I do not know what makes them slow.
Not all positions will be slow with all engines.
Try searching to depth 36 the 100 positions in the attached file.
Some engines search these positions slowly
Moderators: hgm, Rebel, chrisw
-
Dann Corbit
- Posts: 12541
- Joined: Wed Mar 08, 2006 8:57 pm
- Location: Redmond, WA USA
Some engines search these positions slowly
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.
But sharing ideas is an even greater virtue. We have another word for this. It is called teaching.
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Uri Blass
- Posts: 10297
- Joined: Thu Mar 09, 2006 12:37 am
- Location: Tel-Aviv Israel
Re: Some engines search these positions slowly
I think many engines will practically never get depth 36 in many positions and stockfish get depth 36 in a few minutes at least in the first 2 positions.
position number 3 is harder but stockfish still can finish depth 32 with less than 1,000,000,000 nodes on my hardware(I used 3 cores and 1024 mbytes and it may not be deterministic).
[d]3q1rk1/3bppb1/3p1np1/ppr1n1Bp/3NP1PP/1BN2P2/PPPQ4/1K1R3R w - - 0 1
Stockfish_18091012_x64_modern:
1/1 00:00 425 213k +0.56 1.Bxf6 exf6 2.gxh5 gxh5
2/2 00:00 554 277k +0.56 1.Bxf6 exf6
3/3 00:00 709 355k +0.60 1.gxh5 Nxh5 2.f4
4/4 00:00 1k 535k +0.20 1.gxh5 Nxh5 2.f4 b4
5/6 00:00 2k 624k +0.85 1.gxh5 a4 2.h6 axb3 3.hxg7 bxa2+ 4.Nxa2 Kxg7
6/7 00:00 3k 899k +0.85 1.gxh5 a4 2.h6 axb3 3.hxg7 bxa2+ 4.Nxa2
7/7 00:00 4k 1,019k +0.83 1.gxh5 Nxh5 2.Nd5 Re8 3.f4 Ng4 4.f5
8/8 00:00 10k 1,746k +0.85 1.Bxf6 Bxf6 2.gxh5 a4 3.Bd5 b4 4.hxg6 bxc3
9/12 00:00 31k 2,069k +1.11 1.Bxf6 exf6 2.gxh5 a4 3.h6 axb3 4.axb3 b4 5.hxg7 Kxg7
10/13 00:00 48k 2,088k +0.53 1.Bxf6 Bxf6 2.Nd5 e6 3.Nxf6+ Qxf6 4.gxh5 a4 5.f4 axb3 6.fxe5 bxa2+ 7.Ka1 Rxe5
11/19 00:00 111k 2,130k +0.67 1.Bxf6 Bxf6 2.gxh5 a4 3.Bd5 e6 4.hxg6 Nxg6 5.f4 Rxc3 6.Qxc3 exd5 7.h5 Nxf4
12/18 00:00 183k 2,284k +1.07 1.Bxf6 Bxf6 2.gxh5 a4 3.Bd5 e6 4.hxg6 exd5 5.gxf7+ Kxf7 6.Nxd5 Nc6 7.Nxc6 Bxc6 8.Nb4 Bb7
13/20 00:00 257k 2,334k +1.24 1.Bxf6 Bxf6 2.gxh5 a4 3.Bd5 e6 4.hxg6 Nxg6 5.a3 Rxc3 6.bxc3 exd5 7.exd5 Bxd4 8.Qxd4 Kh7 9.Rdg1
14/25 00:00 563k 2,671k +1.69 1.Bxf6 Bxf6 2.gxh5 a4 3.Bd5 e6 4.hxg6 Rxc3 5.gxf7+ Kxf7 6.Bxe6+ Bxe6 7.Qxc3 Nc4 8.h5 Bd7 9.h6 Rh8 10.h7 Qa8
15/25 00:00 876k 2,746k +1.86 1.Bxf6 Bxf6 2.gxh5 a4 3.Bd5 e6 4.hxg6 Rxc3 5.gxf7+ Kxf7 6.Bxe6+ Bxe6 7.Qxc3 Nc4 8.e5 Bxe5 9.f4 Bxd4 10.Qxd4 Ke8 11.h5
16/32 00:00 1,552k 2,817k +1.22 1.Bxf6 Bxf6 2.gxh5 a4 3.Bd5 e6 4.hxg6 exd5 5.h5 Bg5 6.f4 Nc4 7.Qg2 Bxf4 8.gxf7+ Kh8 9.Qg6 Ne5 10.Qxd6 Rxc3 11.bxc3 Rxf7
17/30 00:00 2,370k 2,901k +0.96 1.Bxf6 Bxf6 2.gxh5 a4 3.Bd5 e6 4.hxg6 exd5 5.h5 Bg5 6.f4 Nc4 7.Qg2 Bxf4 8.gxf7+ Kh8 9.Qg6 Qe7 10.Nde2 Qxf7 11.Nxf4 Qxf4 12.Nxd5 Rxd5 13.Rxd5
18/27 00:00 2,787k 2,936k +1.20 1.Bxf6 Bxf6 2.gxh5 a4 3.Bd5 e6 4.hxg6 exd5 5.gxf7+ Rxf7 6.Nxd5 Bg7 7.h5 Nc4 8.Qd3 Rxd5 9.exd5 Qf6 10.Rhg1 Ne5 11.Qe4 Nxf3 12.Qxf3 Qxf3
19/35 00:01 5,379k 2,967k +0.97 1.Bxf6 Bxf6 2.gxh5 a4 3.Bd5 e6 4.hxg6 exd5 5.gxf7+ Rxf7 6.Nxd5 Bg7 7.Rhg1 Rxd5 8.exd5 Qxh4 9.Qa5 Qf6 10.Ne6 Ng6 11.Nxg7 Rxg7 12.Qa8+ Nf8 13.Rh1 Rg2 14.Rdg1 Rxg1+ 15.Rxg1+ Kf7
20/35 00:01 5,884k 2,958k +1.09 1.Bxf6 Bxf6 2.gxh5 a4 3.Bd5 e6 4.hxg6 exd5 5.h5 Bg5 6.f4 Nc4 7.Qh2 Bh6 8.Nxd5 Rxd5 9.exd5 Qf6 10.Qh4 Qxf4 11.Qe7 Nd2+ 12.Rxd2 Qxd2 13.Qxd7 Qxd4
21/33 00:02 8,331k 2,975k +1.04 1.Bxf6 Bxf6 2.gxh5 a4 3.Bd5 e6 4.hxg6 exd5 5.gxf7+ Rxf7 6.Nxd5 Bg7 7.h5 Nc4 8.Qd3 Rxd5 9.exd5 Bxd4 10.Qxd4 Qf6 11.b3 Qxd4 12.Rxd4 axb3 13.axb3 Ne3 14.f4
22/33 00:04 12,577k 2,985k +1.11 1.Bxf6 Bxf6 2.gxh5 a4 3.Bd5 e6 4.hxg6 exd5 5.h5 Bg5 6.f4 Nc4 7.Qh2 Bh6 8.Nxd5 Rxd5 9.exd5 Qf6 10.Rhg1 Bxf4 11.Qf2 Ne3 12.Rd3 Ng4 13.Qe2 fxg6 14.Rxg4 Bxg4 15.Qxg4 Bg5 16.hxg6
23/38- 00:05 17,132k 2,971k +1.02 1.Bxf6 Bxf6
23/38- 00:06 18,472k 2,968k +0.93 1.Bxf6 Bxf6
23/38+ 00:06 20,071k 2,969k +1.02 1.Bxf6
23/39+ 00:07 21,263k 2,964k +1.20 1.Bxf6
23/40- 00:07 22,097k 2,955k +0.80 1.Bxf6 Bxf6
23/41 00:08 26,433k 2,955k +0.70 1.Bxf6 Bxf6 2.gxh5 a4 3.Bd5 e6 4.hxg6 exd5 5.h5 Bg5 6.f4 Nc4 7.Qd3 Bxf4 8.Nxd5 Bg5 9.Rdg1 Rxd5 10.exd5 Qf6 11.Ka1 fxg6 12.hxg6 Bf5 13.Qxf5 Qxf5 14.Nxf5 Rxf5 15.Rh5 Be3 16.Rxf5 Bxg1 17.Rf7 Be3
24/40- 00:11 34,867k 2,942k +0.61 1.Bxf6 Bxf6
24/40+ 00:12 35,530k 2,923k +0.70 1.Bxf6
24/40+ 00:12 35,712k 2,923k +0.83 1.Bxf6
24/40 00:12 36,842k 2,913k +0.90 1.Bxf6 Bxf6 2.gxh5 a4 3.Bd5 e6 4.hxg6 exd5 5.h5 Bg5 6.f4 Nc4 7.Qd3 Bxf4 8.Nxd5 Bg5 9.Rhg1 Ne5 10.Qe2 b4 11.Rdf1 fxg6 12.Rxf8+ Kxf8 13.hxg6 Rxd5 14.exd5 Kg7 15.Qh5 Bh6 16.Qh1
25/43- 00:14 42,538k 2,873k +0.82 1.Bxf6 Bxf6
25/43- 00:16 46,558k 2,884k +0.73 1.Bxf6 Bxf6
25/43- 00:19 56,824k 2,895k +0.60 1.Bxf6 Bxf6
25/44+ 00:20 58,999k 2,898k +0.71 1.Bxf6
25/44 00:24 69,294k 2,887k +0.48 1.Bxf6 Bxf6 2.gxh5 a4 3.Bd5 e6 4.hxg6 exd5 5.gxf7+ Rxf7 6.Rhg1+ Rg7 7.Nxd5 Nc4 8.Rxg7+ Bxg7 9.Qf4 Rxd5 10.exd5 Qf6 11.Qxf6 Bxf6 12.b3 axb3 13.axb3 Ne3 14.Rd3 Ng2 15.h5 Kh7
26/47- 00:31 89,884k 2,888k +0.39 1.Bxf6 Bxf6
26/47+ 00:32 94,642k 2,869k +0.48 1.Bxf6
26/47 00:33 95,169k 2,869k +0.51 1.Bxf6 Bxf6 2.gxh5 a4 3.Bd5 e6 4.hxg6 exd5 5.h5 Bg5 6.f4 Nc4 7.Qd3 Bxf4 8.Nxd5 Ne5 9.Qf1 Bg5 10.Qg2 Bg4 11.Rdg1 b4 12.Nxb4 Be3 13.gxf7+ Rxf7 14.Nbc6 Qg5 15.Nxe5 dxe5 16.Nf5 Bxg1
27/43- 00:37 106,794k 2,870k +0.42 1.Bxf6 Bxf6
27/46+ 00:41 118,951k 2,890k +0.51 1.Bxf6
27/46- 00:46 135,734k 2,901k +0.33 1.Bxf6 Bxf6
27/46+ 00:49 142,796k 2,904k +0.48 1.Bxf6
27/53 01:04 187,324k 2,920k +0.38 1.gxh5 Nxh5 2.Nd5 Re8 3.a3 Nc4 4.Qf2 Kh7 5.Rhe1 Bc8 6.c3 Qd7 7.Bc1 e6 8.Ne3 Ba6 9.f4 b4 10.cxb4 axb4 11.axb4 Rc7 12.Nec2 e5 13.fxe5 Nxe5 14.Rg1 Ng4
28/38+ 01:09 203,438k 2,919k +0.47 1.gxh5
28/38+ 01:11 208,175k 2,917k +0.56 1.gxh5
28/51+ 01:20 235,071k 2,903k +0.69 1.gxh5
28/51 01:24 244,029k 2,901k +0.65 1.gxh5 Nxh5 2.Nd5 Re8 3.a3 Nc4 4.Bxc4 bxc4 5.Ka2 Kh7 6.Be3 e6 7.Nc3 Rc8 8.Nde2 d5 9.Nf4 Nxf4 10.Bxf4 d4 11.e5 dxc3 12.Qxd7 Qxd7 13.Rxd7 cxb2 14.Kxb2 c3+ 15.Ka2 Red8 16.Rxd8 Rxd8 17.Kb3 Rc8 18.h5 a4+ 19.Kb4
29/42+ 01:27 254,600k 2,898k +0.73 1.gxh5
29/45+ 01:34 274,009k 2,892k +0.82 1.gxh5
29/47- 01:44 301,253k 2,887k +0.56 1.gxh5 Nxh5
29/47+ 01:47 309,454k 2,891k +0.75 1.gxh5
29/47 01:56 336,804k 2,889k +0.92 1.gxh5 Nxh5 2.Nd5 Re8 3.a3 Nc4 4.Qf2 Kh7 5.Rhe1 Bc8 6.f4 Bg4 7.Rd3 Qd7 8.f5 a4 9.fxg6+ fxg6 10.Ba2 Rf8 11.Qg1 e5 12.Ne2 Nf4 13.Nec3 Be6 14.Bxc4 Rxc4 15.Nb6 Qc6 16.Bxf4 exf4 17.Nxc4 Bxc4
30/53+ 02:22 409,628k 2,876k +1.01 1.Bxf6
30/53- 02:27 423,545k 2,874k +0.84 1.Bxf6 Bxf6
30/53+ 02:28 427,885k 2,875k +0.97 1.Bxf6
30/53- 02:39 458,728k 2,881k +0.71 1.Bxf6 Bxf6
30/53 02:46 478,394k 2,879k +0.65 1.Bxf6 Bxf6 2.gxh5 a4 3.Bd5 e6 4.hxg6 exd5 5.h5 Bg5 6.f4 Nc4 7.Qd3 Bxf4 8.Nxd5 Ne5 9.Qf1 Bg5 10.Qg2 Bg4 11.Rdf1 b4 12.Nxb4 a3 13.Nd3 Nxd3 14.Qxg4 Ne5 15.gxf7+ Rxf7 16.Qe6 Rcc7 17.Nf5 Qb8 18.b3 Kh7 19.Nxd6
31/43- 03:33 615,392k 2,883k +0.56 1.Bxf6 Bxf6
31/43- 03:41 640,112k 2,885k +0.47 1.Bxf6 Bxf6
31/43- 03:53 672,404k 2,885k +0.34 1.Bxf6 Bxf6
31/53+ 04:10 719,550k 2,872k +0.45 1.Bxf6
31/53+ 04:14 731,044k 2,871k +0.70 1.Bxf6
31/53 04:45 814,573k 2,856k +0.38 1.Bxf6 Bxf6 2.gxh5 a4 3.Bd5 e6 4.f4 Ng4 5.e5 dxe5 6.fxe5 Bxe5 7.Bf3 b4 8.Nce2 Nf2 9.hxg6 Nxd1 10.gxf7+ Rxf7 11.Nxe6 Nc3+ 12.Nxc3 bxc3 13.Qg2+ Rg7 14.Qxg7+ Bxg7 15.Nxd8 cxb2 16.Nb7 Rc3 17.Bd5+ Kh8 18.Nd6 a3 19.Rg1 Kh7 20.Rg5 Re3 21.Be4+ Kg8 22.Rg1 Kf8
32/50 05:36 962,019k 2,861k +0.34 1.gxh5 a4 2.Bxf6 Bxf6 3.Bd5 e6 4.hxg6 exd5 5.h5 Bg5 6.f4 Nc4 7.Qd3 Bxf4 8.Nxd5 Ne5 9.Qf1 Bg5 10.Qg2 Bg4 11.Rdf1 b4 12.Nxb4 fxg6 13.hxg6 Rxf1+ 14.Rxf1 Qe8 15.Nd3 Nxd3 16.Qxg4 Nf4 17.e5 Rxe5 18.Nf3
33/51+ 05:40 974,360k 2,861k +0.43 1.gxh5
33/58+ 06:10 1,060,674k 2,862k +0.52 1.Bxf6
33/59- 06:23 1,097,785k 2,864k +0.26 1.Bxf6 Bxf6
position number 3 is harder but stockfish still can finish depth 32 with less than 1,000,000,000 nodes on my hardware(I used 3 cores and 1024 mbytes and it may not be deterministic).
[d]3q1rk1/3bppb1/3p1np1/ppr1n1Bp/3NP1PP/1BN2P2/PPPQ4/1K1R3R w - - 0 1
Stockfish_18091012_x64_modern:
1/1 00:00 425 213k +0.56 1.Bxf6 exf6 2.gxh5 gxh5
2/2 00:00 554 277k +0.56 1.Bxf6 exf6
3/3 00:00 709 355k +0.60 1.gxh5 Nxh5 2.f4
4/4 00:00 1k 535k +0.20 1.gxh5 Nxh5 2.f4 b4
5/6 00:00 2k 624k +0.85 1.gxh5 a4 2.h6 axb3 3.hxg7 bxa2+ 4.Nxa2 Kxg7
6/7 00:00 3k 899k +0.85 1.gxh5 a4 2.h6 axb3 3.hxg7 bxa2+ 4.Nxa2
7/7 00:00 4k 1,019k +0.83 1.gxh5 Nxh5 2.Nd5 Re8 3.f4 Ng4 4.f5
8/8 00:00 10k 1,746k +0.85 1.Bxf6 Bxf6 2.gxh5 a4 3.Bd5 b4 4.hxg6 bxc3
9/12 00:00 31k 2,069k +1.11 1.Bxf6 exf6 2.gxh5 a4 3.h6 axb3 4.axb3 b4 5.hxg7 Kxg7
10/13 00:00 48k 2,088k +0.53 1.Bxf6 Bxf6 2.Nd5 e6 3.Nxf6+ Qxf6 4.gxh5 a4 5.f4 axb3 6.fxe5 bxa2+ 7.Ka1 Rxe5
11/19 00:00 111k 2,130k +0.67 1.Bxf6 Bxf6 2.gxh5 a4 3.Bd5 e6 4.hxg6 Nxg6 5.f4 Rxc3 6.Qxc3 exd5 7.h5 Nxf4
12/18 00:00 183k 2,284k +1.07 1.Bxf6 Bxf6 2.gxh5 a4 3.Bd5 e6 4.hxg6 exd5 5.gxf7+ Kxf7 6.Nxd5 Nc6 7.Nxc6 Bxc6 8.Nb4 Bb7
13/20 00:00 257k 2,334k +1.24 1.Bxf6 Bxf6 2.gxh5 a4 3.Bd5 e6 4.hxg6 Nxg6 5.a3 Rxc3 6.bxc3 exd5 7.exd5 Bxd4 8.Qxd4 Kh7 9.Rdg1
14/25 00:00 563k 2,671k +1.69 1.Bxf6 Bxf6 2.gxh5 a4 3.Bd5 e6 4.hxg6 Rxc3 5.gxf7+ Kxf7 6.Bxe6+ Bxe6 7.Qxc3 Nc4 8.h5 Bd7 9.h6 Rh8 10.h7 Qa8
15/25 00:00 876k 2,746k +1.86 1.Bxf6 Bxf6 2.gxh5 a4 3.Bd5 e6 4.hxg6 Rxc3 5.gxf7+ Kxf7 6.Bxe6+ Bxe6 7.Qxc3 Nc4 8.e5 Bxe5 9.f4 Bxd4 10.Qxd4 Ke8 11.h5
16/32 00:00 1,552k 2,817k +1.22 1.Bxf6 Bxf6 2.gxh5 a4 3.Bd5 e6 4.hxg6 exd5 5.h5 Bg5 6.f4 Nc4 7.Qg2 Bxf4 8.gxf7+ Kh8 9.Qg6 Ne5 10.Qxd6 Rxc3 11.bxc3 Rxf7
17/30 00:00 2,370k 2,901k +0.96 1.Bxf6 Bxf6 2.gxh5 a4 3.Bd5 e6 4.hxg6 exd5 5.h5 Bg5 6.f4 Nc4 7.Qg2 Bxf4 8.gxf7+ Kh8 9.Qg6 Qe7 10.Nde2 Qxf7 11.Nxf4 Qxf4 12.Nxd5 Rxd5 13.Rxd5
18/27 00:00 2,787k 2,936k +1.20 1.Bxf6 Bxf6 2.gxh5 a4 3.Bd5 e6 4.hxg6 exd5 5.gxf7+ Rxf7 6.Nxd5 Bg7 7.h5 Nc4 8.Qd3 Rxd5 9.exd5 Qf6 10.Rhg1 Ne5 11.Qe4 Nxf3 12.Qxf3 Qxf3
19/35 00:01 5,379k 2,967k +0.97 1.Bxf6 Bxf6 2.gxh5 a4 3.Bd5 e6 4.hxg6 exd5 5.gxf7+ Rxf7 6.Nxd5 Bg7 7.Rhg1 Rxd5 8.exd5 Qxh4 9.Qa5 Qf6 10.Ne6 Ng6 11.Nxg7 Rxg7 12.Qa8+ Nf8 13.Rh1 Rg2 14.Rdg1 Rxg1+ 15.Rxg1+ Kf7
20/35 00:01 5,884k 2,958k +1.09 1.Bxf6 Bxf6 2.gxh5 a4 3.Bd5 e6 4.hxg6 exd5 5.h5 Bg5 6.f4 Nc4 7.Qh2 Bh6 8.Nxd5 Rxd5 9.exd5 Qf6 10.Qh4 Qxf4 11.Qe7 Nd2+ 12.Rxd2 Qxd2 13.Qxd7 Qxd4
21/33 00:02 8,331k 2,975k +1.04 1.Bxf6 Bxf6 2.gxh5 a4 3.Bd5 e6 4.hxg6 exd5 5.gxf7+ Rxf7 6.Nxd5 Bg7 7.h5 Nc4 8.Qd3 Rxd5 9.exd5 Bxd4 10.Qxd4 Qf6 11.b3 Qxd4 12.Rxd4 axb3 13.axb3 Ne3 14.f4
22/33 00:04 12,577k 2,985k +1.11 1.Bxf6 Bxf6 2.gxh5 a4 3.Bd5 e6 4.hxg6 exd5 5.h5 Bg5 6.f4 Nc4 7.Qh2 Bh6 8.Nxd5 Rxd5 9.exd5 Qf6 10.Rhg1 Bxf4 11.Qf2 Ne3 12.Rd3 Ng4 13.Qe2 fxg6 14.Rxg4 Bxg4 15.Qxg4 Bg5 16.hxg6
23/38- 00:05 17,132k 2,971k +1.02 1.Bxf6 Bxf6
23/38- 00:06 18,472k 2,968k +0.93 1.Bxf6 Bxf6
23/38+ 00:06 20,071k 2,969k +1.02 1.Bxf6
23/39+ 00:07 21,263k 2,964k +1.20 1.Bxf6
23/40- 00:07 22,097k 2,955k +0.80 1.Bxf6 Bxf6
23/41 00:08 26,433k 2,955k +0.70 1.Bxf6 Bxf6 2.gxh5 a4 3.Bd5 e6 4.hxg6 exd5 5.h5 Bg5 6.f4 Nc4 7.Qd3 Bxf4 8.Nxd5 Bg5 9.Rdg1 Rxd5 10.exd5 Qf6 11.Ka1 fxg6 12.hxg6 Bf5 13.Qxf5 Qxf5 14.Nxf5 Rxf5 15.Rh5 Be3 16.Rxf5 Bxg1 17.Rf7 Be3
24/40- 00:11 34,867k 2,942k +0.61 1.Bxf6 Bxf6
24/40+ 00:12 35,530k 2,923k +0.70 1.Bxf6
24/40+ 00:12 35,712k 2,923k +0.83 1.Bxf6
24/40 00:12 36,842k 2,913k +0.90 1.Bxf6 Bxf6 2.gxh5 a4 3.Bd5 e6 4.hxg6 exd5 5.h5 Bg5 6.f4 Nc4 7.Qd3 Bxf4 8.Nxd5 Bg5 9.Rhg1 Ne5 10.Qe2 b4 11.Rdf1 fxg6 12.Rxf8+ Kxf8 13.hxg6 Rxd5 14.exd5 Kg7 15.Qh5 Bh6 16.Qh1
25/43- 00:14 42,538k 2,873k +0.82 1.Bxf6 Bxf6
25/43- 00:16 46,558k 2,884k +0.73 1.Bxf6 Bxf6
25/43- 00:19 56,824k 2,895k +0.60 1.Bxf6 Bxf6
25/44+ 00:20 58,999k 2,898k +0.71 1.Bxf6
25/44 00:24 69,294k 2,887k +0.48 1.Bxf6 Bxf6 2.gxh5 a4 3.Bd5 e6 4.hxg6 exd5 5.gxf7+ Rxf7 6.Rhg1+ Rg7 7.Nxd5 Nc4 8.Rxg7+ Bxg7 9.Qf4 Rxd5 10.exd5 Qf6 11.Qxf6 Bxf6 12.b3 axb3 13.axb3 Ne3 14.Rd3 Ng2 15.h5 Kh7
26/47- 00:31 89,884k 2,888k +0.39 1.Bxf6 Bxf6
26/47+ 00:32 94,642k 2,869k +0.48 1.Bxf6
26/47 00:33 95,169k 2,869k +0.51 1.Bxf6 Bxf6 2.gxh5 a4 3.Bd5 e6 4.hxg6 exd5 5.h5 Bg5 6.f4 Nc4 7.Qd3 Bxf4 8.Nxd5 Ne5 9.Qf1 Bg5 10.Qg2 Bg4 11.Rdg1 b4 12.Nxb4 Be3 13.gxf7+ Rxf7 14.Nbc6 Qg5 15.Nxe5 dxe5 16.Nf5 Bxg1
27/43- 00:37 106,794k 2,870k +0.42 1.Bxf6 Bxf6
27/46+ 00:41 118,951k 2,890k +0.51 1.Bxf6
27/46- 00:46 135,734k 2,901k +0.33 1.Bxf6 Bxf6
27/46+ 00:49 142,796k 2,904k +0.48 1.Bxf6
27/53 01:04 187,324k 2,920k +0.38 1.gxh5 Nxh5 2.Nd5 Re8 3.a3 Nc4 4.Qf2 Kh7 5.Rhe1 Bc8 6.c3 Qd7 7.Bc1 e6 8.Ne3 Ba6 9.f4 b4 10.cxb4 axb4 11.axb4 Rc7 12.Nec2 e5 13.fxe5 Nxe5 14.Rg1 Ng4
28/38+ 01:09 203,438k 2,919k +0.47 1.gxh5
28/38+ 01:11 208,175k 2,917k +0.56 1.gxh5
28/51+ 01:20 235,071k 2,903k +0.69 1.gxh5
28/51 01:24 244,029k 2,901k +0.65 1.gxh5 Nxh5 2.Nd5 Re8 3.a3 Nc4 4.Bxc4 bxc4 5.Ka2 Kh7 6.Be3 e6 7.Nc3 Rc8 8.Nde2 d5 9.Nf4 Nxf4 10.Bxf4 d4 11.e5 dxc3 12.Qxd7 Qxd7 13.Rxd7 cxb2 14.Kxb2 c3+ 15.Ka2 Red8 16.Rxd8 Rxd8 17.Kb3 Rc8 18.h5 a4+ 19.Kb4
29/42+ 01:27 254,600k 2,898k +0.73 1.gxh5
29/45+ 01:34 274,009k 2,892k +0.82 1.gxh5
29/47- 01:44 301,253k 2,887k +0.56 1.gxh5 Nxh5
29/47+ 01:47 309,454k 2,891k +0.75 1.gxh5
29/47 01:56 336,804k 2,889k +0.92 1.gxh5 Nxh5 2.Nd5 Re8 3.a3 Nc4 4.Qf2 Kh7 5.Rhe1 Bc8 6.f4 Bg4 7.Rd3 Qd7 8.f5 a4 9.fxg6+ fxg6 10.Ba2 Rf8 11.Qg1 e5 12.Ne2 Nf4 13.Nec3 Be6 14.Bxc4 Rxc4 15.Nb6 Qc6 16.Bxf4 exf4 17.Nxc4 Bxc4
30/53+ 02:22 409,628k 2,876k +1.01 1.Bxf6
30/53- 02:27 423,545k 2,874k +0.84 1.Bxf6 Bxf6
30/53+ 02:28 427,885k 2,875k +0.97 1.Bxf6
30/53- 02:39 458,728k 2,881k +0.71 1.Bxf6 Bxf6
30/53 02:46 478,394k 2,879k +0.65 1.Bxf6 Bxf6 2.gxh5 a4 3.Bd5 e6 4.hxg6 exd5 5.h5 Bg5 6.f4 Nc4 7.Qd3 Bxf4 8.Nxd5 Ne5 9.Qf1 Bg5 10.Qg2 Bg4 11.Rdf1 b4 12.Nxb4 a3 13.Nd3 Nxd3 14.Qxg4 Ne5 15.gxf7+ Rxf7 16.Qe6 Rcc7 17.Nf5 Qb8 18.b3 Kh7 19.Nxd6
31/43- 03:33 615,392k 2,883k +0.56 1.Bxf6 Bxf6
31/43- 03:41 640,112k 2,885k +0.47 1.Bxf6 Bxf6
31/43- 03:53 672,404k 2,885k +0.34 1.Bxf6 Bxf6
31/53+ 04:10 719,550k 2,872k +0.45 1.Bxf6
31/53+ 04:14 731,044k 2,871k +0.70 1.Bxf6
31/53 04:45 814,573k 2,856k +0.38 1.Bxf6 Bxf6 2.gxh5 a4 3.Bd5 e6 4.f4 Ng4 5.e5 dxe5 6.fxe5 Bxe5 7.Bf3 b4 8.Nce2 Nf2 9.hxg6 Nxd1 10.gxf7+ Rxf7 11.Nxe6 Nc3+ 12.Nxc3 bxc3 13.Qg2+ Rg7 14.Qxg7+ Bxg7 15.Nxd8 cxb2 16.Nb7 Rc3 17.Bd5+ Kh8 18.Nd6 a3 19.Rg1 Kh7 20.Rg5 Re3 21.Be4+ Kg8 22.Rg1 Kf8
32/50 05:36 962,019k 2,861k +0.34 1.gxh5 a4 2.Bxf6 Bxf6 3.Bd5 e6 4.hxg6 exd5 5.h5 Bg5 6.f4 Nc4 7.Qd3 Bxf4 8.Nxd5 Ne5 9.Qf1 Bg5 10.Qg2 Bg4 11.Rdf1 b4 12.Nxb4 fxg6 13.hxg6 Rxf1+ 14.Rxf1 Qe8 15.Nd3 Nxd3 16.Qxg4 Nf4 17.e5 Rxe5 18.Nf3
33/51+ 05:40 974,360k 2,861k +0.43 1.gxh5
33/58+ 06:10 1,060,674k 2,862k +0.52 1.Bxf6
33/59- 06:23 1,097,785k 2,864k +0.26 1.Bxf6 Bxf6
-
Uri Blass
- Posts: 10297
- Joined: Thu Mar 09, 2006 12:37 am
- Location: Tel-Aviv Israel
Re: Some engines search these positions slowly
stockfish get depth 36 without too much problem also in the third position.
Here is the rest of the analysis
33/60+ 08:53 1,528,698k 2,865k +0.45 1.gxh5
33/60 10:26 1,772,461k 2,828k +0.12 1.gxh5 a4 2.Bxf6 Bxf6 3.hxg6 axb3 4.h5 bxc2+ 5.Nxc2 fxg6 6.hxg6 Bg7 7.Qh2 Rxf3 8.Qh7+ Kf8 9.Qh8+ Bxh8 10.Rxh8+ Kg7 11.Rxd8 Kxg6 12.Nb4 Kf7 13.Rh8 Bc6 14.Rh7+ Kf8 15.Ncd5 Rf2 16.Rh8+ Kf7 17.Rg1 Bxd5 18.Rh7+ Kf8 19.exd5 Ke8 20.b3 Kd7 21.a3 Rf7 22.Rxf7
34/54+ 11:04 1,887,405k 2,842k +0.20 1.gxh5
34/57+ 11:08 1,901,407k 2,844k +0.29 1.gxh5
34/62+ 11:38 1,980,818k 2,837k +0.43 1.gxh5
34/62 13:17 2,294,254k 2,876k +0.11 1.gxh5 a4 2.Bxf6 Bxf6 3.Bd5 e6 4.hxg6 exd5 5.h5 Bg5 6.f4 Nc4 7.Qd3 Bxf4 8.Nxd5 Ne5 9.Qf1 Bg5 10.Qg2 Bg4 11.Rdf1 b4 12.Nxb4 a3 13.Nd3 Nxd3 14.Qxg4 Ne5 15.gxf7+ Rxf7 16.Qe6 Qf8 17.Rxf7 Qxf7 18.Rf1 Qxe6 19.Nxe6 Rb5 20.Rf8+ Kh7 21.Nxg5+ Kh6 22.Ne6 Rxb2+ 23.Ka1 Kxh5 24.Ra8 Rxc2 25.Rxa3 Kg6 26.Nf4+ Kf6 27.Nd5+ Ke6 28.Kb1 Rc4 29.Nf4+ Kf6 30.Ra7 Rb4+ 31.Kc2 Rxe4
35/39+ 13:31 2,338,987k 2,883k +0.20 1.gxh5
35/39+ 13:31 2,340,862k 2,883k +0.28 1.gxh5
35/39+ 13:32 2,343,983k 2,884k +0.42 1.gxh5
35/48+ 13:48 2,393,500k 2,890k +0.60 1.gxh5
35/48 14:03 2,443,479k 2,895k +0.71 1.gxh5 a4 2.Bxf6 Bxf6 3.Bd5 e6 4.hxg6 exd5 5.h5 Bg5 6.f4 Nc4 7.Qd3 Bxf4 8.Nxd5 Ne5 9.Qf1 Bg5 10.Qg2 Bg4 11.Rdf1 b4 12.Nxb4 a3 13.Nd3 Nxd3 14.cxd3 Bd7 15.Nb3 Rb5 16.bxa3 Qa8 17.h6 Qxa3 18.h7+ Kh8 19.Rxf7 Rxf7 20.gxf7
36/46- 14:44 2,571,037k 2,908k +0.62 1.gxh5 a4
36/53- 15:14 2,652,862k 2,902k +0.53 1.gxh5 a4
36/53- 16:27 2,859,395k 2,895k +0.40 1.gxh5 a4
36/53+ 17:48 3,092,144k 2,893k +0.51 1.gxh5
36/53 18:31 3,204,314k 2,883k +0.47 1.gxh5 a4 2.Bxf6 Bxf6 3.Bd5 e6 4.hxg6 exd5 5.h5 Bg5 6.f4 Nc4 7.Qd3 Bxf4 8.Nxd5 Ne5 9.Qf1 Bg5 10.Qg2 Bg4 11.Rdf1 b4 12.Nxb4 fxg6 13.hxg6 Rxf1+ 14.Rxf1 Qe8 15.g7 Qg6 16.Nd3 Rc7 17.Nxe5 dxe5 18.Qxg4 exd4 19.Rh1 a3 20.Qh3 Qxg7 21.Qb3+ Qf7 22.Qb8+ Kg7
37/48- 22:28 3,910,507k 2,901k +0.39 1.gxh5 a4
37/53+ 23:10 4,037,053k 2,904k +0.47 1.gxh5
37/62+ 23:19 4,064,796k 2,905k +0.60 1.gxh5
37/63+ 23:54 4,172,336k 2,908k +0.79 1.gxh5
37/63 27:56 4,895,819k 2,920k +0.43 1.Bxf6 Bxf6 2.gxh5 a4 3.Bd5 e6 4.hxg6 exd5 5.h5 Qe7 6.Nxd5 Rxd5 7.exd5 Nc4 8.Qh6 fxg6 9.Rhg1 Bxd4 10.Rxd4 Bf5 11.hxg6 Qg7 12.Qh7+ Qxh7 13.gxh7+ Kh8 14.Rh4 Bxh7 15.Rh6 Rxf3 16.Rgh1 Rf7 17.b3 Ne3 18.Kb2 Nxd5 19.Rxd6 Ne3 20.Rd3 Nxc2 21.Kxc2 Kg7 22.Rxh7+ Kxh7 23.Kc3 Rf2 24.a3 Kg6 25.bxa4 bxa4 26.Kb4 Rf4+ 27.Ka5 Kf7 28.Rd1
38/66+ 28:35 5,010,362k 2,921k +0.52 1.Bxf6
38/66+ 28:48 5,047,661k 2,920k +0.60 1.Bxf6
38/66 29:27 5,161,835k 2,921k +0.63 1.Bxf6 Bxf6 2.gxh5 a4 3.Bd5 e6 4.hxg6 exd5 5.h5 Qe7 6.Nxd5 Rxd5 7.exd5 Nc4 8.Qh6 fxg6 9.Rhg1 Bxd4 10.Rxd4 Bf5 11.hxg6 Qg7 12.Qh7+ Qxh7 13.gxh7+ Kh8 14.Rg8+ Rxg8 15.hxg8Q+ Kxg8 16.Kc1 Ne3 17.Kd2 Nc4+ 18.Kc3 Ne3 19.b3 Nxc2 20.Rf4 axb3 21.axb3 Bh7 22.Rf6 b4+ 23.Kd2 Nd4 24.Rxd6 Bc2 25.f4 Bxb3 26.Kd3 Nf3
39/61- 31:09 5,449,333k 2,915k +0.54 1.Bxf6 Bxf6
39/61- 31:48 5,564,620k 2,916k +0.45 1.Bxf6 Bxf6
Here is the rest of the analysis
33/60+ 08:53 1,528,698k 2,865k +0.45 1.gxh5
33/60 10:26 1,772,461k 2,828k +0.12 1.gxh5 a4 2.Bxf6 Bxf6 3.hxg6 axb3 4.h5 bxc2+ 5.Nxc2 fxg6 6.hxg6 Bg7 7.Qh2 Rxf3 8.Qh7+ Kf8 9.Qh8+ Bxh8 10.Rxh8+ Kg7 11.Rxd8 Kxg6 12.Nb4 Kf7 13.Rh8 Bc6 14.Rh7+ Kf8 15.Ncd5 Rf2 16.Rh8+ Kf7 17.Rg1 Bxd5 18.Rh7+ Kf8 19.exd5 Ke8 20.b3 Kd7 21.a3 Rf7 22.Rxf7
34/54+ 11:04 1,887,405k 2,842k +0.20 1.gxh5
34/57+ 11:08 1,901,407k 2,844k +0.29 1.gxh5
34/62+ 11:38 1,980,818k 2,837k +0.43 1.gxh5
34/62 13:17 2,294,254k 2,876k +0.11 1.gxh5 a4 2.Bxf6 Bxf6 3.Bd5 e6 4.hxg6 exd5 5.h5 Bg5 6.f4 Nc4 7.Qd3 Bxf4 8.Nxd5 Ne5 9.Qf1 Bg5 10.Qg2 Bg4 11.Rdf1 b4 12.Nxb4 a3 13.Nd3 Nxd3 14.Qxg4 Ne5 15.gxf7+ Rxf7 16.Qe6 Qf8 17.Rxf7 Qxf7 18.Rf1 Qxe6 19.Nxe6 Rb5 20.Rf8+ Kh7 21.Nxg5+ Kh6 22.Ne6 Rxb2+ 23.Ka1 Kxh5 24.Ra8 Rxc2 25.Rxa3 Kg6 26.Nf4+ Kf6 27.Nd5+ Ke6 28.Kb1 Rc4 29.Nf4+ Kf6 30.Ra7 Rb4+ 31.Kc2 Rxe4
35/39+ 13:31 2,338,987k 2,883k +0.20 1.gxh5
35/39+ 13:31 2,340,862k 2,883k +0.28 1.gxh5
35/39+ 13:32 2,343,983k 2,884k +0.42 1.gxh5
35/48+ 13:48 2,393,500k 2,890k +0.60 1.gxh5
35/48 14:03 2,443,479k 2,895k +0.71 1.gxh5 a4 2.Bxf6 Bxf6 3.Bd5 e6 4.hxg6 exd5 5.h5 Bg5 6.f4 Nc4 7.Qd3 Bxf4 8.Nxd5 Ne5 9.Qf1 Bg5 10.Qg2 Bg4 11.Rdf1 b4 12.Nxb4 a3 13.Nd3 Nxd3 14.cxd3 Bd7 15.Nb3 Rb5 16.bxa3 Qa8 17.h6 Qxa3 18.h7+ Kh8 19.Rxf7 Rxf7 20.gxf7
36/46- 14:44 2,571,037k 2,908k +0.62 1.gxh5 a4
36/53- 15:14 2,652,862k 2,902k +0.53 1.gxh5 a4
36/53- 16:27 2,859,395k 2,895k +0.40 1.gxh5 a4
36/53+ 17:48 3,092,144k 2,893k +0.51 1.gxh5
36/53 18:31 3,204,314k 2,883k +0.47 1.gxh5 a4 2.Bxf6 Bxf6 3.Bd5 e6 4.hxg6 exd5 5.h5 Bg5 6.f4 Nc4 7.Qd3 Bxf4 8.Nxd5 Ne5 9.Qf1 Bg5 10.Qg2 Bg4 11.Rdf1 b4 12.Nxb4 fxg6 13.hxg6 Rxf1+ 14.Rxf1 Qe8 15.g7 Qg6 16.Nd3 Rc7 17.Nxe5 dxe5 18.Qxg4 exd4 19.Rh1 a3 20.Qh3 Qxg7 21.Qb3+ Qf7 22.Qb8+ Kg7
37/48- 22:28 3,910,507k 2,901k +0.39 1.gxh5 a4
37/53+ 23:10 4,037,053k 2,904k +0.47 1.gxh5
37/62+ 23:19 4,064,796k 2,905k +0.60 1.gxh5
37/63+ 23:54 4,172,336k 2,908k +0.79 1.gxh5
37/63 27:56 4,895,819k 2,920k +0.43 1.Bxf6 Bxf6 2.gxh5 a4 3.Bd5 e6 4.hxg6 exd5 5.h5 Qe7 6.Nxd5 Rxd5 7.exd5 Nc4 8.Qh6 fxg6 9.Rhg1 Bxd4 10.Rxd4 Bf5 11.hxg6 Qg7 12.Qh7+ Qxh7 13.gxh7+ Kh8 14.Rh4 Bxh7 15.Rh6 Rxf3 16.Rgh1 Rf7 17.b3 Ne3 18.Kb2 Nxd5 19.Rxd6 Ne3 20.Rd3 Nxc2 21.Kxc2 Kg7 22.Rxh7+ Kxh7 23.Kc3 Rf2 24.a3 Kg6 25.bxa4 bxa4 26.Kb4 Rf4+ 27.Ka5 Kf7 28.Rd1
38/66+ 28:35 5,010,362k 2,921k +0.52 1.Bxf6
38/66+ 28:48 5,047,661k 2,920k +0.60 1.Bxf6
38/66 29:27 5,161,835k 2,921k +0.63 1.Bxf6 Bxf6 2.gxh5 a4 3.Bd5 e6 4.hxg6 exd5 5.h5 Qe7 6.Nxd5 Rxd5 7.exd5 Nc4 8.Qh6 fxg6 9.Rhg1 Bxd4 10.Rxd4 Bf5 11.hxg6 Qg7 12.Qh7+ Qxh7 13.gxh7+ Kh8 14.Rg8+ Rxg8 15.hxg8Q+ Kxg8 16.Kc1 Ne3 17.Kd2 Nc4+ 18.Kc3 Ne3 19.b3 Nxc2 20.Rf4 axb3 21.axb3 Bh7 22.Rf6 b4+ 23.Kd2 Nd4 24.Rxd6 Bc2 25.f4 Bxb3 26.Kd3 Nf3
39/61- 31:09 5,449,333k 2,915k +0.54 1.Bxf6 Bxf6
39/61- 31:48 5,564,620k 2,916k +0.45 1.Bxf6 Bxf6