How many engines can solve this position?

[Damir]

[d]8/8/8/1k3p2/p1p1pPp1/PpPpP1Pp/1P1P3P/QNK2NRR w - - 0 1

[Damir]

From human point of view this should be a draw regardless of what White plays... All Black has to do is move his King and not take the rook if White plays his rook to g2... Than draw is secured...

[Damir]

It seems I was wrong.. White can win this after all... if it follows certain procedure

Here is the Sollution:

[mvanthoor]

From human point of view this should be a draw regardless of what White plays... All Black has to do is move his King and not take the rook if White plays his rook to g2... Than draw is secured...

Not correct. White can play the rooks to the middle of the board (to e1 and d1, moving around the king). They are now ready for a break in the middle of the position. Then you can sacrifice the queen with Qa2xb3, and either the a-pawn or c-pawn become free. (Taking with axb2 keeps the position closed as long as possible for black.) Still, the knight gets out through either a3 or c3 after the a or c pawn is pushed, and then black will be busted.

edit: I see you linked a movie that essentially showcases the above solution. Any chess player of club strength will almost instantly see this solution.

This isn't actually chess; this is a sliding puzzle where at some point you start to rip out the pieces to make progress.

My engine almost instantly sees the solution with Rg1-g2, where it assumes black will capture the rook, due to the fact that it is an enormous material gain:

Code: Select all

info score cp 1919 depth 20 seldepth 29 time 600 nodes 3282189 nps 5470315 hashfull 30 pv g1g2 h3g2 h1g1 g2f1q g1f1 b5a5 f1h1 a5b5 h2h3 g4h3 h1h3 b5a6 h3h6 a6a5 h6d6 a5b5 d6d5 b5a6 d5f5 a6b6

I'm sure more advanced engines that can see a lot deeper will at some point see the queen sacrifice.

[peter]

It seems I was wrong.. White can win this after all... if it follows certain procedure

Here is the Sollution:

At YACPDB:

https://www.yacpdb.org/#search/ODg4MWsz ... LzEvMA==/1

[Chessqueen]

It seems I was wrong.. White can win this after all... if it follows certain procedure

Here is the Sollution:

At YACPDB:

https://www.yacpdb.org/#search/ODg4MWsz ... LzEvMA==/1

I did NOT even bothered to post any response, since the true will eventually come out, and it is much better when you let people find the answer by themselves

[Uri Blass]

From human point of view this should be a draw regardless of what White plays... All Black has to do is move his King and not take the rook if White plays his rook to g2... Than draw is secured...

Not correct. White can play the rooks to the middle of the board (to e1 and d1, moving around the king). They are now ready for a break in the middle of the position. Then you can sacrifice the queen with Qa2xb3, and either the a-pawn or c-pawn become free. (Taking with axb2 keeps the position closed as long as possible for black.) Still, the knight gets out through either a3 or c3 after the a or c pawn is pushed, and then black will be busted.

edit: I see you linked a movie that essentially showcases the above solution. Any chess player of club strength will almost instantly see this solution.

This isn't actually chess; this is a sliding puzzle where at some point you start to rip out the pieces to make progress.

My engine almost instantly sees the solution with Rg1-g2, where it assumes black will capture the rook, due to the fact that it is an enormous material gain:

Code: Select all

info score cp 1919 depth 20 seldepth 29 time 600 nodes 3282189 nps 5470315 hashfull 30 pv g1g2 h3g2 h1g1 g2f1q g1f1 b5a5 f1h1 a5b5 h2h3 g4h3 h1h3 b5a6 h3h6 a6a5 h6d6 a5b5 d6d5 b5a6 d5f5 a6b6

I'm sure more advanced engines that can see a lot deeper will at some point see the queen sacrifice.

I do not agree that Any chess player of club strength will almost instantly see this solution.
It is not something trivial that you can be sure in some seconds that white wins and a plan take many moves when white needs to allow bxa2 and a1Q for black.

[Ajedrecista]

Hello Peter:

It seems I was wrong.. White can win this after all... if it follows certain procedure

Here is the Sollution:

At YACPDB:

https://www.yacpdb.org/#search/ODg4MWsz ... LzEvMA==/1

This position has been posted several times at TalkChess and even at Grotesque (chess) article at Wikipedia. It was also compiled at EG magazine, issue No. 66 (Vol. IV), problem 4402 (pages 473 and 474):

http://www.arves.org/arves/images/PDF/EG_PDF/eg66.pdf

A similar P-formation, but with a different idea, is to be found in EG44.2585.

http://www.arves.org/arves/images/PDF/EG_PDF/eg44.pdf

[d]3n1rbn/Kp3p2/pPp1pPp1/P1PpP1Pp/3P2kP/8/8/4BR2 w - - 0 1

No. 2585
Z. Gostinsky
5 7th Commend, Petrov Memorial Ty, 1975

Win

No. 2585.
Z. Gostinsky. A Czech composer.
1. Ka8 Bh7 2. Kb8 Re8 3. Kc8 Rg8 4. Kc7 Re8 5. Kd6 Rf8 6. Kd7 Rg8 7. Ke7 Kh3 8. Rg1 Kh2 9. Rg3 Kh1 10. Bd2 Kh2 11. Bf4 Kh1 12. Be3 Kh2 13. Bf2 Kh1 14. Bg1.

SF 13 sees the winning line in few seconds:

Code: Select all

FEN: 3n1rbn/Kp3p2/pPp1pPp1/P1PpP1Pp/3P2kP/8/8/4BR2 w - - 0 1 

Stockfish_13_win_x64_modern:
Found 145 tablebases
NNUE evaluation using nn-62ef826d1a6d.nnue enabled
[...]
 51/10	00:01	   4.285.463	2.802.788	 0,00	Ka7b8 Bg8h7 Kb8c7 Rf8g8 Kc7d7 Rg8f8
 52/47+	00:03	   9.757.798	3.034.141	+13,70	Ka7a8
 52/55	00:04	  14.572.963	3.279.244	+17,47	Ka7a8 Bg8h7 Ka8b8 Bh7g8 Kb8c8 Kg4h3 Rf1g1 Kh3h2 Be1f2 Bg8h7 Kc8d7 Kh2h3 Rg1g3+ Kh3h2 Kd7e7 Rf8g8 Ke7d6 Rg8e8 Bf2e1 Kh2h1 Kd6d7 Re8f8 Be1d2 Kh1h2 Bd2f4 Rf8g8 Kd7e7 Kh2h1 Bf4e3 Kh1h2 Be3f2 Kh2h1 Bf2g1 Rg8g7 f6xg7 f7f5 g7xh8R f5f4 Rg3f3 Kh1xg1 Rh8xh7 Kg1g2 Rf3xf4 Kg2g3 Rf4f6 Kg3xh4 Ke7xd8 Kh4g4 Rh7xb7 Kg4g3 Rb7h7 Kg3h3 Rf6xe6
[...]
 57/48	00:55	 251.791.456	4.588.622	+M24	Ka7a8 Rf8e8 Ka8b8 Bg8h7 Kb8c8 Re8g8 Kc8c7 Rg8e8 Kc7d6 Kg4h3 Rf1g1 Kh3h2 Rg1g3 Kh2h1 Kd6d7 Re8f8 Kd7e7 Rf8g8 Be1d2 Kh1h2 Bd2f4 Kh2h1 Bf4e3 Kh1h2 Be3f2 Kh2h1 Bf2g1 Rg8g7 f6xg7 f7f5 g7xh8Q Bh7g8 Bg1f2 Nd8f7 Qh8xg8 Nf7h8 Ke7d7 Kh1h2 Qg8xh8 Kh2h1 Qh8f6 Kh1h2 Qf6xe6 Kh2h1 Bf2g1 f5f4 Qe6h3+
[...]
 95/48	04:46	1.407.856.444	4.917.159	+M24	Ka7a8 Rf8e8 Ka8b8 Bg8h7 Kb8c8 Re8g8 Kc8c7 Rg8e8 Kc7d6 Kg4h3 Rf1g1 Kh3h2 Rg1g3 Kh2h1 Kd6d7 Re8f8 Kd7e7 Rf8g8 Be1d2 Kh1h2 Bd2f4 Kh2h1 Bf4e3 Kh1h2 Be3f2 Kh2h1 Bf2g1 Rg8f8 Ke7xf8 Bh7g8 Kf8e8 Bg8h7 Ke8xd8 Bh7g8 Kd8c7 Bg8h7 Kc7xb7 Bh7g8 Kb7xa6 Bg8h7 b6b7 Bh7g8 b7b8Q Bg8h7 Qb8b2 Bh7g8 Qb2g2+

Regards from Spain.

Ajedrecista.

[MikeB]

[pgn][Event "?"]
[Site "?"]
[Date "?"]
[Round "-"]
[White "?"]
[Black "?"]
[Result "*"]
[FEN "8/8/8/1k3p2/p1p1pPp1/PpPpP1Pp/1P1P3P/QNK2NRR w - - 0 1"]
[SetUp "1"]


1. Kd1 Kc5 2. Rg2 Kd6 3. Re2 Kc6 4. Ke1 Kc5 5. Rg1 Kd6 6. Kf2 Kc5 7. Re1
Kd6 8. Rg2 Kd5 9. Rd1 Kd6 10. Rc1 Kc7 11. Ke1 Kc6 12. Re2 Kb6 13. Kd1 Kc7
14. Re1 Kb6 15. Rc2 Kb7 16. Kc1 Kb6 17. Qa2 Kb5[/pgn]

This is how BD would play it if I just make the first move Kd1:

[d]8/8/8/1k3p2/p1p1pPp1/PpPpP1Pp/QPRP3P/1NK1RN2 w - - 34 18


dep score nodes time (not shown: tbhits knps seldep)
46 +99.57 23.9G 3:37.86 Qxb3+ axb3 a4+ Kxa4 Na3 Ka5 Kb1 bxc2+ Ka2 Kb6 Nxc4+ Kc7 b3 Kd8 Kb2 Kc7 Rc1 Kc6 Ra1 c1=B+ Kxc1 Kb7 Ra5 Kb8 Rc5 Ka7 Rc7+ Kb8 Rd7 Kc8 Rf7 Kd8 b4 Ke8 Ne5 Kd8 b5 Kc8 b6 Kb8 Nc6+ Kc8 b7#
45 +99.59 21.9G 3:18.84 Qxb3+ axb3 a4+ Kxa4 Na3 Ka5 Kd1 bxc2+ Kc1 Kb6 Nxc4+ Kc7 b3 Kb7 Kb2 Kc7 Ra1 Kb7 Ra2 c1=B+ Kxc1 Kb8 Ra6 Kc7 Ra7+ Kd8 b4 Kc8 Ne5 Kb8 Rd7 Kc8 Rf7 Kb8 b5 Kc8 b6 Kd8 b7 Ke8 b8=Q#
45 +99.51! 20.3G 3:02.91 Qxb3+!
45 +99.35? 20.1G 3:00.60 Qxb3+ axb3?
44 +99.51 19.2G 2:51.57 Qxb3+ axb3 a4+ Kxa4 Na3 Ka5 Kd1 bxc2+ Kc1 Ka4 Nxc4 Kb5 b3 Kc6 Kb2 Kc7 Ra1 Kb7 Ra4 Kb8 Ra6 c1=Q+ Kxc1 Kb7 Ra3 Kb8 Ra5 Kc8 Ra7 Kb8 Rh7 Kc8 Ne5 Kd8 b4 Kc8 Rd7 Kb8 Rf7 Ka8 b5 Kb8 b6 Ka8
43 +99.57 14.8G 2:07.04 Qxb3+ axb3 a4+ Kxa4 Na3 Ka5 Kd1 bxc2+ Kc1 Kb6 Nxc4+ Kb7 b3 Kc7 Kb2 Kc8 Ra1 c1=Q+ Kxc1 Kb7 Ra5 Kb8 Re5 Kc7 Re7+ Kc8 Rg7 Kb8 Rf7 Kc8 Ne5 Kd8 b4 Kc8 b5 Kb8 b6 Ka8 c4 Kb8 Nc6+ Kc8
43 +99.49! 14.5G 2:04.16 Qxb3+!
43 +99.33? 14.5G 2:03.74 Qxb3+ axb3?
42 +99.49 14.1G 2:00.50 Qxb3+ axb3 a4+ Kxa4 Na3 Ka5 Kb1 bxc2+ Kc1 Kb6 Nxc4+ Kc7 b3 Kd8 Kb2 Kc8 Ra1 c1=Q+ Kxc1 Kb7 Ra3 Kb8 Ra6 Kb7 Rb6+ Kc7 Rg6 Kd7 Rg7+ Ke6 Rh7 Kf6 Ne5 Ke6 b4 Kd6 Rd7+ Ke6 b5 Kf6 c4 Ke6 c5
41 +99.53 9.23G 1:12.10 Qxb3+ axb3 a4+ Kxa4 Na3 Ka5 Kb1 dxc2+ Kc1 Kb6 Nxc4+ Kc7 Na5 Kd7 Nxb3 Kd6 Nd4 Kd7 Nxf5 Ke6 Nd4+ Kd7 Kxc2 Kd8 Re2 Kd7 f5 Ke7 Nb3 Kf7 Rf2 Kf6 Nd4 Ke7 f6+ Kf7 c4 Kg6 f7 Kg7 f8=Q+ Kh7 Qe7+ Kg6 Rf6+ Kh5 Qe5#
41 +98.67! 8.47G 1:04.68 Qxb3+!
41 +99.05? 8.28G 1:02.87 Qxb3+ axb3?
41 +99.09! 8.09G 1:01.18 Qxb3+!
41 +98.71! 5.90G 0:44.31 Qxb3+!
41 +98.45! 5.62G 0:42.05 Qxb3+!
41 +99.97! 4.12G 0:31.72 Qxb3+!
40 +99.15 3.90G 0:29.73 Qxb3+ axb3 a4+ Ka5 Na3 Kxa4 Nxc4 Kb5 Ne5 Kc5 Nf7 bxc2 Nh6 Kd5 Nxf5 Kc5 Nh6 Kd6 Nxg4 Ke6 Nf2 Kd5 g4 Kc6 Nxe4 Kc7 Ng5 Kb6 Ne6 Ka5 e4 Ka6 Ng5 Ka5 e5 Ka6 e6 Ka5 Nxh3 Ka6
40 +99.16! 3.86G 0:29.42 Qxb3+!
40 +99.10? 3.83G 0:29.16 Qxb3+ axb3?
39 +99.16 3.82G 0:28.98 Qxb3+ axb3 a4+ Ka5 Na3 Kxa4 Nxc4 Kb5 Nd6+ Kc6 Nxf5 Kc7 Kd1 bxc2+ Kc1 Kc6 Nh6 Kd6 Nxg4 Kc6 Nf6 Kb7 Nxe4 Ka7 Ng5 Ka8 e4 Kb7 Nxh3 Kc8 e5 Kd7 g4 Ke8 Ng5 Kd8 e6 Ke7 Nh3
38 +99.15 3.71G 0:28.08 Qxb3+ axb3 a4+ Ka5 Na3 Kxa4 Nxc4 Kb5 Nd6+ Kc6 Nxf5 Kc7 Kd1 bxc2+ Kc1 Kc6 Nh6 Kd6 Nxg4 Ke6 Nf2 Kd5 g4 Ke6 Nxe4 Ke7 Ng5 Kd7 e4 Kd6 e5+ Kd7 e6+ Kc7 e7 Kb7 Nxh3 Kb6 Re6+ Kc7 e8=Q
37 +99.11! 3.71G 0:28.05 Qxb3+!
37 +98.91? 3.71G 0:28.05 Qxb3+ axb3?
37 +99.15! 3.70G 0:27.99 Qxb3+!
37 +99.05? 3.70G 0:27.94 Qxb3+ axb3?
36 +99.15 3.68G 0:27.77 Qxb3+ axb3 a4+ Ka5 Na3 Kxa4 Nxc4 Kb5 Ne5 bxc2 Nf7 Kc6 Nh6 Kd6 Nxf5+ Kc7 Nh6 Kd6 Nxg4 Ke6 Nf2 Kd5 g4 Kc4 Nxe4 Kb5 Ng5 Kc6 e4 Kc7 e5 Kb7 e6 Ka6 e7 Kb7 Nxh3 Ka7 Re5
36 +99.10! 3.68G 0:27.76 Qxb3+!
36 +98.96? 3.68G 0:27.76 Qxb3+ axb3?
36 +99.12! 3.56G 0:26.80 Qxb3+!
35 +99.07 3.52G 0:26.43 Qxb3+ axb3 a4+ Ka5 Na3 Kxa4 Nxc4 Kb5 Nd6+ Kc6 Nxf5 Kb6 Kd1 bxc2+ Kc1 Kc6 Nh6 Kd5 Nxg4 Ke6 Nf2 Ke7 Nxe4 Kf8 Ng5 Ke7 e4 Kd7 g4 Kd8 Nxh3 Kc7 e5 Kc6 e6 Kc5 e7
35 +97.63! 3.44G 0:25.79 Qxb3+!
35 +95.20? 3.43G 0:25.71 Qxb3+ axb3?
35 +98.76! 3.42G 0:25.69 Qxb3+!
35 +97.98! 3.39G 0:25.43 Qxb3+!
35 +97.38! 3.37G 0:25.30 Qxb3+!
35 +96.90! 3.33G 0:24.93 Qxb3+!
35 +96.53! 3.32G 0:24.86 Qxb3+!
35 +96.25! 3.31G 0:24.76 Qxb3+!
35 +96.03! 3.29G 0:24.63 Qxb3+!
35 +95.87! 3.29G 0:24.61 Qxb3+!
35 +95.76! 3.29G 0:24.58 Qxb3+!
35 +95.68! 3.28G 0:24.56 Qxb3+!
35 +95.62! 3.27G 0:24.47 Qxb3+!
34 +95.57 3.18G 0:23.78 Qxb3+ axb3 a4+ Ka5 Na3 Kxa4 Nxc4 Kb5 Nd6+ Ka5 Kb1 bxc2+ Kc1 Kb6 Nxf5 Kc7 Nh6 Kd6 Nxg4 Kc6 Nf6 Kc5 Nh7 Kb5 Ng5 Kb6 Nxe4 Kb7 Ng5 Ka6 g4 Kb7 e4
34 +90.11! 3.01G 0:22.43 Qxb3+!
34 +80.48! 2.95G 0:21.94 Qxb3+!
34 +72.79! 2.91G 0:21.58 Qxb3+!
34 +66.63! 2.89G 0:21.41 Qxb3+!
34 +61.73! 2.88G 0:21.34 Qxb3+!
34 +57.80! 2.87G 0:21.24 Qxb3+!
34 +54.68! 2.86G 0:21.16 Qxb3+!
34 +52.20! 2.84G 0:21.01 Qxb3+!
34 +50.22! 2.82G 0:20.84 Qxb3+!
34 +48.66! 2.79G 0:20.62 Qxb3+!
34 +47.41! 2.77G 0:20.44 Qxb3+!
34 +46.43! 2.73G 0:20.14 Qxb3+!
34 +45.65! 2.70G 0:19.83 Qxb3+!
34 +45.05! 2.68G 0:19.73 Qxb3+!
34 +44.57! 2.65G 0:19.46 Qxb3+!
34 +44.20! 2.63G 0:19.28 Qxb3+!
34 +43.75! 2.59G 0:18.96 Qxb3+!
34 +43.64! 2.58G 0:18.89 Qxb3+!
34 +43.52? 2.56G 0:18.74 Qxb3+ axb3?
34 +43.67! 2.56G 0:18.74 Qxb3+!
34 +43.63! 2.54G 0:18.59 Qxb3+!
34 +43.61! 2.52G 0:18.46 Qxb3+!
33 +43.58 2.47G 0:18.07 Qxb3+ axb3 a4+ Kc5 Na3 Kd5 Kb1 bxc2+ Kc1 Kc6 Nxc4 Kd5 Ne5 Kc5 Nf7 Kc4 Nd6+ Kd5 Nxf5 Ke6 Nh6 Kd7 Nxg4 Kc7 Nf2 Kd6 Nxe4+ Ke6 Nf2 Kd5 a5 Kc4 Ng4 Kd5 Ne5 Kc5 Nxd3+ Kc4 Kxc2 Kb5 Nf2 Kc6 Nxh3 Kb5 a6 Kb6 a7 Kxa7 e4 Kb6 e5 Kc7
33 +43.08! 2.41G 0:17.56 Qxb3+!
33 +42.47! 2.37G 0:17.30 Qxb3+!
33 +42.00! 2.28G 0:16.63 Qxb3+!
33 +41.63! 2.20G 0:16.04 Qxb3+!
33 +41.35! 2.14G 0:15.51 Qxb3+!
33 +41.13! 2.12G 0:15.35 Qxb3+!
33 +40.73! 2.11G 0:15.33 Qxb3+!
33 +40.67! 2.11G 0:15.31 Qxb3+!
33 +40.63! 2.11G 0:15.30 Qxb3+!
33 +40.60! 2.11G 0:15.30 Qxb3+!
32 +40.48 2.10G 0:15.26 Qxb3+ axb3 a4+ Kc5 Na3 Kd5 Kb1 bxc2+ Kc1 Kc5 a5 Kc6 a6 Kb6 a7 Kxa7 Nxc4 Ka8 Nd6 Kb8 Nxf5 Kc7 Nh6 Kd6 Nxg4 Kc6 Nf6 Kc5 Nxe4+ Kd5 Nf6+ Kd6 Ng4 Ke6 Ne5 Kf5 Nxd3 Ke4 Nf2+ Kf3 Nxh3 Kg2 f5 Kxh3 Kxc2 Kg4 f6 Kh3
32 +36.70! 2.00G 0:14.48 Qxb3+!
32 +32.79! 1.97G 0:14.21 Qxb3+!
32 +29.67! 1.94G 0:13.96 Qxb3+!
32 +27.19! 1.90G 0:13.66 Qxb3+!
32 +25.22! 1.86G 0:13.40 Qxb3+!
32 +23.65! 1.84G 0:13.24 Qxb3+!
32 +22.41! 1.81G 0:12.99 Qxb3+!
32 +21.42! 1.79G 0:12.85 Qxb3+!
32 +20.65! 1.77G 0:12.74 Qxb3+!
32 +20.04! 1.75G 0:12.55 Qxb3+!
32 +19.57! 1.73G 0:12.40 Qxb3+!
32 +19.20! 1.71G 0:12.29 Qxb3+!
32 +18.91! 1.66G 0:11.96 Qxb3+!
32 +18.47! 1.65G 0:11.89 Qxb3+!
32 +18.39! 1.61G 0:11.61 Qxb3+!
32 +18.33! 1.61G 0:11.59 Qxb3+!
32 +18.29! 1.61G 0:11.58 Qxb3+!
32 +18.26! 1.60G 0:11.51 Qxb3+!
31 +18.23 1.59G 0:11.48 Qxb3+ axb3 a4+ Kc5 Na3 Kd5 Kb1 dxc2+ Kc1 Kc5 a5 Kc6 a6 Kb6 Nxc4+ Kxa6 Nd6 Ka7 Nxf5 Kb7 Nd4 Kc7 Re2 Kb6 Nxb3 Kb5 Nd4+ Ka6 Nf5 Kb7 Re1 Kb6 Nd6 Kc6 Nxe4 Kb5 Nf2 Kc4 Kxc2
31 +17.95! 1.55G 0:11.17 Qxb3+!
31 +17.67! 1.50G 0:10.78 Qxb3+!
31 +17.22! 1.47G 0:10.59 Qxb3+!
31 +17.14! 1.42G 0:10.25 Qxb3+!
31 +17.08! 955.6M 0:07.12 Qxb3+!
31 +17.04! 953.9M 0:07.11 Qxb3+!
31 +17.02! 874.7M 0:06.58 Qxb3+!
30 +16.99 811.9M 0:06.16 Qxb3+ axb3 a4+ Kc5 Na3 Kd5 Kb1 dxc2+ Kc1 Kc5 a5 Kc6 a6 Kb6 Nxc4+ Kxa6 Re2 Kb5 Nd6+ Kc5 Nxf5 Kc4 Nd4 Kd5 Nxb3 Ke6 Re1 Kd6 Nd4 Ke7 Nf5+ Kd7 Re2 Kc8 Kxc2 Kb7 Re1 Kc7 Nh6 Kc8
30 +16.69! 803.9M 0:06.10 Qxb3+!
30 +16.61! 750.9M 0:05.74 Qxb3+!
30 +16.56! 723.9M 0:05.54 Qxb3+!
30 +16.51! 709.7M 0:05.44 Qxb3+!
30 +16.49! 701.3M 0:05.38 Qxb3+!
29 +16.46 690.8M 0:05.31 Qxb3+ axb3 a4+ Kc5 Na3 Kd5 Kb1 dxc2+ Kc1 Kc5 a5 Kc6 a6 Kb6 Nxc4+ Kxa6 Nd6 Ka5 Nxf5 Kb6 Nd4 Kc7 Nxb3 Kd6 Nd4 Kd7 Nf5 Ke8 Nh6 Kf8 Nxg4 Ke7 Kxc2 Ke8 Nf2
29 +16.27! 659.8M 0:05.08 Qxb3+!
29 +15.99! 591.1M 0:04.59 Qxb3+!
29 +15.54! 511.8M 0:04.02 Qxb3+!
29 +15.46! 477.3M 0:03.77 Qxb3+!
29 +15.40! 459.0M 0:03.63 Qxb3+!
29 +15.36! 444.7M 0:03.51 Qxb3+!
29 +15.33! 437.1M 0:03.45 Qxb3+!
28 +15.31 424.2M 0:03.34 Qxb3+ axb3 a4+ Kc5 Na3 Kd5 Nb5 Ke6 Nd4+ Kd7 Nxf5 Ke6 Nh6 Kd7 Nxg4 Kc6 Ne5+ Kb6 Kb1 Kc5 Rcc1 Kd5 g4 Kc5 Ng3 Kd5 Rg1 Kc5 Rgf1 Kd5 Rfe1 Kd6 Nxc4+ Kc6 Na5+ Kd5 Rg1 Kd6 Rgd1
27 +13.70 228.0M 0:01.77 Qxb3+ axb3 a4+ Kc5 Na3 Kd5 Nb5 Kc6 Nd4+ Kc5 Nxf5 Kb6 Nd6 Kc6 Nf7 Kd5 Ne5 Kc5 Kb1 dxc2+ Kc1 Kd5 Nxg4 Kd6 Ne5 Kc5 g4 Kd6 Nxc4+ Ke7 Na5
26 +13.00 147.4M 0:01.13 Qxb3+ axb3 a4+ Kc5 Na3 Kd5 Kb1 dxc2+ Kc1 Kc5 a5 Kc6 a6 Kb6 a7 Kxa7 Nxc4 Kb8 Nd6 Kc7 Nxf5 Kd8 Nd4 Ke8 Nxb3 Kf7 Kxc2 Kf6 Nc5 Kf5
25 +12.26 96.5M 0:00.73 Qxb3+ axb3 a4+ Kc6 Na3 Kd5 Nb5 dxc2 Nd4 Kc5 Nxf5 Kb6 Nd6 Kc5 Nf7 Kb6 Ne5 Ka5 Nxc4+ Kxa4 Nd6 Ka5 Nf5 Ka6 Nd4 Kb7 Nxb3 Kb6 Kxc2 Kc7 Nc5 Kc6
24 +12.11 95.2M 0:00.72 Qxb3+ axb3 a4+ Kc6 Na3 Kd5 Nb5 Ke6 Nd4+ Kd7 Nxf5 Kc6 Nh6 Kb6 Nxg4 Kc5 Kd1 dxc2+ Kc1 Kd6 Ne5 Kd5 g4 Kc5 Ng3 Kd5 Rg1 Kc5 Rh1 Kd5 Re1 Ke6 Nxc4 Ke7 Na5
23 +11.83 74.4M 0:00.56 Qxb3+ axb3 a4+ Kc5 Na3 dxc2 Nb5 Kc6 Nd4+ Kb6 Nxf5 Ka6 Nd6 Ka5 Nxc4+ Ka6 Re2 Ka7 Na5 Kb6 Nxb3 Kc6 Nd4+ Kb6 Nf5 Kb7 Re1 Kb6 Kxc2 Kc5 Nh6 Kd6 Nxg4
22 +11.64 58.4M 0:00.43 Qxb3+ axb3 a4+ Kb6 Na3 Kc5 Nb5 Kc6 Nd4+ Kc5 Kb1 dxc2+ Kc1 Kb6 Nxf5 Ka5 Nd6 Kxa4 Nxc4 Kb5 Nd6+ Kc5 Nxe4+ Kb6 Nf2 Ka5 d3 Kb5 Nxg4 Kc6 Nf2
21 +11.47 52.1M 0:00.38 Qxb3+ axb3 a4+ Kc5 Na3 Kd5 Kd1 bxc2+ Kc1 Kc5 Nb5 Kb6 Nd6 Ka5 Nxc4+ Kxa4 Nd6 Kb3 Nxf5 Kc4 Nd6+ Kd5 Nf7 Ke6 Nh6 Kf6 Nxg4+ Ke6 Nf2 Kd7
20 +11.13 43.0M 0:00.31 Qxb3+ axb3 a4+ Kxa4 Na3 dxc2 Nxc4 Kb5 Nd6+ Kc5 Nxf5 Kd5 Nd4 Kc5 Nxb3+ Kb5 Re2 Kc4 Kxc2 Kd5 Nd4 Kd6 Nf5+ Kd7 Nh6 Kd8 Nxg4
19 +10.90 33.0M 0:00.23 Qxb3+ axb3 a4+ Kc5 Na3 bxc2 Nb5 Kc6 Nd4+ Kb7 Nxf5 Kb6 Nd6 Kc5 Nf7 Kb6 Ne5 Ka5 Nxc4+ Kxa4 Ne5 Kb5 Nxg4 Kc5 Nf6 Kc6 Nxe4
18 +9.62 13.4M 0:00.09 Qxb3+ axb3 a4+ Kc6 Na3 Kd5 Kb1 bxc2+ Kc1 Kc5 Nb5 Kb6 Nd6 Ka5 Nxc4+ Kxa4 Nd6 Kb3 Nxf5 Kc4 Nh6 Kd5 Nxg4 Kc5 Nf6 Kb5
17 +9.45 11.0M 0:00.08 Qxb3+ axb3 a4+ Kc6 Na3 Kd5 Nb5 dxc2 Nd4 Kc5 Nxf5 Kb6 Nd6 Kc5 Nf7 Kb6 Ne5 Ka5 Nxc4+ Kxa4 Nd6 Ka5 Nxe4 Kb6 Nf2 Kc5 d4+ Kd6 Nxg4
16 +9.24 9.08M 0:00.06 Qxb3+ axb3 a4+ Kc5 Na3 dxc2 Nb5 Kc6 Nd4+ Kd7 Nxf5 Kc7 Nh6 Kb6 Nxg4 Ka5 Ne5 Kxa4 Nxc4
15 +9.05 6.53M 0:00.04 Qxb3+ axb3 a4+ Kc5 Na3 bxc2 Nb5 Kb6 Nd6 Ka5 Nxc4+ Kxa4 Nd6 Ka5 Nxf5 Kb6 Nd6 Kc7 Nxe4 Kc6
14 +8.94 4.73M 0:00.03 Qxb3+ axb3 a4+ Kc5 Na3 Kc6 Nxc4 Kd5 Na3 bxc2 b4 Kd6 Nc4+ Kc7 b5 Kd7 a5 Ke6 Ne5
13 +8.69 4.06M 0:00.03 Qxb3+ axb3 a4+ Kc6 Na3 Kd5 Kd1 bxc2+ Kc1 Kd6 Nxc4+ Kc5 Ne5 Kd6 b4 Kc7 a5 Kd8 b5
12 +8.43 1.70M 0:00.01 Qxb3+ axb3 a4+ Kc5 Na3 bxc2 Nb5 Kb6 Nd6 Ka5 Nxc4+ Kxa4 Nd6 Kb3 Nxf5 Kc4 b4 Kb3
11 +8.32 1.08M 0:00.01 Qxb3+ axb3 a4+ Kc6 Na3 Kc5 a5 bxc2 a6 Kb6 Nxc4+ Kxa6 Nd6 Kb6
10 +8.09 371085 0:00.00 Qxb3+ axb3 a4+ Kxa4 Na3 bxc2 Nxc4 Kb5 Nd6+ Kc5 Nxf5 Kc6 b4
9 +7.93 201968 0:00.00 Qxb3+ axb3 a4+ Kb6 a5+ Kc5 Na3 bxc2 a6 Kb6
8 +7.80 107819 0:00.00 Qxb3+ axb3 a4+ Kxa4 Na3 bxc2 Nxc4 Kb3
7 +7.67 46646 0:00.00 Qxb3+ axb3 a4+ Kc5 Na3 Kd5 Nb5 bxc2
6 +7.66 41768 0:00.00 Qxb3+ axb3 a4+ Kc6 Na3 Kc5
5 +7.66 35902 0:00.00 Qxb3+ axb3 a4+ Kc5 Na3 dxc2
4 +10.89 28862 0:00.00 Qxb3+ axb3 a4+ Kxa4
3 +11.11 24059 0:00.00 Qxb3+ axb3 a4+ Kxa4
2 +11.33 20603 0:00.00 Qxb3+ axb3
1 +7.65 15957 0:00.00 Qxb3+ axb3

[MikeB]

[d]8/8/8/1k3p2/p1p1pPp1/PpPpP1Pp/1P1P3P/QNK2NRR w - - 0 1

BD will find a win from the the get go if you give it enough time


49 +4.18! 19.4G 3:36.77 Kd1!
49 +4.10! 19.4G 3:35.90 Kd1!
49 +4.04? 19.4G 3:35.89 Kd1 Kc5?
49 +4.12! 19.2G 3:34.38 Kd1!
49 +4.09! 19.2G 3:34.33 Kd1!
48 +4.17 19.1G 3:33.46 Kd1 Kc6 Rg2 Kd6 Ke1 Kc6 Re2 Kc7 Rg1 Kc6 Kf2 Kb7 Re1 Ka8 Rh1 Kb7 Rc1 Kc6 Rd1 Kc5 Rg1 Kd5 Re1 Ke6 Rg2 Ke7 Rd1 Kd6 Rc1 Kd5 Ke1 Ke6 Re2 Kd6 Kd1 Ke6 Re1 Ke7 Rc2 Kd6 Kc1 Kc6 Qa2 bxa2 b4 a1=Q Rb2 Kd6 b5 Kc7 b6+ Kb7 Rd1 Kb8 b7 Qxb2+ Kxb
48 +4.20! 17.4G 3:14.30 Kd1!
48 +4.15? 17.2G 3:12.08 Kd1 Kc5?
48 +4.21? 17.1G 3:11.76 Kd1 Kc5?
48 +4.25? 17.1G 3:11.74 Kd1 Kc5?
48 +4.31! 16.6G 3:05.63 Kd1!
47 +4.28 16.2G 3:02.07 Kd1 Kc6 Ke1 Kb5 Rg2 Kb6 Re2 Kc7 Rg1 Kd6 Kf2 Kd7 Re1 Ke6 Rg2 Ke7 Rd1 Ke6 Rc1 Ke7 Ke1 Kd6 Rf2 Kc6 Re2 Kd6 Kd1 Kc6 Re1 Kd6 Rc2 Kc7 Kc1 Kb6 Qa2 bxa2 b4 a1=Q Rb2 Kb5 Rd1 Kc6 b5+ Kb6 Re1 Kc7 b6+ Kb7 Rd1 Kc8 b7+ Kb8 Re1 Qxb2+ Kxb2 Kxb7
47 +4.20! 14.8G 2:45.79 Rg2!
47 +4.12! 14.3G 2:40.79 Rg2!
47 +4.08? 14.3G 2:40.76 Rg2 Kc6?
47 +4.13? 13.9G 2:36.92 Rg2 Kc6?
47 +4.15? 13.9G 2:36.42 Rg2 Kc6?
46 +4.09 13.8G 2:35.12 Rg2 Kc5 Kd1 Kd6 Ke1 Ke7 Rhg1 Kf7 Rf2 Kf8 Re2 Ke7 Kf2 Kd7 Re1 Ke7 Rg2 Kd7 Rc1 Kc6 Ke1 Kd7 Re2 Ke6 Kd1 Kf7 Re1 Ke7 Rc2 Kd7 Kc1 Ke6 Qa2 bxa2 b4 a1=Q Rb2 Ke7 b5 Kd7 b6 Kc8 b7+ Kb8 Rd1 Qxb2+ Kxb2 Kxb7 Rc1 Kc6 Rc2 dxc2 Kxc2 Kc7 d3 cxd
46 +4.04! 13.6G 2:32.80 Rg2!
46 +4.00! 13.2G 2:29.03 Rg2!
46 +3.98? 13.2G 2:29.01 Rg2 Kb6?
45 +4.00 13.2G 2:28.52 Rg2 Ka6 Kd1 Kb7 Rhg1 Ka6 Ke1 Kb5 Rf2 Kb6 Re2 Ka6 Kf2 Kb7 Rg2 Kb6 Re1 Kc7 Rc1 Kd7 Ke1 Kd6 Re2 Kc7 Kd1 Kb7 Re1 Ka8 Rc2 Kb7 Kc1 Kc7 Qa2 bxa2 b4 a1=Q Rb2 Kc6 b5+ Kb6 Rd1 Kc7 b6+ Kb7 Re1 Kc6 b7 Qxb2+ Kxb2 Kxb7 Rc1 Kc7 Rc2 dxc2 Kxc2 K
45 +3.61! 11.1G 2:06.16 Rg2!
45 +2.84! 8.30G 1:34.89 Kd1!
45 +2.23! 8.09G 1:32.52 Kd1!
45 +1.75! 7.94G 1:30.80 Kd1!
45 +0.96! 7.94G 1:30.76 Kd1!
45 +0.68! 7.91G 1:30.41 Kd1!
45 +0.23! 7.03G 1:20.14 Kd1!
45 +0.15! 6.88G 1:18.40 Kd1!
45 +0.09! 6.67G 1:15.98 Kd1!
45 +0.05! 6.54G 1:14.54 Kd1!
45 +0.03! 6.52G 1:14.30 Kd1!
44 0.00 4.57G 0:51.58 Kd1 Kb6 Rg2 Kc6 Ke1 Kb6
43 0.00 4.12G 0:46.27 Kd1 Kb6 Rg2 Kc6 Ke1 Kb6
42 0.00 4.08G 0:45.78 Kd1 Kb6 Rg2 Kc6 Ke1 Kb6
41 0.00 845.7M 0:08.31 Kd1 Kb6 Rg2 Kb5
40 0.00 723.7M 0:07.07 Kd1 Kb6 Rg2 Kc6 Ke1 Kb6
39 0.00 657.7M 0:06.41 Kd1 Kb6 Rg2 Kc7 Re2 Kb6
38 0.00 107.3M 0:00.92 Kd1 Kb6 Rg2 Kb5
37 0.00 81.6M 0:00.69 Kd1 Kb6 Rg2 Kb5
36 0.00 67.8M 0:00.59 Kd1 Kb6 Rg2 Kb5
35 0.00 67.7M 0:00.59 Kd1 Kb6 Rg2 Kb5
34 0.00 44.7M 0:00.40 Kd1 Kb6 Rg2 Kb5
33 0.00 39.5M 0:00.34 Kd1 Kb6 Rg2 Kb7 Ke1 Kc6 Re2 Kb5 Kf2 Kc6
32 0.00 33.3M 0:00.28 Kd1 Kb6 Rg2 Kb7 Ke1 Kc6 Re2 Kb5 Kf2 Kc6
31 0.00 31.8M 0:00.27 Kd1 Kb6 Rg2 Kb7 Ke1 Kc6 Re2 Kb5 Kf2 Kc6
30 0.00 31.6M 0:00.27 Kd1 Kb6 Rg2 Kb7 Ke1 Kc6 Re2 Kb5 Kf2 Kc6
29 0.00 31.2M 0:00.26 Kd1 Kb6 Rg2 Kb7 Ke1 Kc6 Re2 Kb5 Kf2 Kc6
28 0.00 30.9M 0:00.26 Kd1 Kb6 Rg2 Kb7 Ke1 Kc6 Re2 Kb5 Kf2 Kc6
27 0.00 30.7M 0:00.26 Kd1 Kb6 Rg2 Kb7 Ke1 Kc6 Re2 Kb5 Kf2 Kc6
26 0.00 30.7M 0:00.26 Kd1 Kb6 Rg2 Kb7 Ke1 Kc6 Re2 Kb5 Kf2 Kc6
25 0.00 30.6M 0:00.26 Kd1 Kb6 Rg2 Kb7 Ke1 Kc6 Re2 Kb5 Kf2 Kc6
24 +0.88 22.1M 0:00.18 Kd1 Kb6 Rg2 Kb5 Re2 Kc6 Ke1 Kb5 Kf2 Ka5 Re1 Kb5 Rg1 Kc6 Rg2 Kb5 Rc1 Kb6 Kg1 Kc7 Re2 Kc6 Rce1 Kb6 Rd1 Kc7 Ree1 Kb6 Rc1 Kc7 Red1 Kc6 Kf2 Kc7 Qa2 bxa2 b3 axb3 a4 a1=Q Na3 Qxa3 Ra1 Qd6 a5 Qa6
23 0.00 7.35M 0:00.06 Rg2 Kc6 Rf2 Kb5
22 0.00 4.49M 0:00.04 Rg2 Kc6 Rf2 Kb5
21 0.00 3.74M 0:00.03 Rg2 Kc6 Rf2 Kb5
20 0.00 2.35M 0:00.02 Rg2 Kc6 Rf2 Kb5
19 0.00 2.01M 0:00.02 Rg2 Kc6 Rf2 Kb5
18 0.00 1.36M 0:00.02 Rg2 Kc6 Rhg1 Kb5
17 0.00 986242 0:00.01 Rg2 Kc6 Rhg1 Kb5
16 0.00 739710 0:00.01 Rg2 Kc6 Rf2 Kb5
15 0.00 620035 0:00.01 Rg2 Kc6 Rf2 Kb5
14 0.00 535841 0:00.01 Rg2 Kc6 Rf2 Kb5
13 0.00 447646 0:00.01 Rg2 Kc6 Rf2 Kb6 Rg1 Ka7 Rh1
12 0.00 378549 0:00.01 Rg2 Kc6 Rf2 Kb6 Rg1 Kc6
11 0.00 294228 0:00.00 Rg2 Kc6 Rf2 Kb6 Rg1 Ka6 Rh1
10 0.00 242364 0:00.00 Rg2 Kc6 Rf2 Kb6 Qa2 bxa2 Rg1 a1=Q Rgg2 Kc6 Re2
9 +1.19 204632 0:00.00 Rg2 Kc6 Rf2 Kb6 Qa2 bxa2 b4 a1=Q Rg1 Kb5 Re2
8 0.00 154482 0:00.00 Rg2 Kc6 Qa2 bxa2 Rf2 a1=Q Rg1 Kb6 Rfg2
7 +3.02 114380 0:00.00 Rg2 Kc6 Qa2 bxa2 b4 a1=Q b5+ Kxb5
6 +7.12 83602 0:00.00 Rg2 hxg2 Rg1 gxf1=R+ Rxf1 Kc6 Rh1
5 +3.67 43943 0:00.00 Kd1 Kb6 Qa2 bxa2 Kc1 a1=Q
4 +7.16 31672 0:00.00 Rg2 hxg2 Rg1 gxf1=B
3 +5.13 26011 0:00.00 Rg2 hxg2 h3 gxh1=Q
2 +7.18 21637 0:00.00 Rg2 hxg2 Rg1
1 +7.15 12973 0:00.00 Rg2
0 #