxh7 7.Qxf7 d4 
                       8.Rd1 Be8 9.Qxe6 Bh5 10.Rxd4 Re8 
                       11.Qf5+ Bg6 12.Rh4+ Kg8 13.Qxg6 Rxe5 
                       14.f4 Re7 (6.590.782.707) 2501 

56/51  46:41  +M24     1...Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 O-O 
                       5.Bxb8 Rxb8 6.Bxh7+ Kxh7 7.Qxf7 d4 
                       8.Rd1 Be8 9.Qxe6 Bh5 10.Rxd4 Re8 
                       11.Qf5+ Bg6 12.Rh4+ Kg8 13.Qxg6 Rxe5 
                       14.f4 Re1+ (7.021.113.017) 2506 

57/55  53:00  +M20     1...Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 Rc8 
                       5.Bd6 Rd8 6.Qg5 Rxd6 7.exd6 O-O 
                       8.Qe7 g6 9.d7 Kg7 10.Qxf8+ Kxf8 
                       11.d8Q+ Kg7 12.Re1 e5 13.Rxe5 b5 
                       14.Re7 b4 (8.004.323.022) 2516 

58/41  59:40  +M17     1...Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 d4 
                       5.Bxb8 O-O 6.Bd6 Re8 7.Bxh7+ Kxh7 
                       8.Qxf7 Rd8 9.Be7 Rd7 10.Qh5+ Kg8 
                       11.Rxc6 bxc6 12.Qe8+ Kh7 13.Qxd7 Kg6 
                       14.Qxe6+ Kh7 (9.038.267.190) 2524 

59/39  64:16  +M17     1...Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 d4 
                       5.Bxb8 O-O 6.Bd6 Re8 7.Bxh7+ Kxh7 
                       8.Qxf7 Rd8 9.Be7 Rd7 10.Qh5+ Kg8 
                       11.Rxc6 bxc6 12.Qe8+ Kh7 13.Qxd7 Kg6 
                       14.Qxe6+ Kh7 (9.754.486.980) 2529 

60/37  70:57  +M17     1...Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 O-O 
                       5.Bxb8 h6 6.Bd6 Re8 7.Rxc6 bxc6 
                       8.Qxa4 Rd8 9.Be7 Rc8 10.Qa6 Re8 
                       11.Qxc6 Rb8 12.Qd7 g6 13.Bf6 Rf8 
                       14.Bxg6 h5 (10.798.349.418) 2536 

61/35  75:52  +M17     1...Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 O-O 
                       5.Bxb8 h6 6.Bd6 Re8 7.Rxc6 bxc6 
                       8.Qxa4 Rd8 9.Be7 Rc8 10.Qa6 Re8 
                       11.Qxc6 Rb8 12.Qd7 g6 13.Bf6 Rf8 
                       14.Bxg6 h5 (11.559.854.298) 2539 

62/35  84:01  +M17     1...Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 O-O 
                       5.Bxb8 h6 6.Bd6 Re8 7.Rxc6 bxc6 
                       8.Qxa4 Rd8 9.Be7 Rc8 10.Qa6 Re8 
                       11.Qxc6 Rb8 12.Qd7 g6 13.Bf6 Rf8 
                       14.Bxg6 h5 (12.836.284.493) 2546 

63/35  90:10  +M17     1...Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 O-O 
                       5.Bxb8 h6 6.Bd6 Re8 7.Rxc6 bxc6 
                       8.Qxa4 Rd8 9.Be7 Rc8 10.Qa6 Re8 
                       11.Qxc6 Rb8 12.Qd7 g6 13.Bf6 Rf8 
                       14.Bxg6 h5 (13.792.571.761) 2549 

64/35  98:09  +M17     1...Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 O-O 
                       5.Bxb8 h6 6.Bd6 Re8 7.Rxc6 bxc6 
                       8.Qxa4 h5 9.Qxc6 Rd8 10.Be7 Rb8 
                       11.Qd7 g6 12.Bf6 Rf8 13.Bxg6 h4 
                       14.Bxf7+ Rxf7 (15.037.731.245) 2553 

65/35  115:14 +M16     1...Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 Rc8 
                       5.Bd6 Rd8 6.Rxc6 bxc6 7.Bc5 d4 8.Qg5 Rd7 
                       9.Qxg7 Rd5 10.Qxh8+ Kd7 11.Qf8 Rxc5 
                       12.Qxc5 f5 13.exf6 Kc7 14.f7 Kb7 (17.684.105.980) 2557 

66/33  126:47 +M16     1...Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 Rc8 
                       5.Bd6 Rd8 6.Rxc6 bxc6 7.Bc5 d4 8.Qg5 Rd7 
                       9.Qxg7 Rd5 10.Qxh8+ Kd7 11.Qf8 Rxc5 
                       12.Qxc5 f5 13.exf6 Kc7 14.f7 Kb7 (19.500.437.832) 2563 

67/33  139:55 +M16     1...Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 Rc8 
                       5.Bd6 Rd8 6.Rxc6 bxc6 7.Bc5 d4 8.Qg5 Rd7 
                       9.Qxg7 Rd5 10.Qxh8+ Kd7 11.Qf8 Rxc5 
                       12.Qxc5 f5 13.exf6 Kc7 14.f7 Kb7 (21.499.490.898) 2560 

68/33  156:01 +M16     1...Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 Rc8 
                       5.Bd6 Rd8 6.Rxc6 bxc6 7.Bc5 d4 8.Qg5 Rd7 
                       9.Qxg7 Rd5 10.Qxh8+ Kd7 11.Qf8 Rxc5 
                       12.Qxc5 f5 13.exf6 Kc7 14.f7 Kb7 (24.002.236.351) 2563 

69/33  170:55 +M16     1...Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 Rc8 
                       5.Bd6 Rd8 6.Rxc6 bxc6 7.Bc5 d4 8.Qg5 Rd7 
                       9.Qxg7 Rd5 10.Qxh8+ Kd7 11.Qf8 Rxc5 
                       12.Qxc5 f5 13.exf6 Kc7 14.f7 Kb7 (26.285.521.868) 2563 

70/33  192:23 +M16     1...Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 Rc8 
                       5.Bd6 Rd8 6.Rxc6 bxc6 7.Bc5 d4 8.Qg5 Rd7 
                       9.Qxg7 Rd5 10.Qxh8+ Kd7 11.Qf8 Rxc5 
                       12.Qxc5 f5 13.exf6 Kc7 14.f7 Kb7 (29.604.283.569) 2564 

71/33  214:44 +M16     1...Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 Rc8 
                       5.Bd6 Rd8 6.Rxc6 bxc6 7.Bc5 d4 8.Qg5 Rd7 
                       9.Qxg7 Rd5 10.Qxh8+ Kd7 11.Qf8 Rxc5 
                       12.Qxc5 f5 13.exf6 Kc7 14.f7 Kb7 (33.048.742.856) 2565 

72/33  251:27 +M16     1...Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 Rc8 
                       5.Bd6 Rd8 6.Rxc6 bxc6 7.Bc5 d4 8.Qg5 Rd7 
                       9.Qxg7 Rd5 10.Qxh8+ Kd7 11.Qf8 Rxc5 
                       12.Qxc5 f5 13.exf6 Kc7 14.f7 Kb7 (38.748.171.971) 2568 

73/33  301:10 +M16     1...Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 Rc8 
                       5.Bd6 Rd8 6.Rxc6 bxc6 7.Bc5 d4 8.Qg5 Rd7 
                       9.Qxg7 Rd5 10.Qxh8+ Kd7 11.Qf8 Rxc5 
                       12.Qxc5 f5 13.exf6 Kc7 14.f7 Kb7 (46.532.731.406) 2575 

74/33  349:38 +M16     1...Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 Rc8 
                       5.Bd6 Rd8 6.Rxc6 bxc6 7.Bc5 d4 8.Qg5 Rd7 
                       9.Qxg7 Rd5 10.Qxh8+ Kd7 11.Qf8 Rxc5 
                       12.Qxc5 f5 13.exf6 Kc7 14.f7 Kb7 (54.085.130.143) 2578 

75/33  407:24 +M16     1...Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 Rc8 
                       5.Bd6 Rd8 6.Rxc6 bxc6 7.Bc5 d4 8.Qg5 Rd7 
                       9.Qxg7 Rd5 10.Qxh8+ Kd7 11.Qf8 Rxc5 
                       12.Qxc5 f5 13.exf6 Kc7 14.f7 Kb7 (63.086.468.865) 2580 

76/33  485:46 +M16     1...Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 Rc8 
                       5.Bd6 Rd8 6.Rxc6 bxc6 7.Bc5 d4 8.Qg5 Rd7 
                       9.Qxg7 Rd5 10.Qxh8+ Kd7 11.Qf8 Rxc5 
                       12.Qxc5 f5 13.exf6 Kc7 14.f7 Kb7 (75.390.050.579) 2586 

77/33  573:40 +M16     1...Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 Rc8 
                       5.Bd6 Rd8 6.Rxc6 bxc6 7.Bc5 d4 8.Qg5 Rd7 
                       9.Qxg7 Rd5 10.Qxh8+ Kd7 11.Qf8 Rxc5 
                       12.Qxc5 f5 13.exf6 Kc7 14.f7 Kb7 (89.230.074.277) 2592 

78/33  688:11 +M16     1...Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 Rc8 
                       5.Bd6 Rd8 6.Rxc6 bxc6 7.Bc5 d4 8.Qg5 Rd7 
                       9.Qxg7 Rd5 10.Qxh8+ Kd7 11.Qf8 Rxc5 
                       12.Qxc5 f5 13.exf6 Kc7 14.f7 Kb7 (107.524.314.597) 2604 

79/33  719:01 +M16     1...Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 Rc8 
                       5.Bd6 Rd8 6.Rxc6 bxc6 7.Bc5 d4 8.Qg5 Rd7 
                       9.Qxg7 Rd5 10.Qxh8+ Kd7 11.Qf8 Rxc5 
                       12.Qxc5 f5 13.exf6 Kc7 14.f7 Kb7 (112.524.830.831) 2608 

best move: Bf8-e7 time: 719:01.500 min  n/s: 2.608.273  nodes: 112.524.830.831
Debugging is twice as hard as writing the code in the first
place. Therefore, if you write the code as cleverly as possible, you
are, by definition, not smart enough to debug it.
-- Brian W. Kernighan
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Vinvin
Posts: 5287
Joined: Thu Mar 09, 2006 9:40 am
Full name: Vincent Lejeune

Re: Test the combinational vision of your engine

Post by Vinvin »

Eelco de Groot wrote: ↑Tue Oct 16, 2018 2:30 pm
MikeGL wrote: ↑Tue Oct 16, 2018 12:37 pm I checked with many engines and it seems both moves are almost having equal eval due to
Qf4 move having the possibility to transpose with Rxd7! on its next move too.
The Qf4 PV actually shows Rxd7 on its next move.
Ugh, I had not even noticed that Qf4 is the second move in the Mate in 13 PVs also in Dann's PV so the possibility for a transposition is very high. But maybe not a perfect transposition in that case it would just be a matter of move ordering which move gets searched first. According to Kaissa, 1. Qf4 is # in 16 moves maybe it missed something but it already knew the M13 here in the hash table. So after 1. Qf4:
1r2kb1r/1pRb1ppp/4p3/q2pP1B1/p4Q2/P2B4/1P3PPP/2R3K1 b k -

Code: Select all

1r2kb1r/1pRb1ppp/4p3/q2pP1B1/p4Q2/P2B4/1P3PPP/2R3K1 b k -

Engine: Kaissa IV (512 MB)
by T. Romstad, M. Costalba, J. Kiiski, G. Linscott

...

79/33  719:01 +M16     1...Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 Rc8 
                       5.Bd6 Rd8 6.Rxc6 bxc6 7.Bc5 d4 8.Qg5 Rd7 
                       9.Qxg7 Rd5 10.Qxh8+ Kd7 11.Qf8 Rxc5 
                       12.Qxc5 f5 13.exf6 Kc7 14.f7 Kb7 (112.524.830.831) 2608 

best move: Bf8-e7 time: 719:01.500 min  n/s: 2.608.273  nodes: 112.524.830.831
When I was checking the line after 1...Be7 2.Bxe7 Bc6 3.Bd6 Qxc7 4.Bxc7 O-O, I found a weakness in Stockfish, unable to find quickly the sacrifice to mate : Bxf7+!

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1r3rk1/1pB2ppp/2b1p3/3pP3/p4Q2/P2B4/1P3PPP/2R3K1 w - - 1 5
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