Why? PV2 is doing more work.
Why is this so difficult?
Moderator: Ras
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Werewolf
- Posts: 2056
- Joined: Thu Sep 18, 2008 10:24 pm
Re: Why is this so difficult?
. Normal mode solutions?
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Werewolf
- Posts: 2056
- Joined: Thu Sep 18, 2008 10:24 pm
Re: Why is this so difficult?
The problem is Rad1 is a good move, maybe winning, and is easy to find.Jouni wrote: ↑Thu Sep 21, 2023 7:48 am [d]1r1q1rk1/1p2b2p/pN6/P1pP1bp1/5p2/2B2Q2/1P4PP/R4RK1 w - - 0 1 Best move 1.g4 .No engine I tried solved in reasonable time!
Analysis by Stockfish dev-20230911-3f7fb5ac:
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1.Rad1 Bd6 2.Qh5 Qe8 3.Qxg5+ Qg6 4.Qxg6+ hxg6 5.Nc4 Rbd8 6.Nxd6 Rxd6 7.Rxf4 Bc2 8.Rxf8+ Kxf8 9.Be5 Rd7 10.Rd2 Ba4 11.Bf4 Ke8 12.Be3 Re7 13.Bxc5 Re5 14.Rd3 Kd7 15.b3 Bb5 16.Rd2 g5 17.Kf2 Kc7 18.h3 Kd7 19.Kg3 Kc7 20.Kf3 Be8 21.b4 Kd7 22.d6 Ke6 23.Kg4 Kd7 24.Rf2 Ke6 25.Rf8 Kd5 26.Kg3 Bd7 27.Rg8 Kc6 28.Rg7 Rd5 29.Kf3 Rd3+ 30.Ke2 Rd5 31.g4 Re5+ 32.Kf2 Rd5 33.Re7
+- (2.93) Depth: 53/77 00:26:32 5675mN, tb=199052
The SF Cluster at Chessify @ 512 Cores finds this in 1 second on PV=1 though.
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Uri Blass
- Posts: 10941
- Joined: Thu Mar 09, 2006 12:37 am
- Location: Tel-Aviv Israel
Re: Why is this so difficult?
I see that they use UHO book and stockfish15.1Jouni wrote: ↑Fri Sep 22, 2023 2:37 pm Sure there is a test https://github.com/official-stockfish/S ... ng-multipv !
I expect the difference to be smaller without biased book and with a newer version of stockfish and with longer time control.
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gordonr
- Posts: 237
- Joined: Thu Aug 06, 2009 8:04 pm
- Location: UK
Re: Why is this so difficult?
I agree about Rad1 being a good move in addition to g4. I don't see one clearly winning and the other doesn't.Werewolf wrote: ↑Sat Sep 23, 2023 9:42 amThe problem is Rad1 is a good move, maybe winning, and is easy to find.Jouni wrote: ↑Thu Sep 21, 2023 7:48 am [d]1r1q1rk1/1p2b2p/pN6/P1pP1bp1/5p2/2B2Q2/1P4PP/R4RK1 w - - 0 1 Best move 1.g4 .No engine I tried solved in reasonable time!
Analysis by Stockfish dev-20230911-3f7fb5ac:
.
.
1.Rad1 Bd6 2.Qh5 Qe8 3.Qxg5+ Qg6 4.Qxg6+ hxg6 5.Nc4 Rbd8 6.Nxd6 Rxd6 7.Rxf4 Bc2 8.Rxf8+ Kxf8 9.Be5 Rd7 10.Rd2 Ba4 11.Bf4 Ke8 12.Be3 Re7 13.Bxc5 Re5 14.Rd3 Kd7 15.b3 Bb5 16.Rd2 g5 17.Kf2 Kc7 18.h3 Kd7 19.Kg3 Kc7 20.Kf3 Be8 21.b4 Kd7 22.d6 Ke6 23.Kg4 Kd7 24.Rf2 Ke6 25.Rf8 Kd5 26.Kg3 Bd7 27.Rg8 Kc6 28.Rg7 Rd5 29.Kf3 Rd3+ 30.Ke2 Rd5 31.g4 Re5+ 32.Kf2 Rd5 33.Re7
+- (2.93) Depth: 53/77 00:26:32 5675mN, tb=199052
The SF Cluster at Chessify @ 512 Cores finds this in 1 second on PV=1 though.
5950X @ 3.4Ghz / 30 threads / 16GB hash
MV=2, ran for 10 hrs, SF dev 11th Sept 2023:
78/102 9:33:35 568,754,498k 16,526k +3.84 Rad1 Bd6 Qh5 Qe8 Qxg5+ Qg6 Qxg6+ hxg6 Nc4 Be7 d6 Bg5 Rd5 Rbd8 Rxc5 Rfe8 Rc7 Rd7 h3 Re4 Ne5 Rxd6
78/106 9:33:35 568,754,498k 16,526k +4.49 g4 Bd7 d6 Bc6 dxe7 Qxe7 Qh3 Qe3+ Qxe3 fxe3 Rxf8+ Rxf8 Rf1 Rd8 Re1 Re8 Nc4 e2 Kf2 Re4 Nd6 Re6 Nf5
Then using SF dev 22nd Sept 2023 and MV = 1:
77/126 9:36:40 496,122,294k 14,339k +4.08 Rad1 Bd6 Qh5 Qe8 Qxg5+ Qg6 Qxg6+ hxg6 Nc4 Be7 d6 Bg5 Rd5 Bh6 Re1 Rbd8 Rxc5 Rf7 Rd5 Bf8 Bd4 Bc2
I then played g4, and after shorter analysis, I see:
57/90 1:22:44 69,048,020k 13,908k +4.65 Bd7 d6 Bc6 dxe7 Qxe7 Qd3 Qe3+ Qxe3 fxe3 Rxf8+ Rxf8 Rf1 Rd8 Re1 Re8 Nc4 e2 Kf2 Re4 Nd6 Rxg4
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Master Om
- Posts: 453
- Joined: Wed Nov 24, 2010 10:57 am
- Location: INDIA
Re: Why is this so difficult?
I used the Sergio NNUE 1240 binpeter wrote: ↑Fri Sep 22, 2023 11:01 pmThis one uses nn-46832cfbead3.nnue
1r1q1rk1/1p2b2p/pN6/P1pP1bp1/5p2/2B2Q2/1P4PP/R4RK1 w - - 0 1
Analysis by CfishNN 20230626 64 POPCNT:
30 threads of 16x3.5GHz CPU SyzygyProbeLimit=0.Code: Select all
23.Rae1 Bf6 24.h4 Bd4+ 25.Bxd4 cxd4 26.hxg5 Qxg5 27.Qxf4 Qxf4 28.Rxf4 d3 White is clearly better: +/- (1.36) Depth: 10/12 00:00:00 ... 23.Rad1 Bd6 24.Qh5 Qe8 25.Qxg5+ Qg6 26.Qxg6+ hxg6 27.Nc4 Rbd8 28.Nxd6 Rxd6 29.Be5 Rd7 30.Bxf4 Bg4 31.Rd2 Rdf7 32.Rdf2 Re7 33.h3 Bd7 34.Rc1 Re4 35.Bd6 Rxf2 36.Kxf2 Rb4 37.Be5 Re4 38.Bc3 g5 39.Kf3 Rf4+ 40.Ke3 Kf7 41.Be5 Rf5 42.Ke4 Rf2 43.Rxc5 Re2+ 44.Kd4 Rxb2 45.Rc7 White is clearly better: +- (2.08) Depth: 27/48 00:00:05 140MN 23.Rad1 Bd6 24.Qh5 Qe8 25.Qxg5+ Qg6 26.Qxg6+ hxg6 27.Nc4 Rbd8 28.Nxd6 Rxd6 29.Be5 Rd7 30.Bxf4 Bg4 31.Rd2 Rdf7 32.Rdf2 Re8 33.h3 Bd7 34.Rc1 Re4 35.Bd6 Rxf2 36.Kxf2 Rb4 37.Be5 Re4 38.Bc3 Kf7 39.g4 Ke7 40.Kf3 Ra4 41.Be5 Rxa5 42.Re1 Kd8 43.Kf4 c4 44.Rd1 Ba4 45.Rd4 Rb5 46.Kg5 Rxb2 47.Rxc4 White is clearly better: +- (2.23) Depth: 28/48 00:00:05 144MN 23.g4 White is clearly better: +- (2.31 ++) Depth: 29/54 00:00:06 182MN 23.g4 White is clearly better: +- (2.43 ++) Depth: 29/54 00:00:06 186MN 23.g4 White has a decisive advantage: +- (2.60 ++) Depth: 29/54 00:00:07 199MN 23.g4 Bg6 24.Rad1 Bd6 25.Rfe1 c4 26.Re6 Re8 27.Qf2 Rxe6 28.dxe6 Qe7 29.Kf1 Qxe6 30.Qd4 Bf8 31.Nxc4 Rd8 32.Qh8+ Kf7 33.Ne5+ Qxe5 34.Qxe5 Rxd1+ 35.Ke2 Rd6 36.Qxg5 Re6+ 37.Kf2 Bd6 38.Bd4 f3 39.Qh6 Be4 40.Qg7+ Ke8 41.Qg8+ Kd7 42.h4 Be7 43.Qf7 Bg6 44.Qg7 h5 45.Kxf3 White has a decisive advantage: +- (2.82) Depth: 29/54 00:00:07 224MN ... 23.g4 Bg6 24.Rad1 Bd6 25.Rfe1 c4 26.Re6 Re8 27.Qf2 Rxe6 28.dxe6 Qe7 29.Kf1 Qxe6 30.Qd4 Bf8 31.Nxc4 Rd8 32.Qh8+ Kf7 33.Ne5+ Qxe5 34.Qxe5 Rxd1+ 35.Ke2 Rd6 36.Qxg5 Re6+ 37.Kf2 Bd6 38.Bd4 Be4 39.h4 h6 40.Qg7+ Ke8 41.g5 hxg5 42.h5 g4 43.Qxg4 Kd7 44.Qg7+ Re7 45.Qg5 Re6 46.Qg4 Bb4 47.Bb6 Bd6 48.h6 Bd3 49.Qh3 Bh7 50.Qh5 Rg6 51.Qf5+ Ke7 52.Qe4+ Kf8 53.Qxb7 Rxh6 54.Qxa6 Be4 White is clearly winning: +- (4.47 ++) Depth: 38/60 00:01:39 2968MN
This was one of 2 about equally fast trials, both with NNUE Pure option, third one of that kind took 50 seconds, one with Hybrid eval was as fast as the best ones, one with Hybrid taking >2 minutes.
Edit: Dragon 3.2 gets it in about 1 minute with Personality Aggressive, regards
Always Expect the Unexpected
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Jouni
- Posts: 3715
- Joined: Wed Mar 08, 2006 8:15 pm
- Full name: Jouni Uski
Re: Why is this so difficult?
I only now noticed, that SF16 classical solves this fast!
Analysis by Stockfish 16:
...
1.g4 Bg6 2.Rad1 Bd6 3.Rfe1 c4 4.Nxc4 Rc8 5.Nxd6 Qxd6 6.Re6 Qd7 7.Rde1 Rfe8 8.R1e5 Rcd8 9.h4 Qa4 10.Rxg5 Rxe6 11.dxe6 Qc2 12.Qg2 Rd1+ 13.Kh2 Qxg2+ 14.Kxg2 Rd5 15.Kf3 Rxg5 16.hxg5 Bd3 17.Kxf4 Kf8 18.Bf6 Ke8
+/- (0.76) Depth: 32/58 00:00:13 134mN, tb=106
1.g4
+/- (0.77 ++) Depth: 33/41 00:00:14 145mN, tb=109
1.g4
+/- (0.81 ++) Depth: 33/41 00:00:15 150mN, tb=109
1.g4
+/- (0.86 ++) Depth: 33/60 00:00:16 160mN, tb=135
1.g4 Bg6 2.Rad1 Bd6 3.Rfe1 c4 4.Nxc4 Re8 5.Rxe8+ Bxe8 6.Nxd6 Qxd6 7.Qe4 Rc8 8.Qf5 Bd7 9.Qxg5+ Qg6 10.Qxg6+ hxg6 11.g5 Re8 12.Rd4 f3 13.Kf2 Re2+ 14.Kxf3 Rxh2 15.Rd1 Bf5 16.Re1 Kf7 17.Kf4 Rh4+ 18.Ke5 Ke7 19.Bd4 Kd7 20.Bc5 Bd3 21.Re3 Bc4 22.b4 Rg4 23.Kf6 Rf4+ 24.Kxg6
+/- (0.86) Depth: 33/60 00:00:16 162mN, tb=136
1.g4 Bg6
+/- (0.81 --) Depth: 34/52 00:00:17 168mN, tb=137
1.g4
+/- (0.85 ++) Depth: 34/56 00:00:18 180mN, tb=155
1.g4
+/- (0.91 ++) Depth: 34/64 00:00:20 201mN, tb=181
1.g4 Bg6 2.Rad1 Bd6 3.Rfe1 c4 4.Nxc4 Re8 5.Rxe8+ Bxe8 6.Nxd6 Qxd6 7.Qe4 Rc8 8.Qf5 Bd7 9.Qxg5+ Qg6 10.Qxg6+ hxg6 11.g5 Re8 12.Rd4 f3 13.Kf2 Re2+ 14.Kxf3 Rxh2 15.Rd1 Bf5 16.Re1 Kf7 17.Kf4 Rh4+ 18.Ke5 Ke7 19.Bd4 Kd7 20.Bc5 Bc2 21.Re2 Bd3 22.Re3 Bc2 23.Rf3 Re4+ 24.Kf6 Rg4 25.b4 Be4 26.Re3 Rh4 27.Ke5 Bc2
+/- (0.93) Depth: 34/64 00:00:21 206mN, tb=183
1.g4 Bg6 2.Rad1 Bd6 3.Rfe1 c4 4.Nxc4 Re8 5.Rxe8+ Bxe8 6.Nxd6 Qxd6 7.Qe4 Rc8 8.Qf5 Bd7 9.Qxg5+ Qg6 10.Qxg6+ hxg6 11.g5 Re8 12.Rd4 f3 13.Kf2 Re2+ 14.Kxf3 Rxh2 15.Rd1 Bf5 16.Re1 Kf7 17.Kf4 Rh4+ 18.Ke5 Ke7 19.Bd4 Kd7 20.Bc5 Bc2 21.Re2 Bd3 22.Re3 Bc2 23.Rf3 Re4+ 24.Kf6 Rc4 25.b4 Rg4 26.Kg7 Bf5 27.Rxf5 gxf5 28.Kf6 f4 29.Kf5 Rg3 30.Kxf4 Rg2 31.Kf5 Rg3 32.g6
+/- (0.95) Depth: 35/69 00:00:24 240mN, tb=357
1.g4 Bg6 2.Rad1 Bd6 3.Rfe1 c4 4.Nxc4 Re8 5.Rxe8+ Bxe8 6.Nxd6 Qxd6 7.Qe4 Rc8 8.Qf5 Bd7 9.Qxg5+ Qg6 10.Qxg6+ hxg6 11.g5 Re8 12.Rd4 f3 13.Kf2 Re2+ 14.Kxf3 Rxh2 15.Rd1 Bf5 16.Re1 Kf7 17.Kf4 Rh4+ 18.Ke5 Ke7 19.Bd4 Kd7 20.Bc5 Bc2 21.Re2 Bd3 22.Re3 Bb1 23.Rf3 Re4+ 24.Kf6 Rg4 25.b4 Rh4 26.Kg7 Bf5 27.Rf2 Rg4 28.Rh2 Be4 29.Kf6 Bxd5 30.Kxg6 Rg3 31.Rh8 Kc6
+/- (0.96) Depth: 36/66 00:00:26 259mN, tb=506
1.g4
+/- (1.00 ++) Depth: 37/65 00:00:30 303mN, tb=1356
1.g4 Bg6 2.Rad1 Bd6 3.Rfe1 c4 4.Nxc4 Re8 5.Rxe8+ Bxe8 6.Nxd6 Qxd6 7.Qe4 Qc5+ 8.Rd4 Rd8 9.d6 Bf7 10.Qxb7 Qe5 11.Rd3 Qe2 12.Qb6 Rd7 13.Qd4 Bb3 14.Qh8+ Kf7 15.Qxh7+ Ke8 16.Qh8+ Kf7 17.Qf6+ Ke8 18.Qe5+ Qxe5 19.Bxe5 Be6 20.Bf6 Bxg4 21.Bxg5 Rg7 22.h4 Rb7 23.Bxf4 Rb4 24.Re3+ Kd8 25.Be5 Rb5 26.Kf2 Kd7 27.Bc3 Kxd6
+/- (0.91) Depth: 37/65 00:00:31 311mN, tb=1474
1.g4
+/- (0.98 ++) Depth: 38/53 00:00:34 345mN, tb=1541
1.g4
+/- (1.02 ++) Depth: 38/53 00:00:34 351mN, tb=1544
1.g4 Bg6 2.Rad1 Bd6 3.Rfe1 c4 4.Nxc4 Re8 5.Rxe8+ Bxe8 6.Nxd6 Qxd6 7.Qe4 Rc8 8.Qf5 Bd7 9.Qxg5+ Qg6 10.Qxg6+ hxg6 11.g5 Re8 12.Rd4 f3 13.Kf2 Re2+ 14.Kxf3 Rxh2 15.Rf4 Bf5 16.Ke3 Kf8 17.Kd4 Rg2 18.Kc5 Rxg5 19.Kb6 Ke8 20.Kxb7 Bd3 21.Kc6 Bb5+ 22.Kd6 Rf5 23.Re4+ Kf8 24.Re6 Bd3 25.Kc5 g5
+/- (1.07) Depth: 38/62 00:00:37 381mN, tb=1770
1.g4 Bg6
+/- (0.99 --) Depth: 39/49 00:00:38 387mN, tb=1791
1.g4 Bg6
+/- (0.94 --) Depth: 39/58 00:00:38 393mN, tb=1853
1.g4 Bg6 2.Rad1 Bd6 3.Rfe1 c4 4.Nxc4 Re8 5.Rxe8+ Bxe8 6.Nxd6 Qxd6 7.Qe4 Rc8 8.Qf5 Bd7 9.Qxg5+ Qg6 10.Qxg6+ hxg6 11.g5 Rc5 12.Kf2 Kf7 13.Rd4 Bb5 14.Rxf4+ Ke8 15.Rd4 Rc4 16.Ke3 Ke7 17.Ke4 Rxd4+ 18.Bxd4 Bc4 19.Ke5 Bd3 20.Bc5+ Kf7 21.Kf4 Be2 22.Ke3 Bh5 23.h4 Bd1 24.Bb4 Bh5 25.Be1 Ke7 26.Bc3 Bd1 27.Bb4+ Kf7
+/- (0.94) Depth: 39/63 00:00:40 407mN, tb=1870
1.g4
+/- (1.00 ++) Depth: 40/57 00:00:51 532mN, tb=4054
1.g4 Bg6
+/- (0.90 --) Depth: 40/67 00:00:52 538mN, tb=4089
1.g4
+/- (0.97 ++) Depth: 40/67 00:00:54 556mN, tb=4116
1.g4
+/- (1.06 ++) Depth: 40/67 00:00:58 604mN, tb=4521
1.g4 Bg6 2.Rad1 Bd6 3.Rfe1 c4 4.Re6 Re8 5.Qf2 Rxe6 6.dxe6 Qe7 7.Kf1 Qxe6 8.Qd4 Bf8 9.Nxc4 Rd8 10.Qh8+ Kf7 11.Ne5+ Qxe5 12.Qxe5 Rxd1+ 13.Kf2 Be7 14.h4 gxh4 15.Qxf4+ Ke8 16.Qb8+ Rd8 17.Qxb7 Rd3 18.Qc8+ Kf7 19.Qc4+ Kf8 20.Bb4 Bxb4 21.Qxb4+ Kg7 22.Qe7+ Bf7 23.Qg5+ Bg6 24.b4 Rd1 25.Qe5+ Kh6
+/- (1.12) Depth: 40/75 00:01:01 633mN, tb=4699
Analysis by Stockfish 16:
...
1.g4 Bg6 2.Rad1 Bd6 3.Rfe1 c4 4.Nxc4 Rc8 5.Nxd6 Qxd6 6.Re6 Qd7 7.Rde1 Rfe8 8.R1e5 Rcd8 9.h4 Qa4 10.Rxg5 Rxe6 11.dxe6 Qc2 12.Qg2 Rd1+ 13.Kh2 Qxg2+ 14.Kxg2 Rd5 15.Kf3 Rxg5 16.hxg5 Bd3 17.Kxf4 Kf8 18.Bf6 Ke8
+/- (0.76) Depth: 32/58 00:00:13 134mN, tb=106
1.g4
+/- (0.77 ++) Depth: 33/41 00:00:14 145mN, tb=109
1.g4
+/- (0.81 ++) Depth: 33/41 00:00:15 150mN, tb=109
1.g4
+/- (0.86 ++) Depth: 33/60 00:00:16 160mN, tb=135
1.g4 Bg6 2.Rad1 Bd6 3.Rfe1 c4 4.Nxc4 Re8 5.Rxe8+ Bxe8 6.Nxd6 Qxd6 7.Qe4 Rc8 8.Qf5 Bd7 9.Qxg5+ Qg6 10.Qxg6+ hxg6 11.g5 Re8 12.Rd4 f3 13.Kf2 Re2+ 14.Kxf3 Rxh2 15.Rd1 Bf5 16.Re1 Kf7 17.Kf4 Rh4+ 18.Ke5 Ke7 19.Bd4 Kd7 20.Bc5 Bd3 21.Re3 Bc4 22.b4 Rg4 23.Kf6 Rf4+ 24.Kxg6
+/- (0.86) Depth: 33/60 00:00:16 162mN, tb=136
1.g4 Bg6
+/- (0.81 --) Depth: 34/52 00:00:17 168mN, tb=137
1.g4
+/- (0.85 ++) Depth: 34/56 00:00:18 180mN, tb=155
1.g4
+/- (0.91 ++) Depth: 34/64 00:00:20 201mN, tb=181
1.g4 Bg6 2.Rad1 Bd6 3.Rfe1 c4 4.Nxc4 Re8 5.Rxe8+ Bxe8 6.Nxd6 Qxd6 7.Qe4 Rc8 8.Qf5 Bd7 9.Qxg5+ Qg6 10.Qxg6+ hxg6 11.g5 Re8 12.Rd4 f3 13.Kf2 Re2+ 14.Kxf3 Rxh2 15.Rd1 Bf5 16.Re1 Kf7 17.Kf4 Rh4+ 18.Ke5 Ke7 19.Bd4 Kd7 20.Bc5 Bc2 21.Re2 Bd3 22.Re3 Bc2 23.Rf3 Re4+ 24.Kf6 Rg4 25.b4 Be4 26.Re3 Rh4 27.Ke5 Bc2
+/- (0.93) Depth: 34/64 00:00:21 206mN, tb=183
1.g4 Bg6 2.Rad1 Bd6 3.Rfe1 c4 4.Nxc4 Re8 5.Rxe8+ Bxe8 6.Nxd6 Qxd6 7.Qe4 Rc8 8.Qf5 Bd7 9.Qxg5+ Qg6 10.Qxg6+ hxg6 11.g5 Re8 12.Rd4 f3 13.Kf2 Re2+ 14.Kxf3 Rxh2 15.Rd1 Bf5 16.Re1 Kf7 17.Kf4 Rh4+ 18.Ke5 Ke7 19.Bd4 Kd7 20.Bc5 Bc2 21.Re2 Bd3 22.Re3 Bc2 23.Rf3 Re4+ 24.Kf6 Rc4 25.b4 Rg4 26.Kg7 Bf5 27.Rxf5 gxf5 28.Kf6 f4 29.Kf5 Rg3 30.Kxf4 Rg2 31.Kf5 Rg3 32.g6
+/- (0.95) Depth: 35/69 00:00:24 240mN, tb=357
1.g4 Bg6 2.Rad1 Bd6 3.Rfe1 c4 4.Nxc4 Re8 5.Rxe8+ Bxe8 6.Nxd6 Qxd6 7.Qe4 Rc8 8.Qf5 Bd7 9.Qxg5+ Qg6 10.Qxg6+ hxg6 11.g5 Re8 12.Rd4 f3 13.Kf2 Re2+ 14.Kxf3 Rxh2 15.Rd1 Bf5 16.Re1 Kf7 17.Kf4 Rh4+ 18.Ke5 Ke7 19.Bd4 Kd7 20.Bc5 Bc2 21.Re2 Bd3 22.Re3 Bb1 23.Rf3 Re4+ 24.Kf6 Rg4 25.b4 Rh4 26.Kg7 Bf5 27.Rf2 Rg4 28.Rh2 Be4 29.Kf6 Bxd5 30.Kxg6 Rg3 31.Rh8 Kc6
+/- (0.96) Depth: 36/66 00:00:26 259mN, tb=506
1.g4
+/- (1.00 ++) Depth: 37/65 00:00:30 303mN, tb=1356
1.g4 Bg6 2.Rad1 Bd6 3.Rfe1 c4 4.Nxc4 Re8 5.Rxe8+ Bxe8 6.Nxd6 Qxd6 7.Qe4 Qc5+ 8.Rd4 Rd8 9.d6 Bf7 10.Qxb7 Qe5 11.Rd3 Qe2 12.Qb6 Rd7 13.Qd4 Bb3 14.Qh8+ Kf7 15.Qxh7+ Ke8 16.Qh8+ Kf7 17.Qf6+ Ke8 18.Qe5+ Qxe5 19.Bxe5 Be6 20.Bf6 Bxg4 21.Bxg5 Rg7 22.h4 Rb7 23.Bxf4 Rb4 24.Re3+ Kd8 25.Be5 Rb5 26.Kf2 Kd7 27.Bc3 Kxd6
+/- (0.91) Depth: 37/65 00:00:31 311mN, tb=1474
1.g4
+/- (0.98 ++) Depth: 38/53 00:00:34 345mN, tb=1541
1.g4
+/- (1.02 ++) Depth: 38/53 00:00:34 351mN, tb=1544
1.g4 Bg6 2.Rad1 Bd6 3.Rfe1 c4 4.Nxc4 Re8 5.Rxe8+ Bxe8 6.Nxd6 Qxd6 7.Qe4 Rc8 8.Qf5 Bd7 9.Qxg5+ Qg6 10.Qxg6+ hxg6 11.g5 Re8 12.Rd4 f3 13.Kf2 Re2+ 14.Kxf3 Rxh2 15.Rf4 Bf5 16.Ke3 Kf8 17.Kd4 Rg2 18.Kc5 Rxg5 19.Kb6 Ke8 20.Kxb7 Bd3 21.Kc6 Bb5+ 22.Kd6 Rf5 23.Re4+ Kf8 24.Re6 Bd3 25.Kc5 g5
+/- (1.07) Depth: 38/62 00:00:37 381mN, tb=1770
1.g4 Bg6
+/- (0.99 --) Depth: 39/49 00:00:38 387mN, tb=1791
1.g4 Bg6
+/- (0.94 --) Depth: 39/58 00:00:38 393mN, tb=1853
1.g4 Bg6 2.Rad1 Bd6 3.Rfe1 c4 4.Nxc4 Re8 5.Rxe8+ Bxe8 6.Nxd6 Qxd6 7.Qe4 Rc8 8.Qf5 Bd7 9.Qxg5+ Qg6 10.Qxg6+ hxg6 11.g5 Rc5 12.Kf2 Kf7 13.Rd4 Bb5 14.Rxf4+ Ke8 15.Rd4 Rc4 16.Ke3 Ke7 17.Ke4 Rxd4+ 18.Bxd4 Bc4 19.Ke5 Bd3 20.Bc5+ Kf7 21.Kf4 Be2 22.Ke3 Bh5 23.h4 Bd1 24.Bb4 Bh5 25.Be1 Ke7 26.Bc3 Bd1 27.Bb4+ Kf7
+/- (0.94) Depth: 39/63 00:00:40 407mN, tb=1870
1.g4
+/- (1.00 ++) Depth: 40/57 00:00:51 532mN, tb=4054
1.g4 Bg6
+/- (0.90 --) Depth: 40/67 00:00:52 538mN, tb=4089
1.g4
+/- (0.97 ++) Depth: 40/67 00:00:54 556mN, tb=4116
1.g4
+/- (1.06 ++) Depth: 40/67 00:00:58 604mN, tb=4521
1.g4 Bg6 2.Rad1 Bd6 3.Rfe1 c4 4.Re6 Re8 5.Qf2 Rxe6 6.dxe6 Qe7 7.Kf1 Qxe6 8.Qd4 Bf8 9.Nxc4 Rd8 10.Qh8+ Kf7 11.Ne5+ Qxe5 12.Qxe5 Rxd1+ 13.Kf2 Be7 14.h4 gxh4 15.Qxf4+ Ke8 16.Qb8+ Rd8 17.Qxb7 Rd3 18.Qc8+ Kf7 19.Qc4+ Kf8 20.Bb4 Bxb4 21.Qxb4+ Kg7 22.Qe7+ Bf7 23.Qg5+ Bg6 24.b4 Rd1 25.Qe5+ Kh6
+/- (1.12) Depth: 40/75 00:01:01 633mN, tb=4699
Jouni
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Uri Blass
- Posts: 10941
- Joined: Thu Mar 09, 2006 12:37 am
- Location: Tel-Aviv Israel
Re: Why is this so difficult?
Because when you play perfect chess or almost perfect chess then the difference from more work is very small and I expect very little difference from being twice faster.
I see less than 50 elo difference between 1 core and 4 cores for stockfish in the full CCRL rating list
https://www.computerchess.org.uk/ccrl/4 ... +opponents
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Jouni
- Posts: 3715
- Joined: Wed Mar 08, 2006 8:15 pm
- Full name: Jouni Uski
Re: Why is this so difficult?
Obsidian 14.0 is no tactician, but surprises here:
...
1.Rad1 Bd6 2.Qh5 Qe8 3.Qxg5+ Qg6 4.Qxg6+ hxg6 5.Nc4 Rbd8 6.Nxd6 Rxd6 7.Be5 Rd7 8.Rxf4 Re8 9.Bc3 Re4 10.Rf2 Kf7 11.h3 Ke8 12.g4 Be6 13.Rf6 Bxd5 14.Rxg6 Re3 15.Re1 Rxe1+ 16.Bxe1 Be4 17.Rg8+ Kf7 18.Rh8 Rd1 19.Kf2 Rd3 20.Bc3 Kg6 21.Rg8+
+- (2.27) Depth: 32 00:00:09 49451kN, tb=22
1.g4 Bg6 2.Rad1 Bd6 3.Rfe1 Qc7 4.Re6 Rbd8 5.Nc4 Rfe8 6.Bf6 Bf7 7.Bxd8 Rxd8 8.Nxd6 Bxe6 9.Ne4 Bc8 10.d6 Qg7 11.Nxc5 Qxb2 12.d7 Bxd7 13.Nxd7 Re8 14.Qd3 Qe2 15.Nf6+ Kf7 16.Nxe8
+- (2.91) Depth: 33 00:00:22 118mN, tb=107
...
1.g4 Bd7 2.d6 Bc6 3.dxe7 Qxe7 4.Qd3 Qe6 5.Qc4 Qxc4 6.Nxc4 Bb5 7.b3 Rfd8 8.Rfd1 h6 9.Ne5 Bc6 10.Kf2 Rbc8 11.Rac1 Bd5 12.h4 gxh4 13.Ng6 Kf7 14.Nxh4 Bxb3 15.Rxd8 Rxd8 16.Kf3 Ba4 17.Kxf4 Rd1 18.Rxd1 Bxd1 19.Nf5 Kg6 20.Nd6 h5 21.gxh5+ Bxh5 22.Nxb7 Kf7 23.Nxc5 Be2 24.Ke5 Ke7 25.Kd5 Bf3+ 26.Kd4 Be2 27.Ne4 Bf3 28.Nd2 Bg4
+- (3.74) Depth: 42 00:02:41 785mN, tb=7468
...
1.Rad1 Bd6 2.Qh5 Qe8 3.Qxg5+ Qg6 4.Qxg6+ hxg6 5.Nc4 Rbd8 6.Nxd6 Rxd6 7.Be5 Rd7 8.Rxf4 Re8 9.Bc3 Re4 10.Rf2 Kf7 11.h3 Ke8 12.g4 Be6 13.Rf6 Bxd5 14.Rxg6 Re3 15.Re1 Rxe1+ 16.Bxe1 Be4 17.Rg8+ Kf7 18.Rh8 Rd1 19.Kf2 Rd3 20.Bc3 Kg6 21.Rg8+
+- (2.27) Depth: 32 00:00:09 49451kN, tb=22
1.g4 Bg6 2.Rad1 Bd6 3.Rfe1 Qc7 4.Re6 Rbd8 5.Nc4 Rfe8 6.Bf6 Bf7 7.Bxd8 Rxd8 8.Nxd6 Bxe6 9.Ne4 Bc8 10.d6 Qg7 11.Nxc5 Qxb2 12.d7 Bxd7 13.Nxd7 Re8 14.Qd3 Qe2 15.Nf6+ Kf7 16.Nxe8
+- (2.91) Depth: 33 00:00:22 118mN, tb=107
...
1.g4 Bd7 2.d6 Bc6 3.dxe7 Qxe7 4.Qd3 Qe6 5.Qc4 Qxc4 6.Nxc4 Bb5 7.b3 Rfd8 8.Rfd1 h6 9.Ne5 Bc6 10.Kf2 Rbc8 11.Rac1 Bd5 12.h4 gxh4 13.Ng6 Kf7 14.Nxh4 Bxb3 15.Rxd8 Rxd8 16.Kf3 Ba4 17.Kxf4 Rd1 18.Rxd1 Bxd1 19.Nf5 Kg6 20.Nd6 h5 21.gxh5+ Bxh5 22.Nxb7 Kf7 23.Nxc5 Be2 24.Ke5 Ke7 25.Kd5 Bf3+ 26.Kd4 Be2 27.Ne4 Bf3 28.Nd2 Bg4
+- (3.74) Depth: 42 00:02:41 785mN, tb=7468
Jouni
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acase
- Posts: 997
- Joined: Wed Mar 15, 2006 1:14 am
- Location: Columbus, Ohio USA
- Full name: Andrew R Case
Re: Why is this so difficult?
It looks like Rae1 wins and Nc4 also wins here to a lesser extent (in addition to Rad1), but g4 is probably the best move.
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acase
- Posts: 997
- Joined: Wed Mar 15, 2006 1:14 am
- Location: Columbus, Ohio USA
- Full name: Andrew R Case
Re: Why is this so difficult?
It looks like Obsidian 14.01 finds g4! rather easily taking 2 seconds...even if it struggles with the 3 move mate. 
Code: Select all
FEN: 1r1q1rk1/1p2b2p/pN6/P1pP1bp1/5p2/2B2Q2/1P4PP/R4RK1 w - - 0 1
Obsidian_dev14.01SE_AVX2:
1 00:00 508 170k +1.66 1.Ra1-e1
2 00:00 1k 386k +2.27 1.Ra1-e1 c5-c4
3 00:00 23k 4,581k +1.92 1.Bc3-e5 c5-c4 2.Be5xb8
4 00:00 50k 8,368k +1.13 1.Ra1-d1 Be7-d6 2.Nb6-c4 g5-g4
5 00:00 77k 11,027k +1.49 1.Ra1-e1 Be7-d6 2.Nb6-c4
6 00:00 80k 11,451k +1.71 1.Ra1-e1 Be7-d6 2.Nb6-c4 g5-g4
7 00:00 126k 13,983k +1.28 1.Ra1-e1 Be7-f6 2.h2-h4 Bf6-d4+ 3.Bc3xd4 c5xd4 4.h4xg5 Qd8xg5 5.Qf3xf4
8 00:00 197k 17,935k +1.29 1.Ra1-d1 Be7-d6 2.Nb6-c4 g5-g4 3.Qf3-f2 f4-f3
9 00:00 357k 23,812k +1.28 1.Ra1-d1 Be7-d6 2.Nb6-c4 g5-g4 3.Qf3-f2 f4-f3 4.Qf2-e3 Rf8-f7
10 00:00 497k 26,148k +1.54 1.Ra1-e1 c5-c4 2.Nb6xc4 Qd8-c7 3.d5-d6 Qc7-c5+ 4.Qf3-f2
11 00:00 1,196k 33,236k +1.49 1.Ra1-d1 Be7-d6 2.Qf3-h5 Rf8-f7 3.Nb6-c4 Bf5-g6 4.Qh5-f3 Qd8-f8 5.Rf1-e1 Rb8-d8
12 00:00 1,930k 35,747k +1.42 1.Ra1-d1 Rf8-f7 2.Rf1-e1 Qd8-f8 3.d5-d6 Be7xd6 4.Qf3-h5 Bf5-g6 5.Qh5xg5 f4-f3 6.Re1-e6
13 00:00 2,651k 37,877k +1.51 1.Ra1-d1 Be7-d6 2.Qf3-h5 Bf5-g6 3.Qh5-h6 Rf8-f7 4.Rf1-e1 Bd6-f8 5.Qh6-h3 c5-c4 6.d5-d6 Bf8xd6 7.Rd1-d5 Rf7-e7 8.Re1-f1 Qd8-c7
14 00:00 2,855k 38,579k +1.60 1.Ra1-d1 Be7-d6 2.Qf3-h5 Qd8-e8 3.Qh5xg5+ Qe8-g6 4.Qg5xg6+ h7xg6 5.Nb6-c4 Rb8-d8 6.Nc4xd6 Rd8xd6 7.Bc3-e5 Rd6-d7
15 00:00 3,441k 38,240k +1.75 1.Ra1-d1 Be7-d6 2.Qf3-h5 Bf5-g6 3.Qh5-h6 Rf8-f7 4.Rf1-e1 Bd6-f8 5.Qh6-h3 Bg6-f5 6.Qh3-h5 Bf5-c2 7.Rd1-d2 Bc2-g6 8.Qh5-d1 f4-f3 9.g2xf3
16 00:00 6,041k 37,760k +1.65 1.Ra1-d1 Be7-d6 2.Qf3-h5 Qd8-e8 3.Qh5xg5+ Qe8-g6 4.Qg5xg6+ h7xg6 5.Nb6-c4 Rb8-d8 6.Nc4xd6 Rd8xd6 7.Bc3-e5 Rd6-d7 8.Be5xf4 Bf5-g4 9.Rd1-d2 Rd7-f7 10.Rd2-f2 Bg4-d7 11.Bf4-d6 Rf7xf2 12.Rf1xf2 Rf8xf2 13.Kg1xf2
17 00:00 8,061k 37,319k +1.66 1.Ra1-d1 Be7-d6 2.Qf3-h5 Bf5-g6 3.Qh5-h3 Rf8-f7 4.Nb6-c4 Bg6-f5 5.Qh3-h6 Bd6-f8 6.Qh6-h5 Bf8-g7 7.Nc4-e5 Bg7xe5 8.Bc3xe5 Bf5-g6 9.Qh5-f3 Rb8-a8
18 00:00 10,402k 37,691k +1.83 1.Ra1-d1 Be7-d6 2.Qf3-h5 Bf5-g6 3.Qh5-h3 Rf8-f7 4.Nb6-c4 Qd8-f8 5.Nc4xd6 Qf8xd6 6.Qh3-h6 Rb8-e8 7.Qh6xg5 Re8-e3 8.Rd1-d2 Rf7-f5 9.Qg5-h6
19 00:00 15,019k 36,544k +1.77 1.Ra1-d1 Be7-d6 2.Qf3-h5 Qd8-e8 3.Qh5xg5+ Qe8-g6 4.Qg5xg6+ h7xg6 5.Nb6-c4 Rb8-d8 6.Nc4xd6 Rd8xd6 7.Bc3-e5 Rd6-d8 8.Rf1xf4 Bf5-c2 9.Rd1-d2 Rf8xf4 10.Be5xf4 Bc2-f5 11.h2-h3 Rd8-e8 12.Bf4-d6 Re8-e3 13.Bd6xc5
20 00:00 17,052k 36,051k +1.76 1.Ra1-d1 Be7-d6 2.Qf3-h5 Qd8-e8 3.Qh5xg5+ Qe8-g6 4.Qg5xg6+ h7xg6 5.Nb6-c4 Rb8-d8 6.Nc4xd6 Rd8xd6 7.Bc3-e5 Rd6-d8 8.Rf1xf4 Rf8-e8 9.Be5-c7 Rd8-d7 10.d5-d6 Re8-e2 11.Rf4-f2 Re2xf2 12.Kg1xf2 Rd7-f7 13.Kf2-g3 Bf5-d7 14.Rd1-e1 Rf7-f5 15.h2-h4 c5-c4 16.Re1-e7 Rf5-f7 17.Re7-e4 Rf7-f1 18.Re4xc4 Rf1-d1 19.Kg3-f4
21 00:00 19,669k 35,828k +1.81 1.Ra1-d1 Be7-d6 2.Qf3-h5 Qd8-e8 3.Qh5xg5+ Qe8-g6 4.Qg5xg6+ h7xg6 5.Nb6-c4 Rb8-d8 6.Nc4xd6 Rd8xd6 7.Bc3-e5 Rd6-d8 8.Rf1xf4 Bf5-c2 9.Rd1-d2 Rf8xf4 10.Be5xf4 Bc2-f5 11.Kg1-f2 Rd8-e8 12.Kf2-f3 Kg8-f7 13.Bf4-d6 c5-c4 14.Rd2-d4
22 00:00 24,854k 34,713k +1.83 1.Ra1-d1 Be7-d6 2.Qf3-h5 Bf5-g6 3.Qh5-h3 Bg6-f5 4.Qh3-h6 Rf8-f7 5.Rf1-e1 f4-f3 6.g2xf3 Bd6-f4 7.d5-d6 Qd8-f8 8.Qh6xf8+ Kg8xf8 9.Bc3-e5 Rb8-d8 10.Be5xf4 g5xf4 11.Kg1-f2 Rf7-f6 12.Re1-e5 Bf5-e6 13.d6-d7 Rf6-h6 14.h2-h4
23 00:00 33,660k 33,932k +1.84 1.Ra1-d1 Be7-d6 2.Qf3-h5 Qd8-e8 3.Qh5xg5+ Qe8-g6 4.Qg5xg6+ h7xg6 5.Nb6-c4 Rb8-d8 6.Nc4xd6 Rd8xd6 7.Bc3-e5 Rd6-d7 8.Rf1xf4 Rf8-e8 9.Be5-c3 Re8-e4 10.Rf4-f2 Rd7-d6 11.h2-h3 Re4-e3 12.Rf2-d2 Kg8-f7 13.Kg1-f2 Re3-e7 14.g2-g4 Bf5-d7 15.Kf2-g3 Re7-e3+ 16.Kg3-f4 Re3xh3 17.Rd1-f1 Kf7-e8 18.Rf1-e1+ Ke8-f7 19.Kf4-g5
24 00:01 58,689k 32,194k +1.59 1.Ra1-d1 Be7-d6 2.Qf3-h5 Qd8-e8 3.Qh5xg5+ Qe8-g6 4.Qg5xg6+ h7xg6 5.Nb6-c4 Rb8-d8 6.Nc4xd6 Rd8xd6 7.Bc3-e5 Rd6-d7 8.Rf1xf4 Rf8-e8 9.Be5-c3 Re8-e4 10.Rf4-f2 Kg8-f7 11.h2-h3 Kf7-e8 12.g2-g4 Bf5-e6 13.Rf2-f6 Be6xd5 14.Rf6xg6 Re4-e3 15.Rd1-e1 Re3xe1+ 16.Bc3xe1 Bd5-e4 17.Rg6-g5 Rd7-d5
25 00:02 78,358k 31,431k +2.00 1.g2-g4 Bf5-g6 2.Ra1-d1 Be7-d6 3.Rf1-e1 c5-c4 4.Re1-e6 Rf8-e8 5.Qf3-f2 Rb8-c8 6.Re6xe8+ Qd8xe8 7.Rd1-e1 Qe8-f8 8.Nb6xc8 Qf8xc8 9.h2-h3 Qc8-c7 10.Kg1-g2 Bd6-c5 11.Qf2-f3 Bc5-d6 12.Re1-e6 Bg6-f7 13.Re6-f6 Qc7-e7 14.h3-h4 g5xh4 15.Kg2-h3
26 00:03 100,861k 31,120k +1.87 1.g2-g4 Bf5-g6 2.Ra1-d1 Be7-d6 3.Rf1-e1 c5-c4 4.Re1-e6 Rf8-e8 5.Qf3-f2 Rb8-c8 6.Re6xe8+ Qd8xe8 7.Rd1-e1 Qe8-d8 8.Nb6xc8 Qd8xc8 9.h2-h3 Qc8-c5 10.Qf2xc5 Bd6xc5+ 11.Kg1-g2 Bg6-c2 12.Re1-e6 Kg8-f7 13.h3-h4 g5xh4 14.Re6-f6+ Kf7-e7 15.Rf6xf4 Ke7-d6 16.Rf4xc4 Kd6xd5 17.Rc4-f4 Bc5-d6 18.Rf4-f7 Kd5-e6 19.Rf7-f6+ Ke6-d5 20.Rf6-h6 Bc2-e4+ 21.Kg2-h3 Bd6-g3 22.Bc3-f6 Bg3-c7 23.Kh3xh4
27 00:03 105,348k 31,122k +1.90 1.g2-g4 Bf5-g6 2.Ra1-d1 Be7-d6 3.Rf1-e1 Rf8-e8 4.Re1-e6 c5-c4 5.Qf3-f2 Rb8-c8 6.Re6xe8+ Qd8xe8 7.Rd1-e1 Qe8-f8 8.Nb6xc8 Qf8xc8 9.h2-h3 Qc8-c5 10.Qf2xc5 Bd6xc5+ 11.Kg1-g2 Kg8-f7 12.Re1-e6 Bg6-c2 13.h3-h4 g5xh4 14.Re6-f6+ Kf7-e7 15.Rf6xf4 Bc2-d3 16.Bc3-e1 Ke7-d6 17.Rf4-f7 Kd6xd5 18.Rf7xb7 Kd5-c6 19.Rb7-b8 Kc6-c7 20.Rb8-g8 Kc7-c6 21.Be1xh4 Bc5-b4 22.Bh4-d8 Kc6-b5 23.Kg2-f3 Kb5-a4 24.Bd8-f6
28 00:04 132,375k 30,799k +1.82 1.g2-g4 Bf5-g6 2.Ra1-d1 Be7-d6 3.Rf1-e1 c5-c4 4.Re1-e6 Rf8-e8 5.Qf3-f2 Rb8-c8 6.Re6xe8+ Qd8xe8 7.Rd1-e1 Qe8-f8 8.Nb6xc8 Qf8xc8 9.h2-h3 Qc8-c5 10.Qf2xc5 Bd6xc5+ 11.Kg1-g2 Kg8-f7 12.Re1-e5 Bg6-c2 13.d5-d6 Bc5xd6 14.Re5xg5 Bc2-e4+ 15.Kg2-f2 Bd6-b8 16.Bc3-d4 Bb8-d6 17.Rg5-h5 Kf7-g6 18.Bd4-c5 Bd6-b8 19.h3-h4 Bb8-c7 20.Kf2-e2 Bc7xa5 21.Rh5-e5 Be4-c6 22.h4-h5+ Kg6-f6 23.Re5-f5+ Kf6-e6 24.Rf5xf4 c4-c3 25.b2xc3 Ba5xc3 26.Ke2-e3
29 00:04 139,384k 30,756k +2.01 1.g2-g4 Bf5-g6 2.Ra1-d1 Be7-d6 3.Rf1-e1 Rf8-e8 4.Re1-e6 c5-c4 5.Qf3-f2 Rb8-c8 6.Re6xe8+ Qd8xe8 7.Rd1-e1 Qe8-d8 8.Nb6xc8 Qd8xc8 9.h2-h3 Qc8-c5 10.Qf2xc5 Bd6xc5+ 11.Kg1-g2 Bg6-c2 12.Re1-e5 Kg8-f7 13.d5-d6 Bc5xd6 14.Re5xg5 Bc2-e4+ 15.Kg2-f2 Bd6-b8 16.Bc3-d4 Bb8-d6 17.Rg5-h5 Bd6-e7 18.Rh5-e5 Be7-h4+ 19.Kf2-g1 Be4-d3 20.Re5-h5 Bh4-e7 21.Bd4-c3 Be7-d6 22.Kg1-f2 Bd3-e4 23.Kf2-e2 Kf7-e6 24.Rh5-g5 Be4-d5 25.Bc3-d4 Bd5-e4 26.h3-h4 Be4-d5 27.Ke2-e1 Bd5-e4 28.Ke1-f2
30 00:06 196,085k 30,186k +2.14 1.g2-g4 Bf5-g6 2.Ra1-d1 Be7-d6 3.Rf1-e1 Qd8-c7 4.Re1-e6 Rb8-d8 5.Nb6-c4 Rf8-e8 6.Bc3-f6 Bg6-f7 7.Bf6xd8 Re8xd8 8.Re6xd6 Rd8xd6 9.Nc4xd6 Qc7xd6 10.Qf3-e2 h7-h6 11.Rd1-d2 Kg8-f8 12.Qe2-d3 Kf8-g7 13.Qd3-e4 Kg7-f8 14.h2-h3 Kf8-g8 15.Rd2-e2 Qd6xd5 16.Qe4xd5 Bf7xd5 17.Re2-e5
31 00:08 246,661k 30,110k +2.53 1.g2-g4 Bf5-g6 2.Ra1-d1 Be7-d6 3.Rf1-e1 Qd8-c7 4.Re1-e6 Rb8-d8 5.Nb6-c4 Rf8-e8 6.Bc3-f6 Bg6-f7 7.Bf6xd8 Re8xd8 8.Re6xd6 Rd8xd6 9.Nc4xd6 Qc7xd6 10.Qf3-e4 h7-h6 11.Kg1-f2 Kg8-g7 12.Rd1-d2 Bf7-g8 13.Qe4-f5 Bg8-f7 14.h2-h3 Bf7-g6 15.Qf5-e6 Qd6xe6 16.d5xe6 Kg7-f6 17.Rd2-d7 Bg6-e4 18.e6-e7 Kf6-f7 19.e7-e8Q+
32 00:11 351,236k 30,253k +2.81 1.g2-g4 Bf5-g6 2.Ra1-d1 Be7-d6 3.Rf1-e1 Rf8-e8 4.Re1-e6 c5-c4 5.Qf3-f2 Re8xe6 6.d5xe6 Qd8-e7 7.Kg1-f1 Qe7xe6 8.Qf2-d4 Bd6-f8 9.Nb6xc4 Rb8-d8 10.Qd4-h8+ Kg8-f7 11.Nc4-e5+ Qe6xe5 12.Qh8xe5 Rd8xd1+ 13.Kf1-e2 Rd1-d6 14.Qe5xg5 Rd6-e6+ 15.Ke2-f2 Bf8-d6 16.Bc3-d4 Bg6-d3 17.h2-h4 Re6-e2+ 18.Kf2-f3 Re2-e6 19.h4-h5 Kf7-e8 20.Bd4-c5 Bd3-e2+ 21.Kf3-f2 Bd6xc5+ 22.Qg5xc5
33 00:14 433,141k 30,281k +2.97 1.g2-g4 Bf5-g6 2.Ra1-d1 Be7-d6 3.Rf1-e1 Rf8-e8 4.Re1-e6 c5-c4 5.Qf3-f2 Re8xe6 6.d5xe6 Qd8-e7 7.Kg1-f1 Qe7xe6 8.Qf2-d4 Bd6-f8 9.Nb6xc4 Rb8-d8 10.Qd4-h8+ Kg8-f7 11.Nc4-e5+ Qe6xe5 12.Qh8xe5 Rd8xd1+ 13.Kf1-e2 Rd1-d6 14.Qe5xg5 Rd6-e6+ 15.Ke2-f2 Bf8-d6 16.Bc3-d4 f4-f3 17.h2-h4 Bg6-e4 18.Qg5-g7+ Kf7-e8 19.Qg7-g8+ Ke8-d7 20.Qg8-f7+ Re6-e7 21.Qf7-c4 Re7-e6 22.g4-g5 Re6-e7 23.Bd4-e3 Re7-e5 24.h4-h5 Be4-d5 25.Qc4-g4+
34 00:18 560,735k 29,923k +3.13 1.g2-g4 Bf5-g6 2.Ra1-d1 Be7-d6 3.Rf1-e1 c5-c4 4.Re1-e6 Rf8-e8 5.Qf3-f2 Re8xe6 6.d5xe6 Qd8-e7 7.Kg1-f1 Qe7xe6 8.Qf2-d4 Bd6-f8 9.Nb6xc4 Rb8-d8 10.Qd4-h8+ Kg8-f7 11.Nc4-e5+ Qe6xe5 12.Qh8xe5 Rd8xd1+ 13.Kf1-e2 Rd1-d6 14.Qe5xg5 Rd6-e6+ 15.Ke2-f2 Bf8-d6 16.Bc3-d4 f4-f3 17.h2-h4 Kf7-e8 18.h4-h5 Bd6-e7 19.Qg5-f4 Bg6-e4 20.g4-g5 Be4-c6 21.Bd4-e3 Re6-e4 22.Qf4-c7 Re4-b4 23.b2-b3 Rb4-e4 24.Qc7-c8+ Be7-d8 25.g5-g6 h7xg6 26.h5-h6
35 00:21 633,893k 29,735k +3.17 1.g2-g4 Bf5-g6 2.Ra1-d1 Be7-d6 3.Rf1-e1 c5-c4 4.Re1-e6 Rf8-e8 5.Qf3-f2 Re8xe6 6.d5xe6 Qd8-e7 7.Kg1-f1 Qe7xe6 8.Qf2-d4 Bd6-f8 9.Nb6xc4 Rb8-d8 10.Qd4-h8+ Kg8-f7 11.Nc4-e5+ Qe6xe5 12.Qh8xe5 Rd8xd1+ 13.Kf1-e2 Rd1-d6 14.Qe5xg5 Rd6-e6+ 15.Ke2-f2 Bf8-d6 16.Bc3-d4 Bg6-d3 17.h2-h4 h7-h6 18.Qg5-d5 Bd6-e7 19.Qd5-h5+ Kf7-f8 20.Bd4-c5 Bd3-e4 21.Bc5xe7+ Kf8xe7 22.Qh5-c5+ Ke7-d7 23.h4-h5 f4-f3 24.g4-g5 h6xg5 25.h5-h6 Re6xh6 26.Qc5-d4+ Kd7-c8 27.Qd4xe4
35 00:27 807,979k 29,556k +3.27 1.g2-g4