Vinvin wrote:jdart wrote:This one (game 9) looks really difficult:
[D] 4q2r/1b1kbp2/1p2p1p1/pP1pP1N1/P2P1PQP/3BK3/2R5/8 w - - 0 1
Chessbase Live Book has this record, so Stockfish and Komodo got it, but required substantial depth:
[pgn]
[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[SetUp "1"]
[FEN "4q2r/1b1kbp2/1p2p1p1/pP1pP1N1/P2P1PQP/3BK3/2R5/8 w - - 0 1"]
[PlyCount "3"]
{[#]} 1. Bxg6 (1. Nxe6 fxe6 2. Bxg6 {0.00/34 Houdini 4 x64}) (1. Bxg6 Bxg5 2.
Qxg5 {1.60/66 Stockfish 111217/Die Illusion}) 1... Bxg5 2. Qxg5 {1.33/54
Komodo 11.2.2 64-bit/willthrash} *
[/pgn]
I ran it 6 times with SF-McBrain-v40, 6*4GHz.
Timing to find the solution : 1m43s, 8m40s, 1m9s, 7m13s, 1m26s and one time not found after 15 minutes.
Code: Select all
FEN: 4q2r/1b1kbp2/1p2p1p1/pP1pP1N1/P2P1PQP/3BK3/2R5/8 w - - 0 1
SF-McBrain-v40_x64_modern:
...
23/29 00:53 610 896k 11 485k 0,00 1.Nxe6 fxe6 2.Bxg6 Qf8 3.h5 Ba3 4.Ke2 Qh6 5.f5 Rc8 6.fxe6+ Kd8 7.Rxc8+ Bxc8 8.Qf3 Bb4 9.e7+ Bxe7 10.Qxd5+ Kc7 11.Qc6+ Kb8 12.Bf7 Bg4+ 13.Kd3 Bf5+ 14.Ke2 Bg4+
34/43+ 01:43 1 176 620k 11 346k +0,07 1.Bxg6
34/43+ 01:43 1 178 815k 11 344k +0,15 1.Bxg6
34/47+ 01:47 1 220 879k 11 327k +0,92 1.Bxg6
34/68 01:54 1 290 915k 11 290k +1,08 1.Bxg6 Bxg5 2.Qxg5 fxg6 3.f5 Rg8 4.Qh6 Qf7 5.f6 Ke8 6.Ke2 Qd7 7.Kd3 Kd8 8.Qg5 Qf7 9.Qc1 Rh8 10.Qa3 Qf8 11.Qxf8+ Rxf8 12.Rg2 Bc8 13.Rxg6 Bd7 14.Rg7 Be8 15.Re7 Rh8 16.Rxe6 Bg6+ 17.Kd2 Rxh4 18.Rd6+ Ke8 19.Rxd5 Rh3 20.Rd6 Kf7 21.Rd7+ Ke8 22.e6 Rf3 23.f7+ Bxf7 24.Rxf7 Rxf7 25.exf7+ Kxf7 26.Ke3 Ke7 27.Ke4 Kd6
35/58- 02:02 1 377 001k 11 207k +1,00 1.Bxg6 Bxg5
35/58+ 02:06 1 416 499k 11 165k +1,11 1.Bxg6
35/58+ 02:10 1 460 447k 11 171k +1,31 1.Bxg6
35/61- 02:15 1 518 663k 11 176k +0,93 1.Bxg6 Bxg5
35/63+ 02:18 1 545 680k 11 181k +1,25 1.Bxg6
35/79- 02:23 1 602 458k 11 153k +0,71 1.Bxg6 Bxg5
35/79 02:26 1 626 092k 11 137k +1,08 1.Bxg6 Bxg5 2.Qxg5 fxg6 3.f5 Rg8 4.Qh6 Qf7 5.f6 Kd8 6.Kf2 g5 7.hxg5 Rg6 8.Qh3 Rxg5 9.Qa3 Ke8 10.Qd6 Rg2+ 11.Kxg2 Qg6+ 12.Kf1 Qd3+ 13.Re2 Qd1+ 14.Kf2 Qxd4+ 15.Kg2 Qg4+ 16.Kf1 Qh3+ 17.Ke1 Qh4+ 18.Kd1 Qxa4+ 19.Rc2 Qg4+ 20.Kc1 Qg1+ 21.Kb2 Qd4+ 22.Ka2 Qa4+ 23.Kb1 Qxb5+ 24.Rb2 Qd3+ 25.Kc1 Qc4+ 26.Rc2 Qf1+ 27.Kd2 Qf4+ 28.Ke1 Qe3+ 29.Re2 Qg1+ 30.Kd2 Qd4+ 31.Kc2
36/67- 02:28 1 649 148k 11 135k +1,01 1.Bxg6 Bxg5
36/67- 02:28 1 654 115k 11 136k +0,93 1.Bxg6 Bxg5
36/67- 02:42 1 806 695k 11 116k +0,15 1.Bxg6 Bxg5
36/67 02:48 1 873 214k 11 146k 0,00 1.Bxg6 Bxg5 2.Qxg5 fxg6 3.f5 Rg8 4.Qh6 Qf7 5.f6 Kd8 6.Ke2 g5 7.hxg5 Rg6 8.Qh5 Kd7 9.Qh4 Rg8 10.Qh6 Rg6 11.Qh4
37/41+ 03:44 2 535 914k 11 314k +0,07 1.Bxg6
37/41+ 03:44 2 542 701k 11 316k +0,15 1.Bxg6
37/41+ 03:45 2 551 229k 11 315k +0,26 1.Bxg6
37/58 04:12 2 858 399k 11 328k +0,10 1.Bxg6 Bxg5 2.Qxg5 fxg6 3.f5 Rg8 4.f6 Qf7 5.Kf3 Qh7 6.Rg2 Ke8 7.h5 Kf7 8.Rc2 Rc8 9.hxg6+ Qxg6 10.Qxg6+ Kxg6 11.Rg2+ Kf5 12.Rg7 Ba8 13.Rd7 Rc3+ 14.Kf2 Ke4 15.Rd6 Rf3+ 16.Kg2 Rf5 17.Rxb6 Kxd4 18.Rxe6 Ke4 19.Re8 Bb7 20.Re7 d4 21.Rxb7 Kxe5 22.Rf7 d3 23.Rd7 Rxf6 24.Rxd3 Rf4 25.Re3+ Kd6 26.Rg3 Rxa4
38/58+ 04:16 2 899 705k 11 316k +0,14 1.Bxg6
38/60+ 04:16 2 903 616k 11 314k +0,18 1.Bxg6
38/63+ 04:18 2 927 867k 11 311k +0,51 1.Bxg6
38/70 04:28 3 024 914k 11 283k +0,29 1.Bxg6 Bxg5 2.Qxg5 fxg6 3.f5 Rg8 4.f6 Qf7 5.Kf3 Qh7 6.Rg2 Ke8 7.h5 Kf7 8.Rc2 Rc8 9.Qxg6+ Qxg6 10.hxg6+ Kxg6 11.Rg2+ Kf5 12.Rg7 Ba8 13.Rd7 Rc3+ 14.Kf2 Ke4 15.Rd6 Rf3+ 16.Kg2 Rf5 17.Rxb6 Kxd4 18.Rb8 Bb7 19.Rxb7 Kxe5 20.f7 Kd6 21.Ra7 Kc5 22.Kg3 d4 23.Kg4 d3 24.Rd7 d2 25.Rxd2 Rxf7 26.Re2 Rd7 27.Re5+ Kd6 28.Re3 Rc7 29.Re4 Rb7 30.Re3 Kd5 31.Kf4 Rf7+ 32.Kg5
39/69- 04:50 3 258 876k 11 236k +0,22 1.Bxg6 Bxg5
39/69+ 04:53 3 296 846k 11 236k +0,28 1.Bxg6
39/70 05:00 3 370 145k 11 221k +0,15 1.Bxg6 Bxg5 2.Qxg5 fxg6 3.f5 Rg8 4.f6 Qf7 5.Kf3 Qh7 6.Rg2 Ke8 7.h5 Kf7 8.Rc2 Rc8 9.Qxg6+ Qxg6 10.hxg6+ Kxg6 11.Rg2+ Kf5 12.Rg7 Ba8 13.Ra7 Rc3+ 14.Ke2 Rc8 15.Rh7 Ke4 16.Rh4+ Kf5 17.Ke3 Rf8 18.Rh7 Rd8 19.Kf3 Rc8 20.Rd7 Rc3+ 21.Kg2 Ke4 22.Rd6 Kxd4 23.Rxe6 Rc8 24.f7 Rf8 25.Re7 Kd3 26.Rd7 d4+ 27.Kg3 Bd5 28.Rxd5 Rxf7 29.e6 Re7 30.Rd6 Ke3 31.Kg4 Ke4 32.Rxb6 Rg7+ 33.Kh4 Ke5
40/54+ 05:08 3 455 629k 11 215k +0,20 1.Bxg6
40/54+ 05:11 3 485 138k 11 202k +0,25 1.Bxg6
40/54+ 05:17 3 550 067k 11 197k +0,59 1.Bxg6
40/73 05:32 3 716 011k 11 190k +0,63 1.Bxg6 Bxg5 2.Qxg5 fxg6 3.f5 Rg8 4.f6 Qf7 5.Kf3 Qh7 6.Rg2 Ke8 7.h5 Kf7 8.Rc2 Rc8 9.hxg6+ Qxg6 10.Qxg6+ Kxg6 11.Rg2+ Kf5 12.Rg7 Ba8 13.Rd7 Rc3+ 14.Kf2 Ke4 15.Rd6 Rf3+ 16.Kg2 Rf5 17.Rxb6 Kxd4 18.Rb8 Kxe5 19.Rxa8 Rxf6 20.b6 Rf7 21.Rxa5 Rb7 22.Ra6 Kd6 23.a5 Kc6 24.Kf3 Rf7+ 25.Ke3 e5 26.Ra8 Rh7 27.Rd8 Rh3+ 28.Kd2 Ra3 29.Ra8 Ra2+ 30.Kc3 e4 31.Ra7 Ra1 32.Rc7+ Kb5
SF-McBrain-v40_x64_modern:
... 37/27 02:54 1 831 377k 10 467k 0,00 1.Nxe6 fxe6 2.Bxg6 Qf8 3.h5 Ba3 4.Ke2 Qh6 5.Kf3 Rf8 6.f5 exf5 7.Qg3 Kd8 8.Qf4 Qxf4+ 9.Kxf4 Bc8 10.h6 Bd7 11.h7 Rh8 12.Kg5 Be7+ 13.Kf4 Ba3
38/27 04:54 3 077 973k 10 448k 0,00 1.Nxe6 fxe6 2.Bxg6 Qf8 3.h5 Ba3 4.Ke2 Qh6 5.Kf3 Rf8 6.f5 exf5 7.Qg3 Kd8 8.Qf4 Qxf4+ 9.Kxf4 Bc8 10.h6 Bd7 11.h7 Rh8 12.Kg5 Be7+ 13.Kf4 Ba3
39/27 06:50 4 289 838k 10 440k 0,00 1.Nxe6 fxe6 2.Bxg6 Qf8 3.h5 Ba3 4.Ke2 Qh6 5.Kf3 Rf8 6.f5 exf5 7.Qg3 Kd8 8.Qf4 Qxf4+ 9.Kxf4 Bc8 10.h6 Bd7 11.h7 Rh8 12.Kg5 Be7+ 13.Kf4 Ba3
40/48+ 08:40 5 443 993k 10 463k +0,07 1.Bxg6
40/48+ 08:43 5 474 051k 10 462k +0,15 1.Bxg6
40/73+ 09:21 5 881 899k 10 470k +0,63 1.Bxg6
40/78 09:37 6 056 438k 10 485k +0,10 1.Bxg6 Bxg5 2.Qxg5 fxg6 3.f5 Rg8 4.f6 Qf7 5.Kf3 Qh7 6.Rg2 Ke8 7.h5 Kf7 8.Rc2 Rc8 9.Qxg6+ Qxg6 10.hxg6+ Kxg6 11.Rg2+ Kf5 12.Rg7 Ba8 13.Ra7 Rh8 14.Rd7 Rh3+ 15.Kf2 Ke4 16.Rd6 Rf3+ 17.Kg2 Rf5 18.Rxb6 Kxd4 19.Rb8 Bb7 20.Rxb7 Kxe5 21.f7 Kd6 22.Ra7 Kc5 23.Rc7+ Kb6 24.Rc6+ Kb7 25.Rxe6 Rxf7 26.Kg3 Rf8 27.Rd6 Re8 28.Ra6 Re3+ 29.Kg2 Re4 30.Rxa5 d4 31.Kf3
41/58+ 09:39 6 083 887k 10 490k +0,14 1.Bxg6
41/59+ 09:40 6 088 751k 10 491k +0,18 1.Bxg6
41/66 09:53 6 234 487k 10 501k +0,20 1.Bxg6 Bxg5 2.Qxg5 fxg6 3.f5 Rg8 4.f6 Qf7 5.Kf3 Qh7 6.Rg2 Ke8 7.h5 Kf7 8.Rc2 Rc8 9.hxg6+ Qxg6 10.Qxg6+ Kxg6 11.Rg2+ Kf5 12.Rg7 Ba8 13.Rd7 Rc3+ 14.Kf2 Ke4 15.Rd6 Rf3+ 16.Kg2 Rf5 17.Rxb6 Kxd4 18.Rb8 Bb7 19.Rxb7 Kxe5 20.f7 Kd6 21.Ra7 Kc5 22.Rc7+ Kb6 23.Rd7 d4 24.Rxd4 Rxf7 25.Rc4 e5 26.Kg3 Rc7 27.Re4 Rd7 28.Kf2
42/60+ 10:01 6 320 609k 10 508k +0,26 1.Bxg6
42/65+ 10:12 6 437 030k 10 516k +0,31 1.Bxg6
42/72 10:32 6 651 314k 10 509k +0,28 1.Bxg6 Bxg5 2.Qxg5 fxg6 3.f5 Rg8 4.f6 Qf7 5.Kf3 Qh7 6.Rg2 Ke8 7.h5 Kf7 8.Rc2 Rc8 9.hxg6+ Qxg6 10.Qxg6+ Kxg6 11.Rg2+ Kf5 12.Rg7 Ba8 13.Rd7 Rc3+ 14.Kf2 Ke4 15.Rd6 Rf3+ 16.Kg2 Rf5 17.Rxb6 Kxd4 18.Rb8 Bb7 19.Rxb7 Kxe5 20.f7 Kd6 21.Ra7 Kc5 22.Rc7+ Kb6 23.Rd7 d4 24.Rxd4 Rxf7 25.Rc4 e5 26.Kg3 Rc7 27.Re4 Re7 28.Kg4 Kc5 29.Kf3 Rf7+ 30.Ke3 Rf5 31.Rg4 Rf1
43/63+ 10:53 6 843 530k 10 468k +0,34 1.Bxg6
SF-McBrain-v40_x64_modern:
...
30/27 00:21 222 986k 10 453k 0,00 1.Nxe6 fxe6 2.Bxg6 Qf8 3.h5 Ba3 4.Ke2 Qh6 5.f5 Rc8 6.fxe6+ Kd8 7.Rxc8+ Bxc8 8.Qf3 Bb4 9.Qxd5+ Ke7 10.Qc6 Qd2+ 11.Kf3 Qd1+ 12.Ke3 Qe1+ 13.Kf3 Qd1+
31/27 00:35 373 881k 10 473k 0,00 1.Nxe6 fxe6 2.Bxg6 Qf8 3.h5 Ba3 4.Ke2 Qh6 5.f5 Rc8 6.fxe6+ Kd8 7.Rxc8+ Bxc8 8.Qf3 Bb4 9.Qxd5+ Ke7 10.Qc6 Qd2+ 11.Kf3 Qd1+ 12.Ke3 Qe1+ 13.Kf3 Qd1+
32/27 00:45 466 411k 10 260k 0,00 1.Nxe6 fxe6 2.Bxg6 Qf8 3.h5 Ba3 4.Ke2 Qh6 5.f5 Rc8 6.fxe6+ Kd8 7.Rxc8+ Bxc8 8.Qf3 Bb4 9.Qxd5+ Ke7 10.Qc6 Qd2+ 11.Kf3 Qd1+ 12.Ke3 Qe1+ 13.Kf3 Qd1+
33/48+ 01:09 703 965k 10 128k +0,07 1.Bxg6
33/48+ 01:10 712 522k 10 139k +0,15 1.Bxg6
33/49 01:11 730 206k 10 156k +0,19 1.Bxg6 Bxg5 2.Qxg5 fxg6 3.f5 Rg8 4.Qh6 Qf7 5.f6 Kd8 6.Kd3 Qd7 7.Qg5 Qf7 8.Qc1 Qd7 9.Qa3 Ke8 10.Qd6 Qxd6 11.exd6 Rf8 12.Rc7 Rxf6 13.Re7+ Kd8 14.Rxb7 Rf3+ 15.Kd2 Rf4 16.Ke3 Re4+ 17.Kd3 Rxh4 18.Rxb6 Rh3+ 19.Ke2 Ra3 20.Ra6 Rxa4 21.Ke3
34/43+ 01:18 792 743k 10 121k +0,24 1.Bxg6
34/61+ 01:20 815 001k 10 107k +0,29 1.Bxg6
34/61+ 01:22 838 496k 10 107k +0,50 1.Bxg6
34/61- 01:29 900 777k 10 097k +0,12 1.Bxg6 Bxg5
34/61 01:34 954 889k 10 131k 0,00 1.Bxg6 Bxg5 2.Qxg5 fxg6 3.f5 Rg8 4.Qh6 Qf7 5.f6 Kd8 6.Kd3 Bc8 7.Qc1 Bd7 8.Qa3 Qf8 9.Qc3 g5 10.Qc7+ Ke8 11.h5 Rh8 12.Qb8+ Kf7 13.Qa7 Ke8 14.f7+ Qxf7 15.Qa8+ Ke7 16.Qxh8 Qf3+ 17.Kd2 Qf2+ 18.Kc3 Qe3+ 19.Kb2 Qxd4+ 20.Rc3 Qd2+ 21.Kb3 Qd1+ 22.Rc2 Qd3+ 23.Kb2 Qd4+
35/30+ 01:43 1 048 885k 10 153k +0,07 1.Bxg6
35/52+ 01:43 1 051 552k 10 154k +0,15 1.Bxg6
35/52+ 01:43 1 054 500k 10 154k +0,26 1.Bxg6
35/54 01:47 1 090 438k 10 162k +0,15 1.Bxg6 Bxg5 2.Qxg5 fxg6 3.f5 Rg8 4.Qh6 Qf7 5.f6 Kd8 6.Kd3 Bc8 7.Qd2 g5 8.Qc3 Qd7 9.hxg5 Rxg5 10.f7 Ke7 11.f8Q+ Kxf8 12.Qxc8+ Qxc8 13.Rxc8+ Ke7 14.Rc7+ Kd8 15.Rc6 Rg3+ 16.Ke2 Ke7 17.Rxb6 Ra3 18.Rb7+ Ke8 19.Kd2 Rxa4 20.Ke3 Kd8 21.Ra7 Ra3+ 22.Kf4 Ra4 23.Kg5 Rxd4 24.Kf6 Rb4
SF-McBrain-v40_x64_modern:
...
38/29 04:35 3 026 230k 10 973k 0,00 1.Nxe6 fxe6 2.Bxg6 Qf8 3.h5 Ba3 4.Ke2 Qh6 5.f5 Rc8 6.fxe6+ Kd8 7.Rxc8+ Bxc8 8.Qf3 Bb4 9.e7+ Bxe7 10.Qxd5+ Kc7 11.Qc6+ Kb8 12.Bf7 Bg4+ 13.Kd3 Bf5+ 14.Ke2 Bg4+
39/71+ 07:13 4 720 054k 10 890k +0,07 1.Bxg6
39/71+ 07:14 4 726 458k 10 890k +0,15 1.Bxg6
39/71+ 07:25 4 853 388k 10 890k +0,63 1.Bxg6
39/71 08:24 5 484 173k 10 866k +0,88 1.Bxg6 Bxg5 2.Qxg5 fxg6 3.f5 Rg8 4.f6 Qf7 5.Qh6 Kd8 6.Kf3 g5 7.hxg5 Rg6 8.Qh4 Rg8 9.Rf2 Bc8 10.Kg4 Bd7 11.Qh5 Be8 12.Qxf7 Bxf7 13.Rc2 Be8 14.Kf4 Rh8 15.g6 Bxg6 16.Rc6 Bf5 17.Rxb6 Rh4+ 18.Kg5 Rg4+ 19.Kh6 Ke8 20.Rb8+ Kf7 21.Rb7+ Kf8 22.b6 Rxd4 23.Ra7 Rh4+ 24.Kg5 Rg4+ 25.Kh5 Rxa4 26.b7 Rb4 27.Ra8+ Kf7 28.b8Q Rxb8
40/56- 08:31 5 554 869k 10 866k +0,80 1.Bxg6 Bxg5
40/56- 08:32 5 573 097k 10 866k +0,73 1.Bxg6 Bxg5
40/65 08:43 5 684 827k 10 851k +0,80 1.Bxg6 Bxg5 2.Qxg5 fxg6 3.f5 Rg8 4.f6 Qf8 5.Ke2 Rh8 6.Qc1 Qb8 7.Qa3 Qf8 8.Qxf8 Rxf8 9.Ke3 Rf7 10.Kf4 Rh7 11.Kg5 Rh5+ 12.Kxg6 Rxh4 13.Rf2 Ke8 14.f7+ Kf8 15.Rc2 Rf4 16.Rc7 Rf1 17.Rxb7 Rg1+ 18.Kh5 Rh1+ 19.Kg4 Rg1+ 20.Kf3 Rf1+ 21.Ke3 Re1+ 22.Kd3 Ra1 23.Rxb6 Ra3+ 24.Ke2 Kxf7 25.Rb8 Ke7 26.b6 Kd7 27.Rg8 Rb3 28.Ra8 Kc6 29.b7 Rxb7 30.Rxa5 Rb4 31.Ke3 Kb7
41/69- 09:29 6 141 718k 10 788k +0,72 1.Bxg6 Bxg5
41/71+ 09:53 6 400 551k 10 785k +0,82 1.Bxg6
41/75+ 10:31 6 836 706k 10 826k +0,97 1.Bxg6
41/75- 10:48 7 018 439k 10 819k +0,65 1.Bxg6 Bxg5
SF-McBrain-v40_x64_modern:
...
33/28 00:52 569 437k 10 843k 0,00 1.Nxe6 fxe6 2.Bxg6 Qf8 3.h5 Ba3 4.Ke2 Qh6 5.f5 Rc8 6.fxe6+ Kd8 7.Rxc8+ Bxc8 8.Qf3 Bb4 9.Qxd5+ Ke7 10.Kf3 Qd2 11.Qc6 Qd1+ 12.Kg2 Qg4+ 13.Kf1 Qd1+ 14.Kg2
34/51+ 01:26 946 586k 10 927k +0,07 1.Bxg6
34/51+ 01:27 958 350k 10 929k +0,15 1.Bxg6
34/51+ 01:33 1 022 957k 10 943k +0,63 1.Bxg6
34/67 01:40 1 098 981k 10 947k +0,72 1.Bxg6 Bxg5 2.Qxg5 fxg6 3.f5 Rg8 4.Qh6 Qf7 5.f6 Kd8 6.Kf3 Qd7 7.Qg5 Qf7 8.Qc1 Qd7 9.Qa3 Ke8 10.Kg4 g5 11.h5 Qh7 12.Kg3 Rf8 13.Rf2 Qd7 14.h6 Qc7 15.Qd3 Qf7 16.h7 Rh8 17.Rh2 Qc7 18.Kg4 Qc1 19.Qg6+ Kd8 20.Qxg5
35/56+ 01:44 1 146 204k 10 961k +0,82 1.Bxg6
35/56- 01:46 1 162 590k 10 964k +0,64 1.Bxg6 Bxg5
35/56- 01:56 1 274 894k 10 978k +0,15 1.Bxg6 Bxg5
35/56 01:57 1 293 872k 10 982k +0,10 1.Bxg6 Bxg5 2.Qxg5 fxg6 3.f5 Rg8 4.f6 Qf7 5.Kf3 Qh7 6.Rg2 Ke8 7.h5 Kf7 8.Rc2 Rc8 9.Qxg6+ Qxg6 10.hxg6+ Kxg6 11.Rg2+ Kf5 12.Rg7 Rb8 13.Ke3 Ba8 14.f7 Rf8 15.Rg8 Rxf7 16.Rxa8 Rh7 17.Rf8+ Kg5 18.Rb8 Rh3+ 19.Kd2 Kf5 20.Rxb6 Ra3 21.Ra6 Rxa4 22.Kd3 Ra3+ 23.Kc2 Ke4 24.Rxe6 Kxd4
36/54+ 02:01 1 338 358k 10 989k +0,14 1.Bxg6
36/54+ 02:02 1 350 992k 10 991k +0,18 1.Bxg6
36/60+ 02:04 1 370 872k 10 991k +0,25 1.Bxg6
Regarding this game 9, I was wondering, does anyone get a big score soon after 37...Rh8 instead of the move played by Stockfish 37...Qf8.
It looks a litte bit better. I let it run in Multi PV. I don't believe I have seen this position come by, but may easily have missed it. With a score this low it seems the only thing that draws. Pity that Stockfish did not find. I do think it very often seems that Alpha seeks these singular positions where the rest of the moves is totally losing. This is very deep hough, so that a very selective search would fit with that. I don't think the "super eval" really comes into play here. Only in seeking out this sort of positions. And it can't have any holes. That's all that's needed...
Kaissa does not see the eval though, only here it starts seeing more than 0.00 I have not searched the exact spot
[D]3k2r1/1b3q2/1p2pPp1/pP1pP3/P2P3P/4Q3/3K4/2R5 b - -
Engine: Kaissa (one thread, 512 MB)
This is already experimental version 15 of the eval.
by T. Romstad, M. Costalba, J. Kiiski, G. Linscott
39 167:36 +0.54 37...Rh8 38.Qa3 Qf8 39.Qxf8+ Rxf8
40.Rg1 Bc8 41.Rxg6 Bd7 42.Rg7 Be8
43.Ra7 Rg8 44.f7 Bxf7 45.Rxf7 Rg4
46.Kc3 Rxh4 47.Rb7 Rh3+ 48.Kd2 Ra3
49.Rxb6 Rxa4 50.Ke3 Ke7 (31.609.631.128) 3143
39 167:36 +1.55 37...Kd7 38.Qa3 Qf8 39.Qxf8 Rxf8
40.Rg1 Bc8 41.Rxg6 Rh8 42.h5 Ke8
43.h6 Bd7 44.f7+ Kxf7 45.Rg7+ Kf8
46.Rxd7 Rxh6 47.Ke3 Ke8 48.Rb7 Kd8
49.Rxb6 Rh3+ 50.Kf4 Rh4+ (31.609.631.128) 3143
39 167:36 +4.37 37...Re8 38.Qa3 Qf8 39.Qc3 Qf7
40.Ke3 Rh8 41.Qa3 Qf8 42.Qxf8+ Rxf8
43.Kf4 Rh8 44.Kg5 Rh5+ 45.Kxg6 Rxh4
46.f7 Ke7 47.Rc7+ Kf8 48.Rxb7 Rh6+
49.Kg5 Rg6+ 50.Kh5 Rh6+ (31.609.631.128) 3143
39 167:36 +6.07 37...Qh7 38.Qa3 Qh6+ 39.Ke2 Qh5+
40.Ke3 Qh6+ 41.Kf3 Qf8 42.Qxf8+ Rxf8
43.Rg1 Bc8 44.Rxg6 Bd7 45.Rg7 Be8
46.Kg4 Rh8 47.f7 Bxf7 48.Rxf7 Rg8+
49.Kh5 Rg1 50.Rb7 Kc8 (31.609.631.128) 3143
39 167:36 +6.27 37...Qd7 38.Qc3 Qh7 39.Qa3 Qh6+
40.Ke2 Qh5+ 41.Ke3 Qh6+ 42.Kf3 Qf8
43.Qxf8+ Rxf8 44.Rg1 Bc8 45.Rxg6 Bd7
46.Rg7 Be8 47.Kg4 Rh8 48.f7 Bxf7
49.Rxf7 Rg8+ 50.Kh5 Rg1 (31.609.631.128) 3143
39 167:36 +6.35 37...Qf8 38.Qc3 Qb4 39.Qxb4 axb4
40.a5 b3 41.a6 b2 42.Rg1 b1Q 43.Rxb1 Ba8
44.Kc3 Kd7 45.Kb3 Kd8 46.Rc1 Kd7
47.Rg1 Ke8 48.Kb4 Kf7 49.Rc1 Rd8
50.Rc7+ Kf8 (31.609.631.128) 3143
38 167:36 +8.62 37...Ke8 38.Qc3 Rf8 39.Qa3 Qd7
40.Rg1 Rg8 41.h5 Qh7 42.Rf1 gxh5
43.f7+ Qxf7 44.Rxf7 Kxf7 45.Qf3+ Ke8
46.Qxh5+ Kd8 47.Qh7 Rg2+ 48.Ke3 Kc8
49.Qh3 Ra2 50.Qxe6+ Kb8 (31.609.631.128) 3143
38 167:36 +9.37 37...Ba8 38.Qc3 Qd7 39.Qa3 Ke8 40.h5 Bb7
41.Rf1 gxh5 42.f7+ Qxf7 43.Rxf7 Kxf7
44.Qf3+ Ke8 45.Qxh5+ Kd8 46.Qf7 Rg2+
47.Ke3 Bc8 48.Qa7 Ke8 49.Qxb6 Rg3+
50.Kf2 Rd3 (31.609.631.128) 3143
38 167:36 +10.54 37...Qe8 38.Qa3 Qf8 39.f7 Rh8
40.Qd6+ Qxd6 41.exd6 Kd7 42.Rc7+ Kxd6
43.Rxb7 Rf8 44.Ke3 e5 45.Rxb6+ Kc7
46.Rc6+ Kb7 47.dxe5 Rxf7 48.e6 Rf1
49.Kd4 Rd1+ 50.Kc5 d4 (31.609.631.128) 3143
38 167:36 +11.35 37...Bc8 38.Qc3 Qd7 39.Qa3 Rh8
40.Rc6 Qh7 41.Qd6+ Qd7 42.Qb8 Qb7
43.Rd6+ Ke8 44.Rxe6+ Kf7 45.Re7+ Qxe7
46.fxe7 Rg8 47.Qd6 Be6 48.Qxb6 Kxe7
49.Qc7+ Bd7 50.b6 Rf8 (31.609.631.128) 3143
[pgn]
[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "AlphaZero"]
[Black "Stockfish"]
[Result "1-0"]
[ECO "C11"]
1.d4 e6 2.e4 d5 3.Nc3 Nf6 4.e5 Nfd7 5.f4 c5 6.Nf3 cxd4 7.Nb5 Bb4+ 8.Bd2
Bc5 9.b4 Be7 10.Nbxd4 Nc6 11.c3 a5 12.b5 Nxd4 13.cxd4 Nb6 14.a4 Nc4 15.Bd3
Nxd2 16.Kxd2 Bd7 17.Ke3 b6 18.g4 h5 19.Qg1 hxg4 20.Qxg4 Bf8 21.h4 Qe7 22.
Rhc1 g6 23.Rc2 Kd8 24.Rac1 Qe8 25.Rc7 Rc8 26.Rxc8+ Bxc8 27.Rc6 Bb7 28.Rc2
Kd7 29.Ng5 Be7 30.Bxg6 Bxg5 31.Qxg5 fxg6 32.f5 Rg8 33.Qh6 Qf7 34.f6 Kd8
35.Kd2 Kd7 36.Rc1 Kd8 37.Qe3 Qf8 38.Qc3 Qb4 39.Qxb4 axb4 40.Rg1 b3 41.Kc3
Bc8 42.Kxb3 Bd7 43.Kb4 Be8 44.Ra1 Kc7 45.a5 Bd7 46.axb6+ Kxb6 47.Ra6+ Kb7
48.Kc5 Rd8 49.Ra2 Rc8+ 50.Kd6 Be8 51.Ke7 g5 52.hxg5 1-0
[/pgn]