Fascinating chess position

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

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rabbits
Posts: 276
Joined: Wed Mar 08, 2006 10:14 pm
Location: Sydney, Australia

Fascinating chess position

Post by rabbits »

I found this chess position in a chess book at home and put it to Houdini 1.5 w32 and Fritz 13 and while they found the first move for black without any trouble they were unable to continue with the winning line which is complicated. The game was between Henneberger - Nimzowitsch 1931 and was presented to highlight bad bishops. Because my computer does not have a really fast processor I thought I'd check here to see if there were any programmes that can find the solution.
[d] 8/8/2k1pn2/5p2/p1pP1Pp1/2P1K1P1/P7/4B3 b- - 01
The solution is : 1....Ne4 2 Ke2 Kd5 3 Ke3 Kd6! 4Ke2 Kc6 5 Ke3 Kd5
6 Ke2 Nd6! 7Ke3 Nb5 8 Bd2 Na3! 9Bc1 [no choice] Nb1 10 Bb2! a3!
11Ba1 Kd6! 12 Ke2 Kc6 13 Kd1 Kd5 14 Kc2 Ke4 15 Kxb1 Kf3 16 Bb2!
axb2! 17 a4 Kxg3 18 a5 Kh2! 19a6 g3 20a7 g2 21 a8=Q g1=Q 22 Kxb2
Qg2+ 23 Qxg2+ Kxg2 24 Ka3 Kf3 25 Kb4 Kxf4 26Kxc4 Ke3 27 d5 exd5
28Kxd5 f4 and white resigned. He loses the pawn race by a single move.
A fascinating game I thought and a position I doubt that any computer chess programme could solve. Thoughts anyone?
Allan
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Robert Flesher
Posts: 1290
Joined: Tue Aug 18, 2009 3:06 am

Re: Fascinating chess position

Post by Robert Flesher »

This seems rather convincing.



New game
8/8/2k1pn2/5p2/p1pP1Pp1/2P1K1P1/P7/4B3 b - - 0 1

Analysis by Houdini 1.5a x64:

1...Ne4 2.Ke2 a3 3.Kd1 Kd6 4.Ke2 Kd5 5.Ke3
=/+ (-0.38) Depth: 6/9 00:00:00 0kN
1...Ne4 2.Ke2 a3 3.Ke3 Kd6 4.Ke2 Kd5 5.Ke3
=/+ (-0.38) Depth: 7/9 00:00:00 1kN
1...Ne4 2.Ke2 a3 3.Ke3 Kd6 4.Ke2 Kd5 5.Ke3
=/+ (-0.38) Depth: 8/11 00:00:00 1kN
1...Ne4 2.Ke2 a3 3.Ke3 Kd6 4.Ke2 Kd5 5.Ke3 Kc6 6.Ke2 Nd6 7.Ke3 Kd7 8.Ke2 Kc7 9.Ke3 Ne4 10.Ke2 Nf6 11.Ke3 Ne4 12.Ke2
=/+ (-0.38) Depth: 9/11 00:00:00 1kN
1...Ne4 2.Ke2 a3 3.Ke3 Kd6 4.Ke2 Kd5 5.Ke3 Kc6 6.Ke2 Kd6 7.Ke3 Nf6 8.Kf2
=/+ (-0.38) Depth: 10/22 00:00:00 1kN
1...Ne4 2.Ke2 a3 3.Ke3 Kd6 4.Ke2 Kd5 5.Ke3 Kc6 6.Ke2 Kd6 7.Ke3 Nf6 8.Kf2
=/+ (-0.38) Depth: 11/22 00:00:00 2kN
1...Ne4 2.Ke2 a3 3.Ke3 Kd6 4.Ke2 Kd5 5.Kf1 Kc6 6.Ke2 Kd6 7.Ke3 Kd7 8.Ke2 Kc6 9.Ke3
=/+ (-0.38) Depth: 12/22 00:00:00 4kN
1...Ne4 2.Ke2 a3 3.Ke3 Kd6 4.Ke2 Kd5 5.Ke3 Kc6 6.Ke2 Kd6 7.Ke3 Kd7 8.Ke2 Nd6 9.Ke3 Kc7 10.d5 exd5 11.Kd4
=/+ (-0.38) Depth: 13/22 00:00:00 5kN
1...Ne4 2.Ke2 a3 3.Ke3 Kd6 4.Ke2 Kd5 5.Ke3 Kc6 6.Ke2 Kd6 7.Ke3 Kd7 8.Ke2 Kc7 9.Ke3 Kd6 10.Ke2
=/+ (-0.38) Depth: 14/22 00:00:00 7kN
1...Ne4 2.Ke2 a3 3.Ke3 Kd6 4.Ke2 Kd5 5.Ke3 Kc6 6.Ke2 Kd6 7.Ke3 Kd7 8.Ke2 Kc7 9.Ke3 Kd6 10.Ke2
=/+ (-0.38) Depth: 15/22 00:00:00 8kN
1...Ne4 2.Ke2 a3 3.Ke3 Kd6 4.Ke2 Kd5 5.Ke3 Kc6 6.Ke2 Kd6 7.Ke3 Nf6 8.Bf2 Kd5 9.Be1 Kc6 10.Ke2 Kb6
=/+ (-0.38) Depth: 16/22 00:00:00 10kN
1...Ne4 2.Ke2 a3 3.Ke3 Kd6 4.Ke2 Kd5 5.Ke3 Kc6 6.Ke2 Kd6 7.Ke3 Nf6 8.Bf2 Kd5 9.Be1 Kc6 10.Ke2 Kc7 11.Ke3 Ne4 12.Ke2 Nf6 13.Ke3
=/+ (-0.38) Depth: 17/22 00:00:00 13kN
1...Ne4 2.Ke2 a3 3.Ke3 Kd6 4.Ke2 Kd5 5.Ke3 Kc6 6.Ke2 Kd6 7.Ke3 Nf6 8.Bf2 Kd5 9.Be1 Kc6 10.Ke2 Kc7 11.Ke3 Ne4 12.Ke2 Nf6 13.Ke3
=/+ (-0.38) Depth: 18/24 00:00:00 20kN
1...Ne4 2.Ke2 a3 3.Ke3 Kd6 4.Ke2 Kd5 5.Ke3 Kc6 6.Ke2 Kd6 7.Ke3 Nf6 8.Bf2 Kd5 9.Be1 Kc6 10.Ke2 Kc7 11.Ke3 Kd8 12.Kf2 Ne4+ 13.Ke3 Kd7 14.Ke2 Kc7 15.Ke3 Kd6 16.Ke2
=/+ (-0.38) Depth: 19/25 00:00:00 28kN
1...Ne4 2.Ke2 a3 3.Ke3 Kd6 4.Ke2 Kd5 5.Ke3 Kc6 6.Ke2 Kd6 7.Ke3 Nf6 8.Bf2 Kd5 9.Be1 Kc6 10.Ke2 Kb6 11.Bf2 Ne4 12.Be1 Nf6 13.Bf2
=/+ (-0.38) Depth: 20/30 00:00:00 42kN
1...Ne4 2.Ke2 a3 3.Ke3 Kd6 4.Ke2 Kd5 5.Ke3 Kc6 6.Ke2 Kd6 7.Ke3 Nf6 8.Bf2 Kd5 9.Be1 Kc6 10.Ke2 Kb6 11.Bf2 Ne4 12.Be1 Kc7 13.Ke3 Kd6 14.Ke2
=/+ (-0.38) Depth: 21/37 00:00:00 86kN
1...Ne4 2.Ke2 a3 3.Ke3 Kd6 4.Ke2 Kd5 5.Ke3 Kc6 6.Ke2 Kd6 7.Ke3 Nf6 8.Bf2 Kd5 9.Be1 Kc6 10.Ke2 Kb6 11.Bf2 Ne4 12.Be1 Kc7 13.Ke3 Kd6 14.Ke2
=/+ (-0.38) Depth: 22/37 00:00:00 169kN
1...Ne4 2.Ke2 a3 3.Ke3 Kd6 4.Ke2 Kd5 5.Ke3 Kc6 6.Ke2 Kd6 7.Ke3 Nf6 8.Bf2 Kd5 9.Be1 Kc6 10.Ke2 Kb6 11.Bf2 Ne4 12.Be1 Ka5 13.Ke3 Kb5 14.Ke2 Ka6 15.Kd1 Ka7 16.Ke2 Kb7 17.Ke3 Kc6 18.Ke2
=/+ (-0.38) Depth: 23/38 00:00:00 405kN
1...Ne4 2.Ke2 a3 3.Ke3 Kd6 4.Ke2 Kd5 5.Ke3 Kc6 6.Ke2 Kd6 7.Ke3 Nf6 8.Bf2 Kd5 9.Be1 Kc6 10.Ke2 Kb6 11.Bf2 Ne4 12.Be1 Nd6 13.Ke3 Kc6 14.Ke2 Kd5 15.Kf2 Kc6 16.Ke3 Kd7 17.Ke2 Kc7 18.Ke3 Ne4 19.Ke2 Nf6 20.Ke3 Kc6 21.Ke2
=/+ (-0.38) Depth: 24/39 00:00:00 842kN
1...Ne4 2.Ke2 a3 3.Ke3 Kd6 4.Ke2 Kd5 5.Ke3 Kc6 6.Ke2 Kd6 7.Ke3 Nf6 8.Bf2 Kd5 9.Be1 Kc6 10.Ke2 Kb6 11.Bf2 Ne4 12.Be1 Nd6 13.Ke3 Kc6 14.Ke2 Kd7 15.Ke3 Kc7 16.d5 exd5 17.Kd4
=/+ (-0.38) Depth: 25/45 00:00:00 1570kN
1...Ne4 2.Ke2 a3 3.Ke3 Kd6 4.Ke2 Kd5 5.Ke3 Kc6 6.Ke2 Kd6 7.Ke3 Nf6 8.Bf2 Kd5 9.Be1 Kc6 10.Ke2 Kb6 11.Bf2 Ne4 12.Be1 Nd6 13.Ke3 Kc6 14.Ke2 Kc7 15.Ke3 Ne4 16.Ke2 Nf6 17.Ke3 Kc6 18.Ke2
=/+ (-0.38) Depth: 26/45 00:00:00 2803kN
1...Ne4 2.Ke2 a3 3.Ke3 Kd6 4.Ke2 Kd5 5.Ke3 Kc6 6.Ke2 Kd6 7.Ke3 Nf6 8.Bf2 Kd5 9.Be1 Kc6 10.Ke2 Kb6 11.Bf2 Ne4 12.Be1 Nd6 13.Ke3 Kc6 14.Ke2 Kd5 15.Kf1 Ne4 16.Kg2 Kc6 17.Kf1 Kd7 18.Ke2 Kc7 19.Ke3 Kb6 20.Ke2 Nd6
=/+ (-0.38) Depth: 27/55 00:00:03 26871kN
1...Ne4 2.Ke2 a3 3.Ke3 Kd6 4.Ke2 Kd5 5.Ke3 Kc6 6.Ke2 Kd6 7.Ke3 Nf6 8.Bf2 Kd5 9.Be1 Kc6 10.Ke2 Kb6 11.Bf2 Ne4 12.Be1 Nd6 13.Ke3 Kc6 14.Ke2 Kd5 15.Kf1 Ne4 16.Kg2 Kc6 17.Kf1 Nd6 18.Kg2 Kc7 19.Kf2 Ne4+ 20.Ke3 Nf6 21.Ke2 Kd6 22.Kf1 Kd7 23.Ke2 Kc6 24.Bd2 Ne4 25.Be1 Kd6
=/+ (-0.38) Depth: 28/55 00:00:10 97256kN
1...Ne4
=/+ (-0.43 ++) Depth: 29/55 00:00:12 110mN
1...Ne4
=/+ (-0.56 ++) Depth: 29/55 00:00:12 113mN
1...Ne4
-/+ (-0.84 ++) Depth: 29/59 00:00:13 120mN
1...Ne4
-+ (-1.75 ++) Depth: 29/80 00:00:19 173mN
1...Ne4 2.Ke2 Kd6 3.Ke3 Kd5 4.Ke2 Nd6 5.Ke3 Nb5 6.Bd2 Na3 7.Bc1 Nb1 8.Bb2 a3 9.Ba1 Kd6 10.Ke2 Kc6 11.Kd1 Kd5 12.Kc2 Ke4 13.Bb2 axb2 14.Kxb1 Kf3 15.a4 Kxg3 16.a5 Kxf4 17.a6 g3 18.a7 g2 19.a8Q g1Q+ 20.Kxb2 Qd1 21.Qa5 Kf3 22.Qb5 Qd2+ 23.Kb1 Qxc3 24.Qc6+ Kf2 25.Qxe6 f4 26.Qh6 f3 27.d5 Qd3+ 28.Kc1 Qxd5 29.Qb6+ Ke2 30.Qb2+ Ke3 31.Qc3+ Kf4 32.Qe1 Qd3 33.Qh4+ Kf5 34.Qh6 Qe2
-+ (-2.53) Depth: 29/80 00:00:47 443mN
1...Ne4
-+ (-2.66 ++) Depth: 30/80 00:01:06 623mN
1...Ne4 2.Ke2 Kd6 3.Ke3 Kd5 4.Ke2 Nd6 5.Ke3 Nb5 6.Bd2 Na3 7.Bc1 Nb1 8.Bb2 a3 9.Ba1 Kd6 10.Ke2 Kc6 11.Kd1 Kd5 12.Kc2 Ke4 13.Bb2 axb2 14.Kxb1 Kf3 15.a4 Kxg3 16.a5 Kxf4 17.a6 g3 18.a7 g2 19.a8Q g1Q+ 20.Kxb2 Qd1 21.Qb8+ Kf3 22.d5 Qxd5 23.Qh2 f4 24.Kc1 Kg4 25.Qg1+ Kf5 26.Qh2 f3 27.Qh5+ Ke4 28.Qh2 e5 29.Qh6 Qc5 30.Qg6+ Ke3 31.Qg5+ Ke2 32.Qd2+ Kf1
-+ (-2.78) Depth: 30/80 00:01:27 813mN
1...Ne4 2.Ke2 Kd6 3.Ke3 Kd5 4.Ke2 Nd6 5.Ke3 Nb5 6.Bd2 Na3 7.Bc1 Nb1 8.Bb2 a3 9.Ba1 Kd6 10.Ke2 Kc6 11.Kd1 Kd5 12.Kc2 Ke4 13.Bb2 axb2 14.Kxb1 Kf3 15.a4 Kxg3 16.a5 Kxf4 17.a6 g3 18.a7 g2 19.a8Q g1Q+ 20.Kxb2 Qd1 21.Qb8+ Kf3 22.d5 Qxd5 23.Qh8 f4 24.Qh1+ Kg4 25.Qg1+ Kf5 26.Kc1 f3 27.Qf1 e5 28.Qh3+ Ke4 29.Qh4+ Kd3 30.Qe1 Qc5 31.Qd1+ Ke3
-+ (-2.81) Depth: 31/81 00:01:49 1024mN

(, Microsoft 17.12.2011)
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rabbits
Posts: 276
Joined: Wed Mar 08, 2006 10:14 pm
Location: Sydney, Australia

Re: Fascinating chess position

Post by rabbits »

It certainly does Robert. I might have to get myself a faster computer.
Allan
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ernest
Posts: 2059
Joined: Wed Mar 08, 2006 8:30 pm

Re: Fascinating chess position

Post by ernest »

rabbits wrote:It certainly does Robert. I might have to get myself a faster computer
No need... Just let your test last longer.

Actually, with my Houdinis (1.5a, 2.0c) I dont'get Robert's result, and stay miserably with (-0.38) :(
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zullil
Posts: 6442
Joined: Tue Jan 09, 2007 12:31 am
Location: PA USA
Full name: Louis Zulli

Re: Fascinating chess position

Post by zullil »

ernest wrote:
rabbits wrote:It certainly does Robert. I might have to get myself a faster computer
No need... Just let your test last longer.

Actually, with my Houdinis (1.5a, 2.0c) I dont'get Robert's result, and stay miserably with (-0.38) :(
And don't try Stockfish. Even with 8 threads running for 8 hours, it doesn't see!

Code: Select all

Searching: 8/8/2k1pn2/5p2/p1pP1Pp1/2P1K1P1/P7/4B3/ b - -
infinite: 1 ponder: 0 time: 0 increment: 0 moves to go: 0
 1   +0.48   00:01      49  Ne4 
 2   +0.57   00:01     146  Ne4 a3 
 3   +0.77   00:01     264  Ne4 a3 Kd5 
 4   +1.01   00:01     392  Ne4 a3 Kd5 Ke2 
 5   +0.73   00:01     957  Ne4 a3 Kd5 Ke2 Kd6 
 6   +0.69   00:01    1270  Ne4 a3 Kd5 Ke2 Kd6 Ke3 
 7   +0.73   00:01    1966  a3 Bf2 Ne4 Be1 Kd7 Ke2 Kd6 
 8   +0.77   00:01    2792  a3 Bf2 Ne4 Be1 Kd7 Ke2 Kd6 Ke3 Kd5 Ke2 
 9   +0.77   00:01    3364  a3 Bf2 Ne4 Be1 Kd7 Ke2 Kd6 Ke3 Kd5 Ke2 Kd6 
10   +0.89   00:01    4684  a3 Bf2 Ne4 Be1 Kd7 Ke2 Kd6 Ke3 Kc6 Ke2 Kd5 Ke3 Kc6 
11   +0.85   00:01    8017  a3 Bf2 Ne4 Be1 Kd7 Ke2 Kd6 Ke3 Kc6 Ke2 Kd5 Ke3 Kd6 
                            Ke2 Ke7 Ke3 Kd7 
12   +0.57   00:01   16260  a3 Bf2 Ne4 Be1 Kd7 Ke2 Kd6 Ke3 Kc6 Ke2 Kd5 Ke3 Kd6 
                            Ke2 Ke7 Ke3 Kd7 
13   +0.61   00:01   27549  Ne4 Ke2 Kd5 Ke3 a3 Ke2 Kd6 Ke3 Kc6 Ke2 Kd5 Ke3 Kd6 
                            Ke2 Ke7 Ke3 Kd7 Ke2 Kd6 
14   +0.69   00:01   34756  Ne4 Ke2 Kd5 Ke3 Kd6 Ke2 Kc6 Ke3 Kd5 Ke2 a3 Ke3 Kd6 
                            Ke2 Ke7 Ke3 Kd7 Ke2 Kd6 Ke3 Kc6 Ke2 Kd5 
15   +0.69   00:01   40909  Ne4 Ke2 Kd5 Ke3 Kd6 Ke2 Kc6 Ke3 Nf6 Ke2 Kd6 Ke3 Ne4 
16   +0.69   00:01   44086  Ne4 Ke2 Kd5 Ke3 Kd6 Ke2 Kc6 Ke3 Nf6 Ke2 Kd6 Ke3 Ne4 
17   +0.61   00:01   59334  Ne4 Ke2 Kd5 Ke3 Kd6 Ke2 Kc6 Ke3 Kc7 Ke2 Kd6 Ke3 Kd7 
                            Ke2 Kd6 
18   +0.61   00:01   67681  Ne4 Ke2 Kd5 Ke3 Kd6 Ke2 Kc6 Ke3 Kc7 Ke2 Kd6 Ke3 Kd7 
                            Ke2 Kd6 
19   +0.61   00:01   77274  Ne4 Ke2 Kd5 Ke3 Kd6 Ke2 Kc6 Ke3 Kc7 Ke2 Kd6 Ke3 Kd7 
                            Ke2 Kd6 
20   +0.61   00:01   89205  Ne4 Ke2 Kd5 Ke3 Kd6 Ke2 Kc6 Ke3 Kc7 Ke2 Kd6 Ke3 Kd7 
                            Ke2 Kd6 
21   +0.61   00:01  104047  Ne4 Ke2 Kd5 Ke3 Kd6 Ke2 Kc6 Ke3 Kc7 Ke2 Kd6 Ke3 Kd7 
                            Ke2 Kd6 
22   +0.73   00:01  121179  Ne4 Ke2 Kd5 Ke3 Kd6 Ke2 Kc6 Ke3 Kc7 Ke2 Kd6 Ke3 Kd7 
                            Ke2 a3 Ke3 Kd6 Ke2 Kd5 Ke3 Kc6 Ke2 Kd6 Ke3 Kd5 Ke2 
                            Kd6 
23   +0.73   00:01  164360  Ne4 Ke2 Kd5 Ke3 Kd6 Ke2 Kc6 Ke3 Kc7 Ke2 Kd6 Ke3 Kd7 
                            Ke2 a3 Ke3 Kd6 Ke2 Kc6 Kf1 Kc7 Ke2 Kd6 Ke3 Kd5 Ke2 
                            Kc6 
24   +0.73   00:01  205656  Ne4 Ke2 Kd5 Ke3 Kd6 Ke2 Kc6 Ke3 Kc7 Ke2 Kd6 Ke3 Kd7 
                            Ke2 Ke8 Ke3 Ke7 Ke2 Kd7 Kd1 Kd8 Ke2 Kd7 
25   +0.73   00:01  244284  Ne4 Ke2 Kd5 Ke3 Kd6 Ke2 Kc6 Ke3 Kc7 Ke2 Kd6 Ke3 Kd7 
                            Ke2 Ke8 Ke3 Ke7 Ke2 Kd7 Kd1 Kd8 Ke2 Kd7 
26   +0.73   00:01  294974  Ne4 Ke2 Kd5 Ke3 Kd6 Ke2 Kc6 Ke3 Kc7 Ke2 Kd6 Ke3 Kd7 
                            Ke2 Ke8 Ke3 Ke7 Ke2 Kd8 Kd1 Ke7 Ke2 
27   +0.73   00:01  355060  Ne4 Ke2 Kd5 Ke3 Kd6 Ke2 Kc6 Ke3 Kc7 Ke2 Kd6 Ke3 Kd7 
                            Ke2 Ke8 Ke3 Ke7 Ke2 Kd8 Kd1 Ke7 Ke2 
28   +0.73   00:01  735776  Ne4 Ke2 Kd5 Ke3 Kd6 Ke2 Kc6 Ke3 Kc7 Ke2 Kd6 Ke3 Kd7 
                            Ke2 Ke8 Ke3 Ke7 Ke2 Kd7 Kd1 a3 Ke2 Kd6 Kf1 Kd5 Ke2 
                            Kc6 Kf1 Kc7 Ke2 Kd6 
29   +0.73   00:01  808372  Ne4 Ke2 Kd5 Ke3 Kd6 Ke2 Kc6 Ke3 Kc7 Ke2 Kd6 Ke3 Kd7 
                            Ke2 Ke8 Ke3 Ke7 Ke2 Kd7 Ke3 Ke7 
30   +0.73   00:01  908489  Ne4 Ke2 Kd5 Ke3 Kd6 Ke2 Kc6 Ke3 Kc7 Ke2 Kd6 Ke3 Kd7 
                            Ke2 Ke8 Ke3 Ke7 Ke2 Kd7 Ke3 Nd6 Bd2 Kc6 Be1 a3 Ke2 
                            Ne4 Ke3 Nd6 
31   +0.73   00:01   2173K  Ne4 Ke2 Kd5 Kd1 Kd6 Ke2 Nf6 Kd2 Kd7 Ke3 Kc6 Kd2 Nh5 
                            Kc1 Kb6 Kd2 Kc7 Ke2 Nf6 Bd2 Kd7 Be1 Kd8 Bf2 Ne4 Be1 
                            Nf6 
32   +0.73   00:01   2305K  Ne4 Ke2 Kd5 Kd1 Kd6 Ke2 Nf6 Kd2 Kd7 Ke3 Kc6 Kd2 Nh5 
                            Kc1 Kb6 Kd2 Kc7 Ke2 Nf6 Bd2 Kd7 Be1 Kd8 Bf2 Ne4 Be1 
                            Kc7 Ke3 Kd7 Ke2 Kd6 Ke3 Ke7 Ke2 Kd7 Kd1 Kc7 Ke2 Kc6 
                            Ke3 Kd5 Ke2 Kd6 
33   +0.73   00:01   2517K  Ne4 Ke2 Kd5 Kd1 Kd6 Ke2 Nf6 Kd2 Kd7 Ke3 Kc6 Kd2 Nh5 
                            Kc1 Kb6 Kd2 Kc7 Ke2 Nf6 Bd2 Kd7 Be1 Kd8 Bf2 Ne4 Be1 
                            Kc7 Ke3 Kd7 Ke2 Kd6 Ke3 Ke7 Ke2 Kd7 Ke3 Kd6 Ke2 
34   +0.73   00:02   3873K  Ne4 Ke2 Kd5 Kd1 Kd6 Ke2 Nf6 Kd2 Kd7 Ke3 Kc6 Kd2 Nh5 
                            Kc1 Kb6 Kd2 Kc7 Ke2 Nf6 Bd2 Kd7 Be1 Ne4 Ke3 Ke7 Ke2 
                            Kd6 Ke3 Kd7 Ke2 Kc6 Ke3 Kd5 Ke2 Kd6 
35   +0.73   00:02   4113K  Ne4 Ke2 Kd5 Kd1 Kd6 Ke2 Nf6 Kd2 Kd7 Ke3 Kc6 Kd2 Nh5 
                            Kc1 Kb6 Kd2 Kc7 Ke2 Nf6 Bd2 Kd7 Be1 Ne4 Ke3 Ke7 Ke2 
                            a3 Ke3 Kd6 Ke2 Ke7 
36   +0.73   00:02   8058K  Ne4 Ke2 Kd5 Kd1 Kd6 Ke2 Nf6 Kd2 Kd7 Ke3 Kc6 Kd2 Nh5 
                            Kc1 Kb6 Kd2 Kc7 Ke2 Nf6 Ke3 Ne4 Ke2 a3 Ke3 Kd6 Ke2 
                            Kc6 Kd1 Nd6 Kd2 Kd7 Ke2 Ne4 Ke3 Kd6 
37   +0.73   00:02   8554K  Ne4 Ke2 Kd5 Kd1 Kd6 Ke2 Nf6 Kd2 Kd7 Ke3 Kc6 Kd2 Nh5 
                            Kc1 Kb6 Kd2 Kc7 Ke2 Nf6 Ke3 Ne4 Ke2 Kc6 Ke3 Kd5 Ke2 
                            Kd6 Kf1 Kd5 Kg1 Kc6 Kf1 Kd6 Ke2 
38   +0.73   00:02  10218K  Ne4 Ke2 Kd5 Kd1 Kd6 Ke2 Nf6 Kd2 Kd7 Ke3 Kc6 Kd2 Nh5 
                            Kc1 Kb6 Kd2 Kc7 Ke2 Nf6 Ke3 Kc6 
39   +0.73   00:04  25815K  Ne4 Ke2 Kd5 Kd1 Kd6 Ke2 Nf6 Kd2 Kd7 Ke3 Kc6 Kd2 Nh5 
                            Kc1 Kb6 Kd2 Kc7 Ke2 Nf6 Ke3 Kd7 Ke2 Ne4 Kd1 Kc7 Ke2 
                            Nf6 
40   +0.73   00:05  26587K  Ne4 Ke2 Kd5 Kd1 Kd6 Ke2 Nf6 Kd2 Kd7 Ke3 Kc6 Kd2 Nh5 
                            Kc1 Kb6 Kd2 Kc7 Ke3 Kd6 Ke2 Kd7 Kd1 Kc7 Kc2 Nf6 Kd2 
                            Kd6 Ke3 Nd5+ Ke2 Nf6 
41   +0.73   00:05  28331K  Ne4 Ke2 Kd5 Kd1 Kd6 Ke2 Nf6 Kd2 Kd7 Ke3 Kc6 Kd2 Nh5 
                            Kc1 Kb6 Kd2 Kc7 Ke3 Kd6 Ke2 Kd7 Kd1 Kc7 Kc2 Nf6 Kb2 
                            Kc6 Kc2 Ne4 Kd1 Kc7 Ke2 Kd6 Kf1 Kd5 Ke2 Nd6 Kd2 Kc6 
                            Ke2 Ne4 Kf1 Kb5 Ke2 Kb6 Kd1 Kc7 
42   +0.61   00:06  34261K  Ne4 Ke2 Kd5 Kd1 Kd6 Ke2 Kc6 Kd1 Kc7 Kc1 Kb6 Kd1 Kb5 
                            Kc1 a3 Kd1 Kb6 Ke2 Kc6 Kd1 Kd6 Ke2 Kc6 
43   +0.61   00:06  37931K  Ne4 Ke2 Kd5 Kd1 Kd6 Ke2 Kc6 Kd1 Kc7 Kc1 Kb6 Kd1 Kb5 
                            Kc1 Nf6 Kd1 Ka6 Ke2 Ne4 Ke3 Kb5 Ke2 Nf6 Ke3 Kc6 Ke2 
                            Kb6 Kd1 Ne4 Kc2 Nd6 Kb1 Ka6 Bd2 Kb5 Be1 Ne8 Kc1 Nf6 
44   +0.61   00:07  39352K  Ne4 Ke2 Kd5 Kd1 Kd6 Ke2 Kc6 Kd1 Kc7 Kc1 Kb6 Kd1 Kb5 
                            Kc1 Nf6 Kd1 Ka6 Ke2 Ne4 Ke3 Kb5 Ke2 Nd6 Bd2 Ka5 Be1 
                            Kb6 Ke3 Kc7 Ke2 Kc6 Kd1 Kd5 Kd2 Kc6 Ke3 Kd5 Kf2 Ke4 
                            Ke2 Ne8 Bd2 Nf6 Be1 Nd5 Bd2 Nf6 
45   +0.61   00:11  66172K  Ne4 Ke2 Kd5 Ke3 Kd6 Ke2 Kc6 Kd1 Kc7 Kc1 Kb6 Kd1 Kb5 
                            Ke2 Nd6 Kf2 Ka5 Ke3 Ne4 d5 exd5 Kd4 Nf6 Ke3 Nh5 Kd4 
                            Nf6 
46   +0.61   00:11  69268K  Ne4 Ke2 Kd5 Ke3 Kd6 Ke2 Kc6 Kd1 Kc7 Kc1 Kb6 Kd1 Kb5 
                            Ke2 Nd6 Kf2 Ka5 Ke3 Kb6 Ke2 Kc7 Ke3 Ne4 Ke2 Kd6 Kd1 
                            Kd5 Ke2 Nd6 Ke3 Ne8 Bf2 Kc6 Be1 Kd6 Bd2 Kd7 Be1 Nf6 
                            Ke2 Ne4 Ke3 Kd6 
47   +0.61   00:13  84681K  Ne4 Ke2 Kd5 Ke3 Kd6 Ke2 Kc6 Kd1 Kc7 Kc1 Kb6 Kd1 Kb5 
                            Ke2 Nd6 Kf2 Ka5 Ke3 Kb6 Ke2 Kc7 Ke3 Ne4 Ke2 Kd6 Ke3 
                            Kd7 Ke2 Ke7 Ke3 Kd6 
48   +0.61   00:17 108386K  Ne4 Ke2 Kd5 Ke3 Kd6 Ke2 Kc6 Kd1 Kc7 Kc1 Kb6 Kd1 Kb5 
                            Ke2 Nd6 Kf2 Ka5 Ke3 Kb6 Ke2 Kc7 Ke3 Ne4 Ke2 Kd6 Ke3 
                            Kd7 Ke2 Kc6 
49   +0.61   00:23 163187K  Ne4 Ke2 Kd5 Ke3 Kd6 Ke2 Kc6 Kd1 Kc7 Kc1 Kb6 Kd1 Kb5 
                            Ke2 Nd6 Kf2 Ka5 Ke3 Kb6 Ke2 Kc7 Ke3 Ne4 Ke2 Kd7 Kf1 
                            Ke8 Ke2 Kd8 Kd1 Kd7 Kc2 Kc7 Kc1 
50   +0.61   00:48 395079K  Ne4 Ke2 Kd5 Ke3 Kd6 Ke2 Kc6 Kd1 Kc7 Kc1 Kb6 Kd1 Kb5 
                            Ke2 Nd6 Kf2 Ka5 Ke3 Kb6 Ke2 Kc7 Ke3 Ne4 Ke2 Kd6 Kf1 
                            Ke7 Ke2 Kd7 Kf1 a3 Ke2 Kd6 Kd1 Kd7 Ke2 
51   +0.61   01:02 500545K  Ne4 Ke2 Kd5 Ke3 Kd6 Ke2 Kc6 Kd1 Kc7 Kc1 Kb6 Kd1 Kb5 
                            Ke2 Nd6 Kf2 Ka5 Ke3 Nb5 Ke2 Kb6 Bd2 Nd6 Be1 Nb5 
52   +0.61   01:10 563592K  Ne4 Ke2 Kd5 Ke3 Kd6 Ke2 Kc6 Kd1 Kc7 Kc1 Kb6 Kd1 Kb5 
                            Ke2 Nd6 Kf2 Ka5 Ke3 Nb5 Ke2 Kb6 Bd2 Nd6 Be1 Kc6 Bd2 
                            a3 Be1 Ne4 Ke3 Kd6 Ke2 Ke7 Kf1 Kd6 Ke2 
53   +0.61   01:32 773626K  Ne4 Ke2 Kd5 Ke3 Kd6 Ke2 Kc6 Kd1 Kc7 Kc1 Kb6 Kd1 Kb5 
                            Ke2 Nd6 Kf2 Ka5 Ke3 Nb5 Ke2 Kb6 Bd2 Nd6 Be1 Kc6 Ke3 
                            Ne4 
54   +0.61   01:43 867017K  Ne4 Ke2 Kd5 Ke3 Kd6 Ke2 Kc6 Kd1 Kc7 Kc1 Kb6 Kd1 Kb5 
                            Ke2 Nd6 Kf2 Ka5 Ke3 Nb5 Ke2 Kb6 Bd2 Nd6 Be1 Kc6 Ke3 
                            Kd5 Bf2 Nb7 Be1 Kd6 Ke2 Ke7 Kd1 Nd6 Kc1 Ne4 Kb2 Kd6 
                            Ka3 Kd5 Kxa4 
55   +0.61   01:59   1015M  Ne4 Ke2 Kd5 Ke3 Kd6 Ke2 Kc6 Kd1 Kc7 Kc1 Kb6 Kd1 Kb5 
                            Ke2 Nd6 Kf2 Ka5 Ke3 Nb5 Ke2 Kb6 Bd2 Nd6 Be1 Kc6 Ke3 
                            Kd7 Bf2 Ne4 Be1 Kd6 
56   +0.61   02:45   1465M  Ne4 Ke2 Kd5 Ke3 Kd6 Ke2 Kc6 Kd1 Kc7 Kc1 Kb6 Kd1 Kb5 
                            Ke2 Nd6 Kf2 Ka5 Ke3 Nb5 Ke2 Kb6 Bd2 Nd6 Be1 Kc6 Ke3 
                            Kd7 Kf2 a3 Ke3 Ne4 Ke2 Kd6 Kd1 Ke7 Kc2 Kd7 Kd1 Kc6 
                            Ke2 Kc7 Ke3 Kd6 Ke2 Kd5 Kf1 Kd6 Kg2 Ke7 Kf1 Kd6 
57   +0.61   03:10   1710M  Ne4 Ke2 Kd5 Ke3 Kd6 Ke2 Kc6 Kd1 Kc7 Kc1 Kb6 Kd1 Kb5 
                            Ke2 Nd6 Kf2 Ka5 Ke3 Nb5 Ke2 Kb6 Bd2 Nd6 Be1 Kc6 Bd2 
                            a3 Be1 Ne4 Ke3 Kd6 Ke2 Kd5 Kf1 Nf6 Kf2 Kd6 Kg2 Kd7 
                            Kf2 Ne4+ Ke2 Ke7 Ke3 Kd7 Ke2 
58   +0.77   04:06   2242M  Ne4 Ke2 Kd5 Ke3 Kd6 Ke2 Kd7 Kd1 Nd6 Ke2 Kc6 Bf2 Ne8 
                            Be1 Nc7 Ke3 Nd5+ Kf2 Kd7 Bd2 Kd6 Be1 Nf6 Ke2 Kd5 
                            Kd1 Nd7 Kd2 Ke4 Bf2 Kf3 
59   +0.89   05:15   2923M  Ne4 Ke2 Kd5 Ke3 Kd6 Ke2 Kd7 Kd1 Nd6 Ke2 Kc6 Bf2 Kb7 
                            Be1 Kc7 Bf2 Ne4 Be1 Kd6 Ke3 Kd7 Ke2 Kd8 Kd1 Ke7 Kc1 
                            Kd6 Kb2 Kd5 Kc1 Nd6 Kd1 Ke4 Ke2 Nc8 Kd1 Kd3 a3 Nd6 
                            Kc1 Ke2 
60   +0.89   06:24   3584M  Ne4 Ke2 Kd5 Ke3 Kd6 Ke2 Kd7 Kd1 Nd6 Ke2 Kc6 Bf2 Kb7 
                            Be1 Kc7 Bf2 Ne4 Be1 Kd6 Ke3 Kd7 Ke2 Kd8 Kd1 Ke7 Kc1 
                            Kd6 Kb2 Kc6 Kc2 Kd6 Kd1 Kd5 Ke2 Nd6 Ke3 Ne4 Ke2 
61   +0.89   08:25   4722M  Ne4 Ke2 Kd5 Ke3 Kd6 Ke2 Kd7 Kd1 Nd6 Ke2 Kc6 Bf2 Kb7 
                            Be1 Kc7 Bf2 Ne4 Be1 Kd6 Ke3 Kd7 Ke2 Kd8 Kd1 Ke7 Kc1 
                            Kd6 Kc2 Kd5 Kd1 Nd6 Kd2 Ke4 Ke2 Nb5 Bd2 Na7 Be3 Nc8 
                            Bd2 
62   +0.89   12:22   7120M  Ne4 Ke2 Kd5 Ke3 Kd6 Ke2 Kd7 Kd1 Nd6 Ke2 Kc6 Bf2 Kb7 
                            Be1 Kc7 Bf2 Ne4 Be1 Kd6 Ke3 Kd7 Ke2 Kd8 Kd1 Ke7 Kc1 
                            Kd6 Kc2 Kd5 Kd1 Nd6 Kd2 Ke4 Ke2 Nc8 Bd2 Nb6 Be1 Nd7 
                            Bf2 Kd5 Ke3 Nb8 Kd2 Kc6 
63   +0.57 1:00:13  20581M  Ne4 Ke2 Kd5 Ke3 Kd6 Ke2 Kd7 Ke3 Nf6 Ke2 Ne4 
64   +0.57 1:15:50  29569M  Ne4 Ke2 Kd5 Ke3 Kd6 Ke2 Kd7 Ke3 Nf6 Ke2 Nd5 Kd2 Kd6 
                            Bf2 a3 Be1 Nf6 Ke2 Kd7 Kf2 Ne4+ Ke3 Kd6 Ke2 Kd5 Ke3 
                            Kc6 Ke2 Nf6 Kd2 Kd5 Ke3 Nh5 Bf2 Kd6 Kd2 Nf6 Ke2 Ne4 
65   +0.57 1:31:03  39170M  Ne4 Ke2 Kd5 Ke3 Kd6 Ke2 Kd7 Ke3 Nf6 Ke2 Nd5 Kd2 Kd6 
                            Bf2 a3 Be1 Nf6 Ke2 Kd7 Kf2 Ne4+ Ke3 Kd6 Ke2 Kd5 Ke3 
                            Kc6 Ke2 Nf6 Kd2 Kd5 Ke3 Nh5 Bf2 Kd6 Kd2 Nf6 Ke2 Ne4 
                            Be1 
66   +0.57 1:44:57  47733M  Ne4 Ke2 Kd5 Ke3 Kd6 Ke2 Kd7 Ke3 Nf6 Ke2 Nd5 Kd2 Kd6 
                            Bf2 a3 Be1 Nf6 Ke2 Kd7 Kf2 Ne4+ Ke3 Kd6 Ke2 Kd5 Ke3 
                            Kc6 Ke2 Nf6 Kd2 Kd5 Ke3 Nh5 Bf2 Kd6 Kd2 Kd7 
67   +0.57 2:18:38  70246M  Ne4 Ke2 Kd5 Ke3 Kd6 Ke2 Kd7 Ke3 Nf6 Ke2 Nd5 Kd2 Kd6 
                            Bf2 a3 Be1 Nf6 Ke2 Kd7 Kf2 Ne4+ Ke3 Kd6 Ke2 Kd5 Ke3 
                            Kc6 Ke2 Nf6 Kd2 Kd5 Ke3 Nh5 Bf2 Kd6 Kd2 Nf6 Ke2 Ne4 
68   +0.57 4:35:14 158956M  Ne4 Ke2 Kd5 Ke3 Kd6 Ke2 Kd7 Ke3 Nf6 Ke2 Nd5 Kd2 Kd6 
                            Bf2 a3 Be1 Nf6 Ke2 Kd7 Kf2 Ne4+ Ke3 Kd6 Ke2 Kd5 Ke3 
                            Kc6 Ke2 Nf6 Kd2 Kd5 Ke3 Nh5 Bf2 Kd6 Kd2 
69   +0.57 5:10:21 181110M  Ne4 Ke2 Kd5 Ke3 Kd6 Ke2 Kd7 Ke3 Nf6 Ke2 Nd5 Kd2 Kd6 
                            Bf2 a3 Be1 Nf6 Ke2 Kd7 Kf2 Ne4+ Ke3 Kd6 Ke2 Kd5 Ke3 
                            Kc6 Ke2 Nf6 Kd2 Kd5 Ke3 Nh5 Bf2 Kd6 Kd2 
70   +0.57 7:35:45 276636M  Ne4 Ke2 Kd5 Ke3 Kd6 Ke2 Kd7 Ke3 Nf6 Ke2 Nd5 Kd2 Kd6 
                            Bf2 a3 Be1 Nf6 Ke2 Kd7 Kf2 Ne4+ Ke3 Kd6 Ke2 Kd5 Ke3 
                            Kc6 Ke2 Nf6 Kd2 Kd5 Ke3 Nh5 Bf2 Kd6 Kd2 
71   +0.48 7:59:02 291676M  Ne4 Ke2 Kd5 Ke3 Kd6 Ke2 Kd7 Ke3 Nf6 Ke2 Nd5 Kd2 Kd6 
                            Bf2 a3 Be1 Nf6 Ke2 Kd7 Kf2 Ne4+ Ke3 Kd6 Ke2 Kd5 Ke3 
                            Kc6 Ke2 Nf6 Kd2 Kd5 Ke3 Nh5 Bf2 Kd6 Kd2 
Nodes: 291676945289
Nodes/second: 10148052
Best move: Ne4
Ponder move: Ke2
Top
ernest
Posts: 2059
Joined: Wed Mar 08, 2006 8:30 pm

Re: Fascinating chess position

Post by ernest »

zullil wrote:And don't try Stockfish.
Hi Louis,

Can you try Houdini?
Top
zullil
Posts: 6442
Joined: Tue Jan 09, 2007 12:31 am
Location: PA USA
Full name: Louis Zulli

Re: Fascinating chess position

Post by zullil »

ernest wrote:
zullil wrote:And don't try Stockfish.
Hi Louis,

Can you try Houdini?
No, sorry. I don't use Houdini. I'll try Critter, but I'm not hopeful.
Top
lucasart
Posts: 3243
Joined: Mon May 31, 2010 1:29 pm
Full name: lucasart

Re: Fascinating chess position

Post by lucasart »

rabbits wrote:I found this chess position in a chess book at home and put it to Houdini 1.5 w32 and Fritz 13 and while they found the first move for black without any trouble they were unable to continue with the winning line which is complicated. The game was between Henneberger - Nimzowitsch 1931 and was presented to highlight bad bishops. Because my computer does not have a really fast processor I thought I'd check here to see if there were any programmes that can find the solution.
[d] 8/8/2k1pn2/5p2/p1pP1Pp1/2P1K1P1/P7/4B3 b- - 01
The solution is : 1....Ne4 2 Ke2 Kd5 3 Ke3 Kd6! 4Ke2 Kc6 5 Ke3 Kd5
6 Ke2 Nd6! 7Ke3 Nb5 8 Bd2 Na3! 9Bc1 [no choice] Nb1 10 Bb2! a3!
11Ba1 Kd6! 12 Ke2 Kc6 13 Kd1 Kd5 14 Kc2 Ke4 15 Kxb1 Kf3 16 Bb2!
axb2! 17 a4 Kxg3 18 a5 Kh2! 19a6 g3 20a7 g2 21 a8=Q g1=Q 22 Kxb2
Qg2+ 23 Qxg2+ Kxg2 24 Ka3 Kf3 25 Kb4 Kxf4 26Kxc4 Ke3 27 d5 exd5
28Kxd5 f4 and white resigned. He loses the pawn race by a single move.
A fascinating game I thought and a position I doubt that any computer chess programme could solve. Thoughts anyone?
Allan
my weak engine DoubleCheck 2.3 playes the right moves without any difficulty... strange that a 2300 elo program solves this
Top
zullil
Posts: 6442
Joined: Tue Jan 09, 2007 12:31 am
Location: PA USA
Full name: Louis Zulli

Re: Fascinating chess position

Post by zullil »

Not what I'm seeing:

Code: Select all

uci
id name DoubleCheck 2.3
id author Lucas Braesch
option name Hash type spin default 64 min 4 max 4096
option name NullMove type check default true
option name IID type check default true
option name Delta type check default true
option name Futility type check default true
option name LMR type check default true
option name Razoring type check default true
uciok
setoption name Hash value 512
position fen 8/8/2k1pn2/5p2/p1pP1Pp1/2P1K1P1/P7/4B3 b - - 0 1
go infinite
info depth 1
info score cp 23 depth 1 nodes 25 time 1 pv Kc6d5
info depth 2
info score cp 25 depth 2 nodes 125 time 1 pv Nf6d5+ Ke3e2 Kc6d6
info depth 3
info score cp 19 depth 3 nodes 229 time 1 pv Kc6d5 Be1d2 Nf6e4
info depth 4
info score cp 21 depth 4 nodes 363 time 2 pv Kc6d5 Be1f2 Nf6e4
info depth 5
info score cp 28 depth 5 nodes 547 time 2 pv Kc6d5 Be1f2 Nf6e4 Bf2e1
info depth 6
info score cp 36 depth 6 nodes 1062 time 4 pv Nf6e4 Ke3e2 Kc6d5 Ke2e3 a4a3 Ke3e2
info depth 7
info score cp 24 depth 7 nodes 2784 time 8 pv Nf6e4 a2a3 Kc6d5
info depth 8
info currmove Nf6d7 currmovenumber 4
info currmove Nf6e8 currmovenumber 5
info currmove Nf6g8 currmovenumber 6
info currmove Nf6h5 currmovenumber 7
info currmove Nf6h7 currmovenumber 8
info currmove Kc6b5 currmovenumber 9
info currmove Kc6d7 currmovenumber 10
info currmove Kc6b7 currmovenumber 11
info currmove Kc6b6 currmovenumber 12
info currmove Nf6d5+ currmovenumber 13
info currmove e6e5 currmovenumber 14
info currmove a4a3 currmovenumber 15
info currmove Kc6c7 currmovenumber 16
info score cp 28 depth 8 nodes 6864 time 16 pv a4a3 Ke3d2 Kc6d5 Kd2e2 Nf6e4
info depth 9
info currmove a4a3 currmovenumber 1
info currmove Nf6e4 currmovenumber 2
info currmove Kc6d5 currmovenumber 3
info currmove Kc6d6 currmovenumber 4
info currmove Kc6c7 currmovenumber 5
info currmove Nf6d5+ currmovenumber 6
info currmove Nf6d7 currmovenumber 7
info currmove Nf6h5 currmovenumber 8
info currmove Nf6h7 currmovenumber 9
info currmove Nf6e8 currmovenumber 10
info currmove Nf6g8 currmovenumber 11
info currmove Kc6b5 currmovenumber 12
info currmove Kc6d7 currmovenumber 13
info currmove e6e5 currmovenumber 14
info currmove Kc6b6 currmovenumber 15
info currmove Kc6b7 currmovenumber 16
info score cp 19 depth 9 nodes 16636 time 37 pv a4a3 Ke3d2 Nf6e4+ Kd2e3 Kc6d6 Ke3e2 Kd6d5
info depth 10
info currmove a4a3 currmovenumber 1
info currmove Nf6e4 currmovenumber 2
info currmove Kc6d5 currmovenumber 3
info currmove Nf6d5+ currmovenumber 4
info currmove Nf6h5 currmovenumber 5
info currmove Nf6d7 currmovenumber 6
info currmove Nf6e8 currmovenumber 7
info currmove Nf6g8 currmovenumber 8
info currmove Nf6h7 currmovenumber 9
info currmove e6e5 currmovenumber 10
info currmove Kc6b7 currmovenumber 11
info currmove Kc6c7 currmovenumber 12
info currmove Kc6d7 currmovenumber 13
info currmove Kc6b6 currmovenumber 14
info currmove Kc6b5 currmovenumber 15
info currmove Kc6d6 currmovenumber 16
info score cp 19 depth 10 nodes 25693 time 52 pv a4a3 Ke3d2 Nf6e4+ Kd2e3 Kc6d6 Ke3e2 Kd6d5
info depth 11
info currmove a4a3 currmovenumber 1
info currmove Nf6e4 currmovenumber 2
info currmove Kc6d5 currmovenumber 3
info currmove Nf6d5+ currmovenumber 4
info currmove Kc6d6 currmovenumber 5
info currmove Nf6e8 currmovenumber 6
info currmove Nf6d7 currmovenumber 7
info currmove Nf6h7 currmovenumber 8
info currmove Nf6h5 currmovenumber 9
info currmove Kc6b6 currmovenumber 10
info currmove Nf6g8 currmovenumber 11
info currmove e6e5 currmovenumber 12
info currmove Kc6c7 currmovenumber 13
info currmove Kc6b5 currmovenumber 14
info currmove Kc6b7 currmovenumber 15
info currmove Kc6d7 currmovenumber 16
info score cp 21 depth 11 nodes 33840 time 64 pv a4a3 Be1d2 Kc6d5
info depth 12
info currmove a4a3 currmovenumber 1
info currmove Kc6d5 currmovenumber 2
info currmove Nf6e4 currmovenumber 3
info currmove Nf6d5+ currmovenumber 4
info currmove Kc6b5 currmovenumber 5
info currmove Nf6h7 currmovenumber 6
info currmove Nf6h5 currmovenumber 7
info currmove Nf6g8 currmovenumber 8
info currmove e6e5 currmovenumber 9
info currmove Nf6d7 currmovenumber 10
info currmove Nf6e8 currmovenumber 11
info currmove Kc6b7 currmovenumber 12
info currmove Kc6d7 currmovenumber 13
info currmove Kc6b6 currmovenumber 14
info currmove Kc6c7 currmovenumber 15
info currmove Kc6d6 currmovenumber 16
info score cp 24 depth 12 nodes 51038 time 96 pv Nf6e4 Ke3e2 Kc6b6 Ke2e3 a4a3 Ke3e2 Kb6b5 Ke2e3 Kb5c6
info depth 13
info currmove Nf6e4 currmovenumber 1
info currmove a4a3 currmovenumber 2
info currmove Kc6d5 currmovenumber 3
info currmove Nf6d5+ currmovenumber 4
info currmove Nf6e8 currmovenumber 5
info currmove Nf6h5 currmovenumber 6
info currmove Nf6g8 currmovenumber 7
info currmove Nf6h7 currmovenumber 8
info currmove Nf6d7 currmovenumber 9
info currmove Kc6b6 currmovenumber 10
info currmove Kc6d6 currmovenumber 11
info currmove Kc6c7 currmovenumber 12
info currmove Kc6b5 currmovenumber 13
info currmove Kc6d7 currmovenumber 14
info currmove Kc6b7 currmovenumber 15
info currmove e6e5 currmovenumber 16
info score cp 24 depth 13 nodes 83959 time 154 pv Nf6e4 Ke3e2 Kc6b6 Ke2d1 Kb6c7 Kd1e2 a4a3 Ke2e3 Kc7c6
info depth 14
info currmove Nf6e4 currmovenumber 1
info currmove a4a3 currmovenumber 2
info currmove Kc6d5 currmovenumber 3
info currmove Nf6d5+ currmovenumber 4
info currmove Nf6h5 currmovenumber 5
info currmove Nf6e8 currmovenumber 6
info currmove Nf6h7 currmovenumber 7
info currmove Nf6g8 currmovenumber 8
info currmove Nf6d7 currmovenumber 9
info currmove Kc6b6 currmovenumber 10
info currmove Kc6d7 currmovenumber 11
info currmove e6e5 currmovenumber 12
info currmove Kc6c7 currmovenumber 13
info currmove Kc6d6 currmovenumber 14
info currmove Kc6b7 currmovenumber 15
info currmove Kc6b5 currmovenumber 16
info score cp 28 depth 14 nodes 98188 time 174 pv Nf6e4 Ke3e2 Kc6b6 Ke2d1 Kb6c7 Kd1e2
info depth 15
info currmove Nf6e4 currmovenumber 1
info currmove a4a3 currmovenumber 2
info currmove Kc6d5 currmovenumber 3
info currmove Nf6d5+ currmovenumber 4
info currmove Nf6h5 currmovenumber 5
info currmove Nf6d7 currmovenumber 6
info currmove Nf6h7 currmovenumber 7
info currmove Nf6g8 currmovenumber 8
info currmove Nf6e8 currmovenumber 9
info currmove Kc6d6 currmovenumber 10
info currmove Kc6c7 currmovenumber 11
info currmove e6e5 currmovenumber 12
info currmove Kc6d7 currmovenumber 13
info currmove Kc6b7 currmovenumber 14
info currmove Kc6b5 currmovenumber 15
info currmove Kc6b6 currmovenumber 16
info score cp 25 depth 15 nodes 137236 time 228 pv Nf6e4 Ke3e2 Kc6b6 Ke2d1 Kb6c7 Kd1c1 Kc7d7 Kc1c2 Kd7c6
info depth 16
info currmove Nf6e4 currmovenumber 1
info currmove a4a3 currmovenumber 2
info currmove Kc6d5 currmovenumber 3
info currmove Nf6d5+ currmovenumber 4
info currmove Kc6b7 currmovenumber 5
info currmove Kc6c7 currmovenumber 6
info currmove Nf6d7 currmovenumber 7
info currmove Nf6h5 currmovenumber 8
info currmove Nf6h7 currmovenumber 9
info currmove Kc6b5 currmovenumber 10
info currmove Nf6e8 currmovenumber 11
info currmove Kc6d6 currmovenumber 12
info currmove Nf6g8 currmovenumber 13
info currmove Kc6b6 currmovenumber 14
info currmove Kc6d7 currmovenumber 15
info currmove e6e5 currmovenumber 16
info score cp 26 depth 16 nodes 181480 time 280 pv Nf6e4 Ke3e2 Kc6d6 Ke2e3 Kd6d5 Ke3e2 a4a3 Ke2d1 Ne4f6 Kd1e2 Kd5e4 Be1d2 Nf6d5 Ke2f2
info depth 17
info currmove Nf6e4 currmovenumber 1
info currmove a4a3 currmovenumber 2
info currmove Kc6d5 currmovenumber 3
info currmove Nf6d5+ currmovenumber 4
info currmove Kc6d7 currmovenumber 5
info currmove Kc6c7 currmovenumber 6
info currmove Kc6d6 currmovenumber 7
info currmove e6e5 currmovenumber 8
info currmove Kc6b7 currmovenumber 9
info currmove Kc6b6 currmovenumber 10
info currmove Nf6d7 currmovenumber 11
info currmove Nf6h7 currmovenumber 12
info currmove Nf6e8 currmovenumber 13
info currmove Nf6g8 currmovenumber 14
info currmove Kc6b5 currmovenumber 15
info currmove Nf6h5 currmovenumber 16
info score cp 25 depth 17 nodes 411876 time 526 pv Nf6e4 Ke3e2 Kc6d6 Ke2e3
info depth 18
info currmove Nf6e4 currmovenumber 1
info currmove Kc6d7 currmovenumber 2
info currmove a4a3 currmovenumber 3
info currmove Kc6d5 currmovenumber 4
info currmove Nf6d5+ currmovenumber 5
info currmove Nf6d7 currmovenumber 6
info currmove Kc6b6 currmovenumber 7
info currmove Kc6d6 currmovenumber 8
info currmove Kc6b5 currmovenumber 9
info currmove Nf6e8 currmovenumber 10
info currmove Kc6b7 currmovenumber 11
info currmove Nf6h5 currmovenumber 12
info currmove Nf6g8 currmovenumber 13
info currmove Kc6c7 currmovenumber 14
info currmove Nf6h7 currmovenumber 15
info currmove e6e5 currmovenumber 16
info score cp 25 depth 18 nodes 1499383 time 1338 pv Nf6e4 Ke3e2 Kc6d7 Ke2d1
info depth 19
info currmove Nf6e4 currmovenumber 1
info currmove Kc6d5 currmovenumber 2
info currmove a4a3 currmovenumber 3
info currmove Nf6d7 currmovenumber 4
info currmove Nf6d5+ currmovenumber 5
info currmove Kc6d6 currmovenumber 6
info currmove Kc6d7 currmovenumber 7
info currmove Kc6b6 currmovenumber 8
info currmove Kc6b7 currmovenumber 9
info currmove Kc6b5 currmovenumber 10
info currmove Nf6g8 currmovenumber 11
info currmove Nf6e8 currmovenumber 12
info currmove Kc6c7 currmovenumber 13
info currmove Nf6h5 currmovenumber 14
info currmove Nf6h7 currmovenumber 15
info currmove e6e5 currmovenumber 16
info score cp 26 depth 19 nodes 1522981 time 1354 pv Nf6e4 Ke3e2 Kc6d7 Ke2d1 a4a3 Kd1e2
info depth 20
info currmove Nf6e4 currmovenumber 1
info currmove Nf6d5+ currmovenumber 2
info currmove a4a3 currmovenumber 3
info currmove Nf6d7 currmovenumber 4
info currmove Kc6d6 currmovenumber 5
info currmove Kc6d5 currmovenumber 6
info currmove Kc6d7 currmovenumber 7
info currmove Kc6b6 currmovenumber 8
info currmove Kc6b7 currmovenumber 9
info currmove Nf6g8 currmovenumber 10
info currmove Nf6e8 currmovenumber 11
info currmove Kc6b5 currmovenumber 12
info currmove e6e5 currmovenumber 13
info currmove Nf6h5 currmovenumber 14
info currmove Kc6c7 currmovenumber 15
info currmove Nf6h7 currmovenumber 16
info score cp 27 depth 20 nodes 1587662 time 1395 pv Nf6e4 Ke3e2 Kc6d7 Ke2d1 a4a3 Kd1e2
info depth 21
info currmove Nf6e4 currmovenumber 1
info currmove a4a3 currmovenumber 2
info currmove Nf6d5+ currmovenumber 3
info currmove Nf6d7 currmovenumber 4
info currmove Kc6d6 currmovenumber 5
info currmove Kc6d5 currmovenumber 6
info currmove Kc6b6 currmovenumber 7
info currmove e6e5 currmovenumber 8
info currmove Kc6d7 currmovenumber 9
info currmove Nf6g8 currmovenumber 10
info currmove Nf6e8 currmovenumber 11
info currmove Nf6h7 currmovenumber 12
info currmove Nf6h5 currmovenumber 13
info currmove Kc6b7 currmovenumber 14
info currmove Kc6b5 currmovenumber 15
info currmove Kc6c7 currmovenumber 16
info score cp 25 depth 21 nodes 10179500 time 7232 pv Nf6e4
info depth 22
info currmove Nf6e4 currmovenumber 1
info currmove Nf6d5+ currmovenumber 2
info currmove Kc6b7 currmovenumber 3
info currmove a4a3 currmovenumber 4
info currmove Kc6b6 currmovenumber 5
info currmove Kc6d7 currmovenumber 6
info currmove Kc6d6 currmovenumber 7
info currmove Kc6d5 currmovenumber 8
info currmove Kc6b5 currmovenumber 9
info currmove Nf6e8 currmovenumber 10
info currmove Kc6c7 currmovenumber 11
info currmove Nf6g8 currmovenumber 12
info currmove Nf6d7 currmovenumber 13
info currmove Nf6h5 currmovenumber 14
info currmove Nf6h7 currmovenumber 15
info currmove e6e5 currmovenumber 16
info score cp 27 depth 22 nodes 10841911 time 7670 pv Nf6e4 Ke3e2 Kc6d5 Ke2d1 Ne4f6 Kd1e2
info depth 23
info currmove Nf6e4 currmovenumber 1
info currmove a4a3 currmovenumber 2
info currmove Nf6d5+ currmovenumber 3
info currmove Nf6d7 currmovenumber 4
info currmove Kc6d6 currmovenumber 5
info currmove Kc6d5 currmovenumber 6
info currmove e6e5 currmovenumber 7
info currmove Nf6e8 currmovenumber 8
info currmove Nf6h5 currmovenumber 9
info currmove Kc6d7 currmovenumber 10
info currmove Kc6b6 currmovenumber 11
info currmove Kc6b7 currmovenumber 12
info currmove Kc6c7 currmovenumber 13
info currmove Nf6h7 currmovenumber 14
info currmove Nf6g8 currmovenumber 15
info currmove Kc6b5 currmovenumber 16
info score cp 26 depth 23 nodes 11091623 time 7846 pv Nf6e4 Ke3e2 Kc6d5 Ke2d1 Ne4f6 Kd1e2
info depth 24
info currmove Nf6e4 currmovenumber 1
info currmove a4a3 currmovenumber 2
info currmove Nf6d5+ currmovenumber 3
info currmove Kc6d5 currmovenumber 4
info currmove Nf6d7 currmovenumber 5
info currmove Kc6d6 currmovenumber 6
info currmove Kc6c7 currmovenumber 7
info currmove Kc6d7 currmovenumber 8
info currmove Kc6b6 currmovenumber 9
info currmove Nf6e8 currmovenumber 10
info currmove Nf6g8 currmovenumber 11
info currmove Nf6h5 currmovenumber 12
info currmove e6e5 currmovenumber 13
info currmove Nf6h7 currmovenumber 14
info currmove Kc6b7 currmovenumber 15
info currmove Kc6b5 currmovenumber 16
info score cp 26 depth 24 nodes 11699170 time 8264 pv Nf6e4 Ke3e2 Kc6d5 Ke2d1 Ne4f6 Kd1e2
info depth 25
info currmove Nf6e4 currmovenumber 1
info currmove Nf6d5+ currmovenumber 2
info currmove a4a3 currmovenumber 3
info currmove Kc6d5 currmovenumber 4
info currmove Nf6d7 currmovenumber 5
info currmove Kc6c7 currmovenumber 6
info currmove Kc6d6 currmovenumber 7
info currmove Kc6d7 currmovenumber 8
info currmove Nf6h5 currmovenumber 9
info currmove Nf6e8 currmovenumber 10
info currmove Kc6b6 currmovenumber 11
info currmove e6e5 currmovenumber 12
info currmove Kc6b7 currmovenumber 13
info currmove Kc6b5 currmovenumber 14
info currmove Nf6g8 currmovenumber 15
info currmove Nf6h7 currmovenumber 16
info score cp 26 depth 25 nodes 12679634 time 8962 pv Nf6e4 Ke3e2 Kc6d5 Ke2d1 Ne4f6 Kd1e2 Kd5e4 Be1f2 Nf6d5 Bf2e1 Nd5e3 Be1d2 Ne3d5 Bd2e1 Nd5e3 Be1d2 Ne3d5 Bd2e1 Nd5e3 Be1d2 Ne3d5 Bd2e1 Nd5e3 Be1d2 Ne3d5 Bd2e1 Nd5e3 Be1d2 Ne3d5 Bd2e1 Nd5e3 Be1d2 Ne3d5 Bd2e1 Nd5e3 Be1d2 Ne3d5 Bd2e1 Nd5e3 Be1d2 Ne3d5 Bd2e1 Nd5e3 Be1d2 Ne3d5 Bd2e1 Nd5e3 Be1d2 Ne3d5 Bd2e1 Nd5e3 Be1d2 Ne3d5 Bd2e1 Nd5e3 Be1d2 Ne3d5 Bd2e1 Nd5e3 Be1d2 Ne3d5 Bd2e1 Nd5e3 Be1d2 Ne3d5 Bd2e1 Nd5e3 Be1d2 Ne3d5 Bd2e1 Nd5e3 Be1d2 Ne3d5 Bd2e1 Nd5e3 Be1d2 Ne3d5 Bd2e1 Nd5e3 Be1d2 Ne3d5 Bd2e1 Nd5e3 Be1d2 Ne3d5 Bd2e1 Nd5e3 Be1d2 Ne3d5 Bd2e1 Nd5e3 Be1d2 Ne3d5 Bd2e1 Nd5e3 Be1d2 Ne3d5 Bd2e1 Nd5e3 Be1d2 Ne3d5 Bd2e1 Nd5e3 Be1d2 Ne3d5 Bd2e1 Nd5e3 Be1d2 Ne3d5 Bd2e1 Nd5e3 Be1d2 Ne3d5 Bd2e1 Nd5e3 Be1d2 Ne3d5 Bd2e1 Nd5e3 Be1d2 Ne3d5 Bd2e1 Nd5e3 Be1d2 Ne3d5 Bd2e1 Nd5e3 Be1d2
info depth 26
info currmove Nf6e4 currmovenumber 1
info currmove a4a3 currmovenumber 2
info currmove Kc6d5 currmovenumber 3
info currmove Kc6d6 currmovenumber 4
info currmove Nf6d7 currmovenumber 5
info currmove Nf6d5+ currmovenumber 6
info currmove e6e5 currmovenumber 7
info currmove Kc6c7 currmovenumber 8
info currmove Kc6b6 currmovenumber 9
info currmove Kc6d7 currmovenumber 10
info currmove Nf6e8 currmovenumber 11
info currmove Nf6h5 currmovenumber 12
info currmove Kc6b5 currmovenumber 13
info currmove Kc6b7 currmovenumber 14
info currmove Nf6g8 currmovenumber 15
info currmove Nf6h7 currmovenumber 16
info score cp 26 depth 26 nodes 13878177 time 9741 pv Nf6e4 Ke3e2 Kc6d5 Ke2d1 Ne4f6 Kd1e2 Kd5e4 Be1f2 Nf6d5 Bf2e1 Nd5e3 Be1d2 Ne3d5 Bd2e1 Nd5e3 Be1d2 Ne3d5 Bd2e1 Nd5e3 Be1d2 Ne3d5 Bd2e1 Nd5e3 Be1d2 Ne3d5 Bd2e1 Nd5e3 Be1d2 Ne3d5 Bd2e1 Nd5e3 Be1d2 Ne3d5 Bd2e1 Nd5e3 Be1d2 Ne3d5 Bd2e1 Nd5e3 Be1d2 Ne3d5 Bd2e1 Nd5e3 Be1d2 Ne3d5 Bd2e1 Nd5e3 Be1d2 Ne3d5 Bd2e1 Nd5e3 Be1d2 Ne3d5 Bd2e1 Nd5e3 Be1d2 Ne3d5 Bd2e1 Nd5e3 Be1d2 Ne3d5 Bd2e1 Nd5e3 Be1d2 Ne3d5 Bd2e1 Nd5e3 Be1d2 Ne3d5 Bd2e1 Nd5e3 Be1d2 Ne3d5 Bd2e1 Nd5e3 Be1d2 Ne3d5 Bd2e1 Nd5e3 Be1d2 Ne3d5 Bd2e1 Nd5e3 Be1d2 Ne3d5 Bd2e1 Nd5e3 Be1d2 Ne3d5 Bd2e1 Nd5e3 Be1d2 Ne3d5 Bd2e1 Nd5e3 Be1d2 Ne3d5 Bd2e1 Nd5e3 Be1d2 Ne3d5 Bd2e1 Nd5e3 Be1d2 Ne3d5 Bd2e1 Nd5e3 Be1d2 Ne3d5 Bd2e1 Nd5e3 Be1d2 Ne3d5 Bd2e1 Nd5e3 Be1d2 Ne3d5 Bd2e1 Nd5e3 Be1d2 Ne3d5 Bd2e1 Nd5e3 Be1d2 Ne3d5 Bd2e1 Nd5e3 Be1d2
info depth 27
info currmove Nf6e4 currmovenumber 1
info currmove Nf6d5+ currmovenumber 2
info currmove a4a3 currmovenumber 3
info currmove Kc6d5 currmovenumber 4
info currmove Nf6h5 currmovenumber 5
info currmove Nf6e8 currmovenumber 6
info currmove Kc6b5 currmovenumber 7
info currmove e6e5 currmovenumber 8
info currmove Kc6d7 currmovenumber 9
info currmove Kc6b6 currmovenumber 10
info currmove Kc6b7 currmovenumber 11
info currmove Nf6d7 currmovenumber 12
info currmove Kc6d6 currmovenumber 13
info currmove Kc6c7 currmovenumber 14
info currmove Nf6g8 currmovenumber 15
info currmove Nf6h7 currmovenumber 16
info score cp 26 depth 27 nodes 19666882 time 14668 pv Nf6e4 Ke3e2 Kc6d5 Ke2d1 Ne4f6 Kd1e2
info depth 28
info currmove Nf6e4 currmovenumber 1
info currmove Kc6d5 currmovenumber 2
info currmove a4a3 currmovenumber 3
info currmove Nf6d5+ currmovenumber 4
info currmove Nf6e8 currmovenumber 5
info currmove Nf6h5 currmovenumber 6
info currmove Nf6d7 currmovenumber 7
info currmove e6e5 currmovenumber 8
info currmove Kc6d7 currmovenumber 9
info currmove Nf6h7 currmovenumber 10
info currmove Kc6b7 currmovenumber 11
info currmove Nf6g8 currmovenumber 12
info currmove Kc6b5 currmovenumber 13
info currmove Kc6d6 currmovenumber 14
info currmove Kc6c7 currmovenumber 15
info currmove Kc6b6 currmovenumber 16
info score cp 26 depth 28 nodes 31029903 time 24285 pv Nf6e4 Ke3e2 Kc6d5 Ke2d1 Ne4f6 Kd1e2
info depth 29
info currmove Nf6e4 currmovenumber 1
info currmove Nf6d5+ currmovenumber 2
info currmove a4a3 currmovenumber 3
info currmove Kc6d5 currmovenumber 4
info currmove Nf6e8 currmovenumber 5
info currmove e6e5 currmovenumber 6
info currmove Kc6d6 currmovenumber 7
info currmove Nf6h5 currmovenumber 8
info currmove Nf6d7 currmovenumber 9
info currmove Kc6b6 currmovenumber 10
info currmove Kc6d7 currmovenumber 11
info currmove Kc6b7 currmovenumber 12
info currmove Kc6c7 currmovenumber 13
info currmove Nf6h7 currmovenumber 14
info currmove Kc6b5 currmovenumber 15
info currmove Nf6g8 currmovenumber 16
info score cp 26 depth 29 nodes 81429185 time 61099 pv Nf6e4 Ke3e2 Kc6d5 Ke2e3 Ne4f6 Be1d2 Nf6e8 Bd2e1 Kd5c6 Be1d2 Kc6d6 Ke3e2 Kd6d5 Ke2e3
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Robert Flesher
Posts: 1290
Joined: Tue Aug 18, 2009 3:06 am

Re: Fascinating chess position

Post by Robert Flesher »

ernest wrote:
rabbits wrote:It certainly does Robert. I might have to get myself a faster computer
No need... Just let your test last longer.

Actually, with my Houdinis (1.5a, 2.0c) I dont'get Robert's result, and stay miserably with (-0.38) :(

Strange! I ran this test again and now Houdini does not find it in 5.00 min? What the hell?


I think when I was going over variations I had Houdini running (infinite). Then when I let it search it must have remembered my variations. This must be why my version found the solution once and cannot do it again. Interesting!
Last edited by Robert Flesher on Sun Dec 18, 2011 11:04 pm, edited 1 time in total.
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