Amazing test position!
Posted: Fri Jun 11, 2010 8:25 pm
I will be shocked if any engine can solve this!
what is your evaluation of this position?
what is your evaluation of this position?
Page 1 of 2
Re: Amazing test position!
Posted: Fri Jun 11, 2010 8:50 pm
If you are counting on your engine as help, don't
Re: Amazing test position!
Posted: Sat Jun 12, 2010 1:29 am
Stockfish-1.7.1 (8 threads) builds a fortress:Robert Flesher wrote:I will be shocked if any engine can solve this!
what is your evaluation of this position?
Code: Select all
Searching: 8/8/7p/3KNN1k/2p4p/8/3P2p1/8 w - -
infinite: 1 ponder: 0 time: 0 increment: 0 moves to go: 0
2 +0.93 00:01 266 Nf3 h3 Kxc4
3 +1.37 00:01 444 Nf3 h3 Ke4
4 -0.28 00:01 1312 Nf3 h3 Ng7+ Kg4 Ke4
4 +0.65 00:01 2230 Ng7+ Kg5 Ne6+ Kf6 Nf3 h3
5 +0.69 00:01 2821 Ng7+ Kg5 Ne6+ Kf6 Nf3 h3 Ng1
6 < +0.28 00:01 6002 Ng7+ Kg5 Ne6+ Kf6 Nf3 h3 Ng1 h2
6 < -0.12 00:01 8347 Ng7+ Kg5 Ne6+ Kf6 Nf3 h3 Ng1 h2
6 +0.44 00:01 10442 Ng7+ Kg5 Nf3+ Kg4 Ke4 h3 Nf5 h5 Nd6 Kg3 Nxc4
7 < +0.15 00:01 15035 Ng7+ Kg5 Nf3+ Kf4 Ng1 Kg4 Kxc4 h3 Kd4 h2
7 < -0.12 00:01 17400 Ng7+ Kg5 Nf3+ Kf4 Ng1 Kg4 Kxc4 h3 Kd4 h2
7 -0.53 00:01 19636 Ng7+ Kg5 Nf3+ Kf4 Ng1 Kg4 Ke4 h3 Nf3 Kg3 Nf5+ Kf2
Nxh6
8 -1.33 00:01 45308 Ng7+ Kg5 Nf3+ Kf4 Ng1 Kg4 Ne6 h3 Nxh3 Kxh3 Nf4+
Kg3 Nxg2 Kxg2 Kxc4 h5 Kd3 h4 Ke4
9 -2.06 00:01 90656 Ng7+ Kg5 Nf3+ Kf4 Ng1 Kg4 Ne6 h3 Nxh3 Kxh3 Nf4+
Kg3 Ne2+ Kf2 Nf4 Kf3 Nh3 Kg3 Ng1 Kf2 Nh3+ Kf1
Kxc4
10 < -3.19 00:01 145038 Ng7+ Kg5 Nf3+ Kf4 Ng1 Kg4 Ne6 h3 Nxh3 Kxh3 Nf4+
Kg3 Ne2+ Kf2 Nf4 Kf3 Nh3 Kg3 Ng1 h5 Kxc4 h4 d4 h3
d5 h2 Ne2+ Kf2
10 -1.90 00:01 163583 Ng3+ hxg3 Nf3 Kg4 Ke4 h5 Ne5+ Kh4 Nf3+ Kh3 Ke3 h4
Kf4 g1=N Nxg1+ Kg2 Ne2 Kf2 Nd4
11 < -2.42 00:01 183403 Ng3+ hxg3 Nf3 Kg4 Ke4 h5 Ne5+ Kh3 Nf3 h4 Kf4 g1=N
Nxg1+ Kg2 Ne2 Kf2 Nd4 h3
11 < -2.95 00:01 231835 Ng3+ hxg3 Nf3 Kg4 Ke4 h5 Ne5+ Kh3 Nf3 h4 Kf4 g1=N
Nxg1+ Kg2 Ne2 Kf2 Nd4 h3
11 -2.67 00:01 247590 Ng3+ hxg3 Nf3 Kg4 Ke4 h5 Ne5+ Kh3 Nf3 h4 Kf5 g1=N
Nxg1+ Kg2 Ne2 Kf1 Nf4 g2 Nh3 Ke1
12 < -3.52 00:01 272106 Ng3+ hxg3 Nf3 Kg4 Ke4 h5 Ne5+ Kh3 Nf3 h4 Kf5 g1=N
Nxg1+ Kg2 Ne2 Kf2 Nf4 g2 Nxg2 Kxg2
12 > -1.82 00:01 304259 Ng7+ Kg5 Nf3+ Kf4 Ng1 Kg4 Ne6 h3 Nxh3 Kxh3 Nf4+
Kg3 Ne2+ Kf2 Nf4 Kf3 Nh3 Kg3 Ng1 h5 Kxc4 h4 d4 h3
d5 h2 Ne2+ Kf2
12 -1.98 00:01 328008 Ng7+ Kg5 Nf3+ Kf4 Ng1 Kg4 Ne6 h3 Nxh3 Kxh3 Nf4+
Kg3 Ne2+ Kf2 Nf4 Kf3 Nh3 h5 Kxc4 Kg3 Ng1 h4 d4 h3
d5 h2 Ne2+ Kf2
13 < -3.07 00:01 627522 Ng7+ Kg5 Nf3+ Kg4 Ke4 h3 Nf5 g1=Q Nxg1 h2 Nxh6+
Kh5
13 -2.18 00:01 886707 Ng7+ Kg5 Nf3+ Kg4 Ne5+ Kf4 Nh5+ Kg5 Ng3 hxg3 Nf3+
Kg4 Ke4 h5 Ne5+ Kh3 Nf3 h4 Kf5 g1=N Nxg1+ Kg2 Ne2
Kf2 Nf4 g2 Nxg2 Kxg2
14 < -2.75 00:01 1175k Ng7+ Kg5 Nf3+ Kg4 Ne5+ Kf4 Nh5+ Kg5 Ng3 hxg3 Nf3+
Kg4 Ke4 h5 Ne5+ Kh3 Nf3 h4 Kf5 g1=N Nxg1+ Kg2 Ne2
Kf2 Nf4 g2 Nxg2 Kxg2
14 < -3.31 00:01 1387k Ng7+ Kg5 Nf3+ Kg4 Ne5+ Kf4 Nh5+ Kg5 Ng3 hxg3 Nf3+
Kg4 Ke4 h5 Ne5+ Kh3 Nf3 h4 Kf5 g1=N Nxg1+ Kg2 Ne2
Kf2 Nf4 g2 Nxg2 Kxg2
14 -4.00 00:01 1785k Ng7+ Kg5 Nf3+ Kg4 Ne5+ Kf4 Nh5+ Kg5 Ng3 hxg3 Ke4
g1=N Nf7+ Kg4 Nxh6+ Kh3 Nf5 g2 Nd4 Kg4 Nf5 Nf3
Ne3+ Kg3 Nxg2 Kxg2 Ke3 Kg3 d3
15 -3.88 00:01 2556k Ng7+ Kg5 Nf3+ Kg4 Ne5+ Kf4 Nh5+ Kg5 Ng3 hxg3 Ke4
g1=N Nf7+ Kg4 Nxh6+ Kh3 Nf5 g2 Nd4 Kg4 Nf5 Nf3
Ne3+ Kg3 Nxg2 Kxg2 Ke3 Kg3 d4 Kg4 d5 Ne5 Kd4 Kf5
d6 Ke6
16 -4.32 00:01 5181k Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+
Kh5 Nf3 h1=Q Nf5 Qb1+ Kf4 Qb4 N5d4 Kg6 Ke5 c3
dxc3 Qxc3 Nh4+ Kf7 Nf5 Qc5+ Ke4 Kf6
17 -4.53 00:02 6707k Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+
Kh5 Nf3 h1=Q Nf5 Qb1+ Kf4 Qb4 N5d4 Kg6 Ke5 c3
dxc3 Qxc3 Nh4+ Kf7 Nf5 Qc5+ Kf4 Kf6 Ke4 Qe5+ Kd3
Qd5
18 -4.53 00:02 9769k Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+
Kh5 Nf3 h1=Q Nf5 Qb1+ Kf4 Qb4 Ke5 Kg4 Nh2+ Kh3
Nf3 Kg2 N5d4 Kg3 Ke4 Qb7+ Ke5 Qa8 Kd6 Kf4 Kc5
Qc8+ Kd5 Qg8+ Kc5 Ke4
19 < -4.65 00:02 12902k Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+
Kh5 Nf3 h1=Q Nf5 Qb1+ Kf4 Qb4 Ke5 Kg4 Nh2+ Kh3
Nf3 Kg2 N5d4 Kg3 Ke4 Qb7+ Ke5 Qa8 Kd6 Kf4 Kc5
Qc8+ Kd5 Qg8+ Kc5 Ke4
19 -4.65 00:03 13850k Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+
Kh5 Nf3 h1=Q Nf5 Qb1+ Kf4 Qb4 N5d4 Kg6 Ke3 Qe7+
Kf4 Kf6 Nc6 Qc7+ Nce5 c3 dxc3 Qxc3 Ke4 Qb4+ Kd5
Qb7+ Kd6 Qe4
20 -4.65 00:03 17550k Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+
Kh5 Nf3 h1=Q Nf5 Qb1+ Kf4 Qb4 N5d4 Kg6 Nc6 Qd6+
Nce5+ Kf6 Ke4 Qb4 Kd5 c3 dxc3 Qxc3 Nd7+ Ke7 Nde5
Qa5+ Ke4 Qb4+ Nd4 Kd6 Nc6 Qe1+ Kf4
21 < -4.73 00:04 22827k Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+
Kh5 Nf3 h1=Q Nf5 Qb1+ Kf4 Qb4 N5d4 Kg6 Nc6 Qd6+
Nce5+ Kf6 Ke4 Qb4 Kd5 c3 dxc3 Qxc3 Nd7+ Ke7 Nde5
Qa5+ Ke4 Qb4+ Nd4 Kd6 Nc6 Qe1+ Kf4 Qc1+ Ke4 Qg5
21 -4.77 00:05 28505k Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+
Kh5 Nf3 h1=Q Nf5 Qb1+ Kf4 Qb4 N5d4 Kg6 Nc6 Qd6+
Nce5+ Kf6 Ke4 Qb4 Nc6 Qb1+ Kd5 Qd3+ Ncd4 c3 dxc3
Qxc3 Ke4 Qc5 Ke3 Qa3+ Ke4 Qd6 Kd3 Qa3+ Kc4 Qa6+
Kd5 Qa3 Kc4
22 -4.73 00:05 35999k Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+
Kh5 Nf3 h1=Q Nf5 Qb1+ Kf4 Qb4 N5d4 Kg6 Nc6 Qd6+
Nce5+ Kf6 Ke4 Qb4 Nc6 Qb1+ Kd5 Qd3+ Ncd4 c3 dxc3
Qxc3 Ke4 Qc5 Ke3 Qa3+ Ke4 Qd6 Kd3 Qd5 Ke3 Ke7
23 -4.73 00:07 46222k Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+
Kh5 Nf3 h1=Q Nf5 Qb1+ Kf4 Qb4 N5d4 Kg6 Nc6 Qd6+
Nce5+ Kf6 Ke4 Qb4 Nc6 Qb1+ Kd5 Qd3+ Nfd4 Qxd2
Kxc4 Qc1+ Kd5 Qg5+ Ke4 Qg4+ Kd5 Qg2+ Kc4 Qe4 Kc5
Kg5 Nb4 Kf4 Nd5+ Ke5
24 < -4.81 00:09 66033k Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+
Kh5 Nf3 h1=Q Nf5 Qb1+ Kf4 Qb4 N5d4 Kg6 Ke3 Qe7+
Kf4 Kf6 Nf5 Qc7+ Ke4 c3 dxc3 Qc6+ Kf4 Qxc3 N3d4
Qa5 Ke3 Qe5+ Kd3 Qf4 Ne3 Ke5 Nc4+ Kf6 Ne3
24 -4.81 00:10 70615k Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+
Kh5 Nf3 h1=Q Nf5 Qb1+ Kf4 Qb4 N5d4 Kg6 Ke3 Kf6
Ne5 c3 dxc3 Qxc3+ Nd3 Qc7 Nf3 Qd6 Nd4 Qd5 Nb4 Qd7
Kd3 Ke5
25 -4.81 00:11 82503k Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+
Kh5 Nf3 h1=Q Nf5 Qb1+ Kf4 Qb4 N5d4 Kg6 Ke3 Kf6
Ne5 c3 dxc3 Qxc3+ Nd3 Qc7 Nf3 Qa5 Nd4 Qg5+ Ke4
Qg6+ Ke3 Qg4 Nf3 Qd7 Nd2 Qa7+ Kf4 Qc7+ Ke4 Qc6+
Kd4 Kf5
26 > -4.73 00:13 97704k Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+
Kh5 Nf3 h1=Q Nf5 Qb1+ Kf4 Qb4 N5d4 Kg6 Ke4 Kf6
Kd5 c3 dxc3 Qxc3 Ke4 Qb4 Kd3 Qa3+ Ke4 Qe7+ Kd5
Qf7+ Kc5 Qh5+ Kc4 Qf7+ Kc5
26 -4.73 00:13 99297k Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+
Kh5 Nf3 h1=Q Nf5 Qb1+ Kf4 Qb4 N5d4 Kg6 Ke4 Kf6
Kd5 c3 dxc3 Qxc3 Ke4 Qb4 Kd3 Qa3+ Ke4 Qe7+ Kd5
Qf7+ Kc5 Qc7+ Kd5 Qa5+ Ke4 Qa8+ Ke3 Qd5 Kf4 Qd7
Ke3 Qb7 Kd3 Qd5 Ke3 Ke7 Nd2 Qg5+ Kd3
27 -4.73 00:16 130444k Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+
Kh5 Nf3 h1=Q Nf5 Qb1+ Kf4 Qb4 N5d4 Kg6 Ke4 Kf6
Kd5 c3 dxc3 Qxc3 Ke4 Qb4 Kd3 Qa3+ Ke4 Qe7+ Kd5
Qf7+ Ke4 Qb7+ Kd3 Qb4 Ke4 Qc3 Kd5 Qa5+ Ke4 Qa8+
Ke3 Qd5 Kf4 Ke7 Nf5+ Ke6 Ng5+ Kf6 Ne4+ Ke6 Ng5+
28 < -4.81 00:21 170271k Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+
Kh5 Nf3 h1=Q Nf5 Qb1+ Kf4 Qb4 N5d4 Kg6 Ke4 Kf6
Kd5 c3 dxc3 Qxc3 Ke4 Qb4 Kd3 Qa3+ Ke4 Qa8+ Ke3
Ke7 Kf4 Kd6 Nf5+ Kc5 Ke3 Qd5 Kf4 Qd3 Ne5 Qd2+ Ke4
Qb4+ Ke3 Kd5
28 -4.81 00:22 179640k Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+
Kh5 Nf3 h1=Q Nf5 Qb1+ Kf4 Qb4 N5d4 Kg6 Ke4 Kf6
Nc6 Qb1+ Kd5 Qb5+ Kd6 Qb3 Nfd4 Qd3 Kd5 Qxd2 Kxc4
Qg5 Kd3 Qg6+ Kc4 Kg5 Kd5 Kf4 Ne6+ Ke3 Ke5 Qg3+
Kd5 Qg2+ Kd6 Qe4 Ne5 Qb4+ Kc6 Ke4 Nc5+ Kxe5 Nd3+
29 -4.85 00:30 254266k Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+
Kh5 Nf3 h1=Q Nf5 Qb1+ Kf4 Qb4 N5d4 Kg6 Ke4 Kf6
Nc6 Qb1+ Kd5 Qb5+ Kd6 Qb3 Nfd4 Qd3 Kd5 Qxd2 Kxc4
Qg5 Kd3 Qg6+ Kc4 Kg5 Kd5 Kf4 Ne6+ Ke3 Ke5 Qg3+
Kd5 Qg2+ Kd6 Qh2+ Kd5 Qh1+ Kc5 Qe4 Ncd4 Qe5+ Kc4
Ke4
30 -4.85 00:39 333065k Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+
Kh5 Nf3 h1=Q Nf5 Qb1+ Kf4 Qb4 N5d4 Kg6 Ke4 Kf6
Nc6 Qb1+ Kd5 Qb5+ Kd6 Qb3 Nfd4 Qd3 Kd5 Qxd2 Kxc4
Qg5 Kd3 Qg6+ Kc4 Kg5 Kd5 Kf4 Ne6+ Ke3 Ke5 Qg3+
Kd5 Qg2+ Kd6 Qh2+ Kd5 Qh1+ Kc5 Qc1+ Kd5 Qb1 Ne5
Qe4+ Kd6 Qb4+ Kc6 Ke4 Nc5+ Kxe5 Nd3+
31 < -4.93 00:54 472029k Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+
Kh5 Nf3 h1=Q Nf5 Qb1+ Kf4 Qb4 N5d4 Kg6 Ke4 Kf6
Nc6 Qb3 Nfe5 Qc2+ Ke3 Qc1 Ke2 c3 Ng4+ Kg5
31 -4.93 00:58 504981k Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+
Kh5 Nf3 h1=Q Nf5 Qb1+ Kf4 Qb4 N5d4 Kg6 Ke4 Kf6
Nc6 Qb3 Ncd4 Qb7+ Kf4 Qc7+ Ke3 c3 dxc3 Qxc3+ Ke4
Qb4 Kd3 Qb1+ Ke3 Qg6 Kd2 Qe4 Kc3 Ke7 Kb4 Kd6 Kc4
Qf4 Kd3 Kd5
32 -4.93 01:12 635044k Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+
Kh5 Nf3 h1=Q Nf5 Qb1+ Kf4 Qb4 N5d4 Kg6 Ke4 Kf6
Nc6 Qb3 Ncd4 Qb7+ Kf4 Qc7+ Ke3 Qd6 Ke4 Qc5 Ke3
Qd5 Kf4 Qd7 Ke3 Qe7+ Kf4 Qe8 Kg3 Qe4 Kf2 Qd3 Nc6
Qd6 Ncd4 Qa3 Ke2 Qd3+ Kf2 c3 dxc3 Qxc3 Ke2 Kg6
Nh4+ Kg5 Nhf5 Kf6
33 < -5.01 01:40 900694k Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+
Kh5 Nf3 h1=Q Nf5
33 -5.01 01:53 1014M Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+
Kh5 Nf3 h1=Q Nf5 Kg4 Ne3+ Kg3 Nf5+ Kf2 Nd4 Qh7+
Kd5 Qg8+ Kc5 Qc8+ Kd5 c3 dxc3 Qxc3 Ne5 Qa5+ Kd6
Qa6+ Kd5 Qa8+ Nec6 Qg8+ Ke4 Qg2+ Ke5 Ke3 Nf5+ Kd2
Ncd4 Kd3 Ne6 Qe4+ Kf6 Qb4 Ke5 Qe1+ Kf6 Ke4 Ng5+
Kd5 Ne7+ Kc4 Nf5 Qc3+ Ke6 Kd3 Nd6 Qc5
34 < -5.09 02:16 1228M Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+
Kh5 Nf3 h1=Q Nf5 Kg4 Ne3+ Kg3 Nf5+ Kf2 Nd4 Qh7+
Kd5 Qg8+ Kc5 Qc8+ Kd5 c3 dxc3 Qxc3 Ne5 Qa5+
34 -5.09 02:23 1284M Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+
Kh5 Nf3 h1=Q Nf5 Kg4 Ne3+ Kg3 Nf5+ Kf2 Nd4 Qh7+
Kd5 Qg8+ Kc5 Qc8+ Kd5 c3 dxc3 Qxc3 Ne5 Qa5+ Kd6
Qa6+ Kd5 Qb7+ Kd6 Qb8+ Kd5 Qd8+ Ke4 Qh4+ Kd5 Qh1+
Ke6 Ke3 Nb3 Qh3+ Kd6 Ke4 Nd2+ Kf4 Ndc4 Qg2 Kc5
Qg1+ Kb4 Ke4 Nd7 Qd4 Nc5+ Kd5
35 < -5.21 03:11 1760M Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q
35 < -5.33 04:00 2224M Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+
Kh5 Nf3 h1=Q Nf5 Kg4 Ne3+ Kg3 Nf5+ Kf2 Nd4 Qb1+
Kd5 Qa2 Kc5 Kg3 Kb5 Kf4 Kb4 Ke4 Kb5 Kd5
35 -5.33 04:13 2345M Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+
Kh5 Nf3 h1=Q Nf5 Kg4 Ne3+ Kg3 Nf5+ Kf2 Nd4 Qb1+
Kd5 Qa2 Kc5 Kg3 Ne5 Qa5+ Nb5 Qxd2 Nxc4 Qf2+ Kb4
Qf5 Nd4 Qd5 Nb5 Kf3 Nbd6 Ke2 Nb5 Qg5 Nbd6 Kd3 Nb6
Qf4+ Kc5 Qd4+ Kc6 Qf6 Nc4 Kd4 Nd2
36 -5.33 05:03 2806M Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+
Kh5 Nf3 h1=Q Nf5 Kg4 Ne3+ Kg3 Nf5+ Kf2 Nd4 Qb1+
Kd5 Qa2 Kc5 Kg3 Ne5 Qa5+ Nb5 Qxd2 Nxc4 Qf2+ Kb4
Qf5 Nd4 Qd5 Nb5 Kf3 Nbd6 Ke2 Nb5 Qg5 Nbd6 Kd3 Nb6
Qf4+ Kc5 Qd4+ Kc6 Qf6 Nc4 Qf4 Nb6 Kd4 Nbc4 Qg4
Nd2 Qf4 Nb3+ Ke5 Nc5 Qf3+
37 > -5.21 06:18 3573M Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+
Kh5 Nf3 h1=Q Nf5 Kg4 Ne3+ Kg3 Nf5+ Kf2 Nd4 Qb1+
Kd5 Qa2 Kc5 Kg3 Ne5 Qa5+ Nb5 Qxd2 Nxc4 Qf2+ Kd5
Qf5+ Kc6 Qc8+ Kd5 Qg8+ Kc5 Qg5+ Kc6 Kf3 Nbd6
37 -5.21 06:20 3588M Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+
Kh5 Nf3 h1=Q Nf5 Kg4 Ne3+ Kg3 Nf5+ Kf2 Nd4 Qb1+
Kd5 Qa2 Kc5 Kg3 Ne5 Qa5+ Nb5 Qxd2 Nxc4 Qf2+ Kd5
Qf5+ Kc6 Qf3+ Kc5 Qh5+ Kb4 Qf5 Nd4 Qd5 Nb5 Kf4
Nbd6 Qh5 Nb5 Qf5 Nc3 Qf8+ Kb5 Qh8 Ne2+ Kf3 Nc1
Qh5+ Kc6 Kf4 Nd3+ Ke4 Nc5+ Kd4
38 > -5.09 06:45 3825M Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1
38 < -5.33 07:59 4579M Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+
Kh5 Nf3 h1=Q Nf5 Kg4 Ne3+ Kg3 Nf5+ Kf2 Nd4 Qb1+
Kd5 Qa2 Kc5 Kg3 Ne5 Qa5+ Nb5 Qxd2 Kxc4 Qf4+ Kd5
Qf1 Nc3 Kf4 Ng6+ Kf5 Ne7+ Kf6 Ng8+ Kg7
38 -5.17 09:37 5519M Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+
Kh5 Nf3 h1=Q Nf5 Kg4 Ne3+ Kg3 Nf5+ Kf2 Nd4 Qb1+
Kd5 Qa2 Kc5 Kg3 Ne5 Qxd2 Nxc4 Qg5+ Kc6 Qg8 Nf5+
Kf3 Nfd6 Qa8+ Kc5 Kf4 Nb5 Qc8+ Kb4 Qg8 Nbd6 Qg5
Kb3 Qc5 Kc3 Qd5 Kb4 Qc6 Nb5 Qh6 Kc5 Qh5+ Kb4 Qg4
Kc3 Qh3+ Kd4
39 < -5.29 10:57 6285M Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q
39 < -5.41 13:42 7897M Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q
39 -5.41 15:37 8985M Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+
Kh5 Nf3 h1=Q Nf5 Kg4 Ne3+ Kg3 Nf5+ Kf2 Nd4 Qb1+
Kd5 Qa2 Kc5 Kg3 Ne5 Qxd2 Nxc4 Qg5+ Kd6 Qg8 Ne6
Kf3 Ne5+ Ke4 Nc5+ Kf5 Ned3 Qg2 Nb4 Qg6+ Kd5 Qg8+
Kd4 Qg4+ Kc3 Ke5 Ncd3+ Kd6 Kd2 Qg7 Kc2 Ke6 Nc5+
Ke5 Kc3 Qg1 Ncd3+ Ke4 Nc2 Qg7+ Kd2 Qd7 Nb4 Qd4
Kd1 Qc3 Ke2 Qc8 Kd2 Qd7 Ke2 Qg4+
40 -5.45 22:41 13174M Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+
Kh5 Nf3 h1=Q Nf5 Kg4 Ne3+ Kg3 Nf5+ Kf2 Nd4 Qb1+
Kd5 Qa2 Kc5 Kg3 Ne5 Qxd2 Nxc4 Qg5+ Kd6 Qg8 Ne6
Kf3 Ne5+ Ke4 Nc5+ Kf5 Ned3 Qg2 Nb4 Qg6+ Kd5 Qg8+
Kd4 Qg4+ Kc3 Ke5 Ncd3+ Kd6 Kd2 Qg7 Kc2 Ke6 Nc5+
Ke5 Kc3 Qg1 Ncd3+ Ke4 Nc2 Qg7+ Kd2 Qg5+ Kc3 Qf6+
Kd2 Qd6 Nb4 Qd4 Kc2 Qh8 Kd2 Qh2+ Kc3 Qc7+ Kd2 Qc4
Nf2+ Kd4 Nc2+ Ke5 Ne3 Qb4+ Ke2 Qb5+ Kf3 Qc6+ Ke2
41 < -5.62 32:25 19037M Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q
41 -5.41 40:38 24067M Kc6 g1=Q Nxh4 Qb1 Nhf3 Qb4 Kd5 c3 dxc3 Qxc3 Kd6
Qa3+ Kd5 Qb3+ Ke4 Qc2+ Kd5 Qc1 Ke4 Qb1+ Kd5 Qb5+
Kd4 Qb2+ Kd5 Qb1 Kd4 Qb7 Ke3 Qb4 Kd3 Qa4 Ke3 Qa2
Ke4 Qb3 Kd4 Qb4+ Ke3 Qc5+ Ke4 Qc2+
42 -5.41 42:41 25350M Kc6 g1=Q Nxh4 Qb1 Nhf3 Qb4 Kd5 c3 dxc3 Qxc3 Kd6
Qa3+ Kd5 Qb3+ Ke4 Qc2+ Kd5 Qc1 Ke4 Qb1+ Kd5 Qb5+
Kd4 Qb2+ Kd5 Qb1 Kd4 Qb5 Ke4 Qe2+ Kf4 Qa6 Ke4
Qb7+ Kd4 Qb4+ Kd5 Qb6 Ke4 Qb3 Kd4 Qb7 Kc5
43 < -5.49 45:47 27228M Kc6 g1=Q Nxh4 Qb1 Nhf3 Qc1 Kc5 c3 dxc3 Qxc3+ Kd6
Qa3+ Kd5 Qc1 Nd4 Kg5 Ndf3+ Kf6 Nd7+ Kf5 Nd4+ Kg5
Ne6+ Kg6 Ne5+ Kf6 Ng4+ Kf5 Nf2 Qb1
43 < -5.58 56:00 33482M Kc6 g1=Q Nxh4 Qb1 Nhf3 Qc1 Kd6 c3 dxc3 Qxc3 Kd5
Qa5+ Ke6 Qa2+
43 -5.41 1:07:17 40406M Kc6 g1=Q Nxh4 Qc1 Nhf3 Qa3 Kd5 Qa4 Kc5 Qa2 Kc6
Qb3 Kc5 c3 dxc3 Qxc3+ Kd5 Qb3+ Ke4 Qb4+ Kd5 Qb6
Ke4 Qb7+ Kd4 Qb1 Kc5 Qb3 Kd4 Qd1+ Ke4 Qe2+ Kd5
Qb5+ Kd4 Qa4+ Kd5 Qb4 Ke6 Qb3+ Kf5 Qb1+ Kf4 Qb4+
Kf5 Qc3 Ke4 Qc1 Kd5 Qc2 Kd4 Qc7 Ke4 Qd6 Nd4 Qc5
Ndf3
44 -5.41 1:12:56 43954M Kc6 g1=Q Nxh4 Qc1 Nhf3 Qa3 Kd5 Qa4 Kc5 Qa2 Kc6
Qb3 Kd6 c3 dxc3 Qxc3 Kd5 Qb3+ Ke4 Qb4+ Kd5 Qa5+
Kd4 Qb6+ Kd5 Qb5+ Kd4 Qa4+ Kd5 Qb4 Ke6 Qb3+ Kf5
Qb1+ Kf4 Qb4+ Kf5 Qc3 Ke4 Qc1 Kd5 Qc2 Kd4 Qd1+
Ke4 Qe2+ Kd4 Qc2 Kd5 Qc1 Ke4 Qd1 Kf5 Qc2+ Ke6 Qe4
Kd6 Qf5 Kd5 Qf4 Kd6 Qf5
45 > -5.33 1:33:01 56462M Kc6 g1=Q Nxh4 Qc1 Nhf3 c3 dxc3 Qxc3+ Kd5 Qb3+ Ke4
Qb4+ Kd5 Qb7+ Kd6 Qe4 Kc5 Qe3+ Kd5 Qf4 Kd6
45 -5.37 1:37:08 58966M Kc6 g1=Q Nxh4 Qc1 Nhf3 c3 dxc3 Qxc3+ Kd5 Qb3+ Ke4
Qb4+ Kd5 Qb7+ Kd6 Qe4 Kc5 Qe3+ Kd5 Qf4 Kd6 Qc1
Kd5 Qd1+ Ke6 Qd8 Kf5 Qd5 Kf4 Qd1 Kf5 Qc2+ Ke6 Qb1
Kd5 Qb4 Ke6 Qb6+ Kd5 Qb5+ Ke4 Qb7+ Kd4 Qg7 Ke4
Qf6 Ke3 Qd6 Ke4 Qc5 Kd3 Qb4 Ke3 Qa4 Nd4 Qa3+ Ke4
Qa8+ Kf4 Qa6 Ndf3 Qa4+ Ke3 Qb4
Nodes: 67260547651
Nodes/second: 10159364
Best move: Kc6
Ponder move: g1=Q
Re: Amazing test position!
Posted: Sat Jun 12, 2010 2:04 am
On my dual core laptop, Naum 4 is the only engine to find a draw (within 10 minutes).
Code: Select all
New game
8/8/7p/3KNN1k/2p4p/8/3P2p1/8 w - - 0 1
Analysis by Naum 4:
+- (3.66) 1.Nf3 Kg4 2.Kxc4 Kxf5 3.Kc5 Ke4 00:00:00
+- (4.00) 1.Nf3 Kg4 2.Ke4 h3 3.Nxh6+ Kg3 4.Ke3 00:00:00
+- (2.19) 1.Ng7+ Kg5 2.Nf3+ Kg4 3.Ke4 Kg3 4.Nf5+ Kf2 00:00:00
+- (3.59) 1.Ng7+ Kg5 2.Nf3+ Kg4 3.Ke4 Kg3 4.Nf5+ Kf2 5.N5xh4 00:00:00
+/= (0.32) 1.Ng7+ Kg5 2.Nf3+ Kg4 3.Ke4 h3 4.Nf5 h5 5.Nh2+ Kg5 00:00:00
+/= (0.32) 1.Ng7+ Kg5 2.Nf3+ Kg4 3.Ke4 h3 4.Nf5 h5 5.Nh2+ Kg5 6.Nd4 00:00:00
= (0.00) 1.Ng7+ Kg5 2.Nf3+ Kg4 3.Nh2+ Kg3 4.Nf5+ Kxh2 5.Nxh4 h5 6.Kxc4 Kg3 00:00:01
= (0.00) 1.Ng7+ Kg5 2.Nf3+ Kg4 3.Nh2+ Kg3 4.Nf5+ Kxh2 5.Nxh4 h5 6.Kxc4 Kg3 7.Nxg2 00:00:01
+/- (0.80) 1.Ng3+ hxg3 2.Nf3 Kg4 3.Ng1 Kf5 4.Kxc4 Ke6 5.Kd4 h5 6.Ke4 h4 7.Kf3 00:00:02
+/- (1.13) 1.Ng3+ hxg3 2.Nf3 Kg4 3.Ng1 Kf5 4.Kxc4 Ke6 5.Kd4 h5 6.Ke4 h4 7.Nh3 Kf6 00:00:02
= (0.00) 1.Ng7+ Kg5 2.Nf3+ Kg4 3.Ne5+ Kg5 00:00:04
= (0.00) 1.Ng7+ Kg5 2.Nf3+ Kg4 3.Ne5+ Kg5 00:00:05
= (0.00) 1.Ng7+ Kg5 2.Nf3+ Kg4 3.Ne5+ Kg5 00:00:06
= (0.00) 1.Ng7+ Kg5 2.Nf3+ Kg4 3.Ne5+ Kg5 00:00:08
= (0.00) 1.Ng7+ Kg5 2.Nf3+ Kg4 3.Ne5+ Kg5 00:00:12
= (0.00) 1.Ng7+ Kg5 2.Nf3+ Kg4 3.Ne5+ Kg5 00:00:18
Re: Amazing test position!
Posted: Sat Jun 12, 2010 4:54 am
zullil wrote:Stockfish-1.7.1 (8 threads) builds a fortress:Robert Flesher wrote:I will be shocked if any engine can solve this!
what is your evaluation of this position?
Code: Select all
Searching: 8/8/7p/3KNN1k/2p4p/8/3P2p1/8 w - - infinite: 1 ponder: 0 time: 0 increment: 0 moves to go: 0 2 +0.93 00:01 266 Nf3 h3 Kxc4 3 +1.37 00:01 444 Nf3 h3 Ke4 4 -0.28 00:01 1312 Nf3 h3 Ng7+ Kg4 Ke4 4 +0.65 00:01 2230 Ng7+ Kg5 Ne6+ Kf6 Nf3 h3 5 +0.69 00:01 2821 Ng7+ Kg5 Ne6+ Kf6 Nf3 h3 Ng1 6 < +0.28 00:01 6002 Ng7+ Kg5 Ne6+ Kf6 Nf3 h3 Ng1 h2 6 < -0.12 00:01 8347 Ng7+ Kg5 Ne6+ Kf6 Nf3 h3 Ng1 h2 6 +0.44 00:01 10442 Ng7+ Kg5 Nf3+ Kg4 Ke4 h3 Nf5 h5 Nd6 Kg3 Nxc4 7 < +0.15 00:01 15035 Ng7+ Kg5 Nf3+ Kf4 Ng1 Kg4 Kxc4 h3 Kd4 h2 7 < -0.12 00:01 17400 Ng7+ Kg5 Nf3+ Kf4 Ng1 Kg4 Kxc4 h3 Kd4 h2 7 -0.53 00:01 19636 Ng7+ Kg5 Nf3+ Kf4 Ng1 Kg4 Ke4 h3 Nf3 Kg3 Nf5+ Kf2 Nxh6 8 -1.33 00:01 45308 Ng7+ Kg5 Nf3+ Kf4 Ng1 Kg4 Ne6 h3 Nxh3 Kxh3 Nf4+ Kg3 Nxg2 Kxg2 Kxc4 h5 Kd3 h4 Ke4 9 -2.06 00:01 90656 Ng7+ Kg5 Nf3+ Kf4 Ng1 Kg4 Ne6 h3 Nxh3 Kxh3 Nf4+ Kg3 Ne2+ Kf2 Nf4 Kf3 Nh3 Kg3 Ng1 Kf2 Nh3+ Kf1 Kxc4 10 < -3.19 00:01 145038 Ng7+ Kg5 Nf3+ Kf4 Ng1 Kg4 Ne6 h3 Nxh3 Kxh3 Nf4+ Kg3 Ne2+ Kf2 Nf4 Kf3 Nh3 Kg3 Ng1 h5 Kxc4 h4 d4 h3 d5 h2 Ne2+ Kf2 10 -1.90 00:01 163583 Ng3+ hxg3 Nf3 Kg4 Ke4 h5 Ne5+ Kh4 Nf3+ Kh3 Ke3 h4 Kf4 g1=N Nxg1+ Kg2 Ne2 Kf2 Nd4 11 < -2.42 00:01 183403 Ng3+ hxg3 Nf3 Kg4 Ke4 h5 Ne5+ Kh3 Nf3 h4 Kf4 g1=N Nxg1+ Kg2 Ne2 Kf2 Nd4 h3 11 < -2.95 00:01 231835 Ng3+ hxg3 Nf3 Kg4 Ke4 h5 Ne5+ Kh3 Nf3 h4 Kf4 g1=N Nxg1+ Kg2 Ne2 Kf2 Nd4 h3 11 -2.67 00:01 247590 Ng3+ hxg3 Nf3 Kg4 Ke4 h5 Ne5+ Kh3 Nf3 h4 Kf5 g1=N Nxg1+ Kg2 Ne2 Kf1 Nf4 g2 Nh3 Ke1 12 < -3.52 00:01 272106 Ng3+ hxg3 Nf3 Kg4 Ke4 h5 Ne5+ Kh3 Nf3 h4 Kf5 g1=N Nxg1+ Kg2 Ne2 Kf2 Nf4 g2 Nxg2 Kxg2 12 > -1.82 00:01 304259 Ng7+ Kg5 Nf3+ Kf4 Ng1 Kg4 Ne6 h3 Nxh3 Kxh3 Nf4+ Kg3 Ne2+ Kf2 Nf4 Kf3 Nh3 Kg3 Ng1 h5 Kxc4 h4 d4 h3 d5 h2 Ne2+ Kf2 12 -1.98 00:01 328008 Ng7+ Kg5 Nf3+ Kf4 Ng1 Kg4 Ne6 h3 Nxh3 Kxh3 Nf4+ Kg3 Ne2+ Kf2 Nf4 Kf3 Nh3 h5 Kxc4 Kg3 Ng1 h4 d4 h3 d5 h2 Ne2+ Kf2 13 < -3.07 00:01 627522 Ng7+ Kg5 Nf3+ Kg4 Ke4 h3 Nf5 g1=Q Nxg1 h2 Nxh6+ Kh5 13 -2.18 00:01 886707 Ng7+ Kg5 Nf3+ Kg4 Ne5+ Kf4 Nh5+ Kg5 Ng3 hxg3 Nf3+ Kg4 Ke4 h5 Ne5+ Kh3 Nf3 h4 Kf5 g1=N Nxg1+ Kg2 Ne2 Kf2 Nf4 g2 Nxg2 Kxg2 14 < -2.75 00:01 1175k Ng7+ Kg5 Nf3+ Kg4 Ne5+ Kf4 Nh5+ Kg5 Ng3 hxg3 Nf3+ Kg4 Ke4 h5 Ne5+ Kh3 Nf3 h4 Kf5 g1=N Nxg1+ Kg2 Ne2 Kf2 Nf4 g2 Nxg2 Kxg2 14 < -3.31 00:01 1387k Ng7+ Kg5 Nf3+ Kg4 Ne5+ Kf4 Nh5+ Kg5 Ng3 hxg3 Nf3+ Kg4 Ke4 h5 Ne5+ Kh3 Nf3 h4 Kf5 g1=N Nxg1+ Kg2 Ne2 Kf2 Nf4 g2 Nxg2 Kxg2 14 -4.00 00:01 1785k Ng7+ Kg5 Nf3+ Kg4 Ne5+ Kf4 Nh5+ Kg5 Ng3 hxg3 Ke4 g1=N Nf7+ Kg4 Nxh6+ Kh3 Nf5 g2 Nd4 Kg4 Nf5 Nf3 Ne3+ Kg3 Nxg2 Kxg2 Ke3 Kg3 d3 15 -3.88 00:01 2556k Ng7+ Kg5 Nf3+ Kg4 Ne5+ Kf4 Nh5+ Kg5 Ng3 hxg3 Ke4 g1=N Nf7+ Kg4 Nxh6+ Kh3 Nf5 g2 Nd4 Kg4 Nf5 Nf3 Ne3+ Kg3 Nxg2 Kxg2 Ke3 Kg3 d4 Kg4 d5 Ne5 Kd4 Kf5 d6 Ke6 16 -4.32 00:01 5181k Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+ Kh5 Nf3 h1=Q Nf5 Qb1+ Kf4 Qb4 N5d4 Kg6 Ke5 c3 dxc3 Qxc3 Nh4+ Kf7 Nf5 Qc5+ Ke4 Kf6 17 -4.53 00:02 6707k Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+ Kh5 Nf3 h1=Q Nf5 Qb1+ Kf4 Qb4 N5d4 Kg6 Ke5 c3 dxc3 Qxc3 Nh4+ Kf7 Nf5 Qc5+ Kf4 Kf6 Ke4 Qe5+ Kd3 Qd5 18 -4.53 00:02 9769k Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+ Kh5 Nf3 h1=Q Nf5 Qb1+ Kf4 Qb4 Ke5 Kg4 Nh2+ Kh3 Nf3 Kg2 N5d4 Kg3 Ke4 Qb7+ Ke5 Qa8 Kd6 Kf4 Kc5 Qc8+ Kd5 Qg8+ Kc5 Ke4 19 < -4.65 00:02 12902k Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+ Kh5 Nf3 h1=Q Nf5 Qb1+ Kf4 Qb4 Ke5 Kg4 Nh2+ Kh3 Nf3 Kg2 N5d4 Kg3 Ke4 Qb7+ Ke5 Qa8 Kd6 Kf4 Kc5 Qc8+ Kd5 Qg8+ Kc5 Ke4 19 -4.65 00:03 13850k Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+ Kh5 Nf3 h1=Q Nf5 Qb1+ Kf4 Qb4 N5d4 Kg6 Ke3 Qe7+ Kf4 Kf6 Nc6 Qc7+ Nce5 c3 dxc3 Qxc3 Ke4 Qb4+ Kd5 Qb7+ Kd6 Qe4 20 -4.65 00:03 17550k Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+ Kh5 Nf3 h1=Q Nf5 Qb1+ Kf4 Qb4 N5d4 Kg6 Nc6 Qd6+ Nce5+ Kf6 Ke4 Qb4 Kd5 c3 dxc3 Qxc3 Nd7+ Ke7 Nde5 Qa5+ Ke4 Qb4+ Nd4 Kd6 Nc6 Qe1+ Kf4 21 < -4.73 00:04 22827k Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+ Kh5 Nf3 h1=Q Nf5 Qb1+ Kf4 Qb4 N5d4 Kg6 Nc6 Qd6+ Nce5+ Kf6 Ke4 Qb4 Kd5 c3 dxc3 Qxc3 Nd7+ Ke7 Nde5 Qa5+ Ke4 Qb4+ Nd4 Kd6 Nc6 Qe1+ Kf4 Qc1+ Ke4 Qg5 21 -4.77 00:05 28505k Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+ Kh5 Nf3 h1=Q Nf5 Qb1+ Kf4 Qb4 N5d4 Kg6 Nc6 Qd6+ Nce5+ Kf6 Ke4 Qb4 Nc6 Qb1+ Kd5 Qd3+ Ncd4 c3 dxc3 Qxc3 Ke4 Qc5 Ke3 Qa3+ Ke4 Qd6 Kd3 Qa3+ Kc4 Qa6+ Kd5 Qa3 Kc4 22 -4.73 00:05 35999k Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+ Kh5 Nf3 h1=Q Nf5 Qb1+ Kf4 Qb4 N5d4 Kg6 Nc6 Qd6+ Nce5+ Kf6 Ke4 Qb4 Nc6 Qb1+ Kd5 Qd3+ Ncd4 c3 dxc3 Qxc3 Ke4 Qc5 Ke3 Qa3+ Ke4 Qd6 Kd3 Qd5 Ke3 Ke7 23 -4.73 00:07 46222k Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+ Kh5 Nf3 h1=Q Nf5 Qb1+ Kf4 Qb4 N5d4 Kg6 Nc6 Qd6+ Nce5+ Kf6 Ke4 Qb4 Nc6 Qb1+ Kd5 Qd3+ Nfd4 Qxd2 Kxc4 Qc1+ Kd5 Qg5+ Ke4 Qg4+ Kd5 Qg2+ Kc4 Qe4 Kc5 Kg5 Nb4 Kf4 Nd5+ Ke5 24 < -4.81 00:09 66033k Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+ Kh5 Nf3 h1=Q Nf5 Qb1+ Kf4 Qb4 N5d4 Kg6 Ke3 Qe7+ Kf4 Kf6 Nf5 Qc7+ Ke4 c3 dxc3 Qc6+ Kf4 Qxc3 N3d4 Qa5 Ke3 Qe5+ Kd3 Qf4 Ne3 Ke5 Nc4+ Kf6 Ne3 24 -4.81 00:10 70615k Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+ Kh5 Nf3 h1=Q Nf5 Qb1+ Kf4 Qb4 N5d4 Kg6 Ke3 Kf6 Ne5 c3 dxc3 Qxc3+ Nd3 Qc7 Nf3 Qd6 Nd4 Qd5 Nb4 Qd7 Kd3 Ke5 25 -4.81 00:11 82503k Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+ Kh5 Nf3 h1=Q Nf5 Qb1+ Kf4 Qb4 N5d4 Kg6 Ke3 Kf6 Ne5 c3 dxc3 Qxc3+ Nd3 Qc7 Nf3 Qa5 Nd4 Qg5+ Ke4 Qg6+ Ke3 Qg4 Nf3 Qd7 Nd2 Qa7+ Kf4 Qc7+ Ke4 Qc6+ Kd4 Kf5 26 > -4.73 00:13 97704k Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+ Kh5 Nf3 h1=Q Nf5 Qb1+ Kf4 Qb4 N5d4 Kg6 Ke4 Kf6 Kd5 c3 dxc3 Qxc3 Ke4 Qb4 Kd3 Qa3+ Ke4 Qe7+ Kd5 Qf7+ Kc5 Qh5+ Kc4 Qf7+ Kc5 26 -4.73 00:13 99297k Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+ Kh5 Nf3 h1=Q Nf5 Qb1+ Kf4 Qb4 N5d4 Kg6 Ke4 Kf6 Kd5 c3 dxc3 Qxc3 Ke4 Qb4 Kd3 Qa3+ Ke4 Qe7+ Kd5 Qf7+ Kc5 Qc7+ Kd5 Qa5+ Ke4 Qa8+ Ke3 Qd5 Kf4 Qd7 Ke3 Qb7 Kd3 Qd5 Ke3 Ke7 Nd2 Qg5+ Kd3 27 -4.73 00:16 130444k Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+ Kh5 Nf3 h1=Q Nf5 Qb1+ Kf4 Qb4 N5d4 Kg6 Ke4 Kf6 Kd5 c3 dxc3 Qxc3 Ke4 Qb4 Kd3 Qa3+ Ke4 Qe7+ Kd5 Qf7+ Ke4 Qb7+ Kd3 Qb4 Ke4 Qc3 Kd5 Qa5+ Ke4 Qa8+ Ke3 Qd5 Kf4 Ke7 Nf5+ Ke6 Ng5+ Kf6 Ne4+ Ke6 Ng5+ 28 < -4.81 00:21 170271k Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+ Kh5 Nf3 h1=Q Nf5 Qb1+ Kf4 Qb4 N5d4 Kg6 Ke4 Kf6 Kd5 c3 dxc3 Qxc3 Ke4 Qb4 Kd3 Qa3+ Ke4 Qa8+ Ke3 Ke7 Kf4 Kd6 Nf5+ Kc5 Ke3 Qd5 Kf4 Qd3 Ne5 Qd2+ Ke4 Qb4+ Ke3 Kd5 28 -4.81 00:22 179640k Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+ Kh5 Nf3 h1=Q Nf5 Qb1+ Kf4 Qb4 N5d4 Kg6 Ke4 Kf6 Nc6 Qb1+ Kd5 Qb5+ Kd6 Qb3 Nfd4 Qd3 Kd5 Qxd2 Kxc4 Qg5 Kd3 Qg6+ Kc4 Kg5 Kd5 Kf4 Ne6+ Ke3 Ke5 Qg3+ Kd5 Qg2+ Kd6 Qe4 Ne5 Qb4+ Kc6 Ke4 Nc5+ Kxe5 Nd3+ 29 -4.85 00:30 254266k Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+ Kh5 Nf3 h1=Q Nf5 Qb1+ Kf4 Qb4 N5d4 Kg6 Ke4 Kf6 Nc6 Qb1+ Kd5 Qb5+ Kd6 Qb3 Nfd4 Qd3 Kd5 Qxd2 Kxc4 Qg5 Kd3 Qg6+ Kc4 Kg5 Kd5 Kf4 Ne6+ Ke3 Ke5 Qg3+ Kd5 Qg2+ Kd6 Qh2+ Kd5 Qh1+ Kc5 Qe4 Ncd4 Qe5+ Kc4 Ke4 30 -4.85 00:39 333065k Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+ Kh5 Nf3 h1=Q Nf5 Qb1+ Kf4 Qb4 N5d4 Kg6 Ke4 Kf6 Nc6 Qb1+ Kd5 Qb5+ Kd6 Qb3 Nfd4 Qd3 Kd5 Qxd2 Kxc4 Qg5 Kd3 Qg6+ Kc4 Kg5 Kd5 Kf4 Ne6+ Ke3 Ke5 Qg3+ Kd5 Qg2+ Kd6 Qh2+ Kd5 Qh1+ Kc5 Qc1+ Kd5 Qb1 Ne5 Qe4+ Kd6 Qb4+ Kc6 Ke4 Nc5+ Kxe5 Nd3+ 31 < -4.93 00:54 472029k Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+ Kh5 Nf3 h1=Q Nf5 Qb1+ Kf4 Qb4 N5d4 Kg6 Ke4 Kf6 Nc6 Qb3 Nfe5 Qc2+ Ke3 Qc1 Ke2 c3 Ng4+ Kg5 31 -4.93 00:58 504981k Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+ Kh5 Nf3 h1=Q Nf5 Qb1+ Kf4 Qb4 N5d4 Kg6 Ke4 Kf6 Nc6 Qb3 Ncd4 Qb7+ Kf4 Qc7+ Ke3 c3 dxc3 Qxc3+ Ke4 Qb4 Kd3 Qb1+ Ke3 Qg6 Kd2 Qe4 Kc3 Ke7 Kb4 Kd6 Kc4 Qf4 Kd3 Kd5 32 -4.93 01:12 635044k Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+ Kh5 Nf3 h1=Q Nf5 Qb1+ Kf4 Qb4 N5d4 Kg6 Ke4 Kf6 Nc6 Qb3 Ncd4 Qb7+ Kf4 Qc7+ Ke3 Qd6 Ke4 Qc5 Ke3 Qd5 Kf4 Qd7 Ke3 Qe7+ Kf4 Qe8 Kg3 Qe4 Kf2 Qd3 Nc6 Qd6 Ncd4 Qa3 Ke2 Qd3+ Kf2 c3 dxc3 Qxc3 Ke2 Kg6 Nh4+ Kg5 Nhf5 Kf6 33 < -5.01 01:40 900694k Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+ Kh5 Nf3 h1=Q Nf5 33 -5.01 01:53 1014M Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+ Kh5 Nf3 h1=Q Nf5 Kg4 Ne3+ Kg3 Nf5+ Kf2 Nd4 Qh7+ Kd5 Qg8+ Kc5 Qc8+ Kd5 c3 dxc3 Qxc3 Ne5 Qa5+ Kd6 Qa6+ Kd5 Qa8+ Nec6 Qg8+ Ke4 Qg2+ Ke5 Ke3 Nf5+ Kd2 Ncd4 Kd3 Ne6 Qe4+ Kf6 Qb4 Ke5 Qe1+ Kf6 Ke4 Ng5+ Kd5 Ne7+ Kc4 Nf5 Qc3+ Ke6 Kd3 Nd6 Qc5 34 < -5.09 02:16 1228M Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+ Kh5 Nf3 h1=Q Nf5 Kg4 Ne3+ Kg3 Nf5+ Kf2 Nd4 Qh7+ Kd5 Qg8+ Kc5 Qc8+ Kd5 c3 dxc3 Qxc3 Ne5 Qa5+ 34 -5.09 02:23 1284M Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+ Kh5 Nf3 h1=Q Nf5 Kg4 Ne3+ Kg3 Nf5+ Kf2 Nd4 Qh7+ Kd5 Qg8+ Kc5 Qc8+ Kd5 c3 dxc3 Qxc3 Ne5 Qa5+ Kd6 Qa6+ Kd5 Qb7+ Kd6 Qb8+ Kd5 Qd8+ Ke4 Qh4+ Kd5 Qh1+ Ke6 Ke3 Nb3 Qh3+ Kd6 Ke4 Nd2+ Kf4 Ndc4 Qg2 Kc5 Qg1+ Kb4 Ke4 Nd7 Qd4 Nc5+ Kd5 35 < -5.21 03:11 1760M Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q 35 < -5.33 04:00 2224M Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+ Kh5 Nf3 h1=Q Nf5 Kg4 Ne3+ Kg3 Nf5+ Kf2 Nd4 Qb1+ Kd5 Qa2 Kc5 Kg3 Kb5 Kf4 Kb4 Ke4 Kb5 Kd5 35 -5.33 04:13 2345M Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+ Kh5 Nf3 h1=Q Nf5 Kg4 Ne3+ Kg3 Nf5+ Kf2 Nd4 Qb1+ Kd5 Qa2 Kc5 Kg3 Ne5 Qa5+ Nb5 Qxd2 Nxc4 Qf2+ Kb4 Qf5 Nd4 Qd5 Nb5 Kf3 Nbd6 Ke2 Nb5 Qg5 Nbd6 Kd3 Nb6 Qf4+ Kc5 Qd4+ Kc6 Qf6 Nc4 Kd4 Nd2 36 -5.33 05:03 2806M Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+ Kh5 Nf3 h1=Q Nf5 Kg4 Ne3+ Kg3 Nf5+ Kf2 Nd4 Qb1+ Kd5 Qa2 Kc5 Kg3 Ne5 Qa5+ Nb5 Qxd2 Nxc4 Qf2+ Kb4 Qf5 Nd4 Qd5 Nb5 Kf3 Nbd6 Ke2 Nb5 Qg5 Nbd6 Kd3 Nb6 Qf4+ Kc5 Qd4+ Kc6 Qf6 Nc4 Qf4 Nb6 Kd4 Nbc4 Qg4 Nd2 Qf4 Nb3+ Ke5 Nc5 Qf3+ 37 > -5.21 06:18 3573M Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+ Kh5 Nf3 h1=Q Nf5 Kg4 Ne3+ Kg3 Nf5+ Kf2 Nd4 Qb1+ Kd5 Qa2 Kc5 Kg3 Ne5 Qa5+ Nb5 Qxd2 Nxc4 Qf2+ Kd5 Qf5+ Kc6 Qc8+ Kd5 Qg8+ Kc5 Qg5+ Kc6 Kf3 Nbd6 37 -5.21 06:20 3588M Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+ Kh5 Nf3 h1=Q Nf5 Kg4 Ne3+ Kg3 Nf5+ Kf2 Nd4 Qb1+ Kd5 Qa2 Kc5 Kg3 Ne5 Qa5+ Nb5 Qxd2 Nxc4 Qf2+ Kd5 Qf5+ Kc6 Qf3+ Kc5 Qh5+ Kb4 Qf5 Nd4 Qd5 Nb5 Kf4 Nbd6 Qh5 Nb5 Qf5 Nc3 Qf8+ Kb5 Qh8 Ne2+ Kf3 Nc1 Qh5+ Kc6 Kf4 Nd3+ Ke4 Nc5+ Kd4 38 > -5.09 06:45 3825M Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 38 < -5.33 07:59 4579M Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+ Kh5 Nf3 h1=Q Nf5 Kg4 Ne3+ Kg3 Nf5+ Kf2 Nd4 Qb1+ Kd5 Qa2 Kc5 Kg3 Ne5 Qa5+ Nb5 Qxd2 Kxc4 Qf4+ Kd5 Qf1 Nc3 Kf4 Ng6+ Kf5 Ne7+ Kf6 Ng8+ Kg7 38 -5.17 09:37 5519M Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+ Kh5 Nf3 h1=Q Nf5 Kg4 Ne3+ Kg3 Nf5+ Kf2 Nd4 Qb1+ Kd5 Qa2 Kc5 Kg3 Ne5 Qxd2 Nxc4 Qg5+ Kc6 Qg8 Nf5+ Kf3 Nfd6 Qa8+ Kc5 Kf4 Nb5 Qc8+ Kb4 Qg8 Nbd6 Qg5 Kb3 Qc5 Kc3 Qd5 Kb4 Qc6 Nb5 Qh6 Kc5 Qh5+ Kb4 Qg4 Kc3 Qh3+ Kd4 39 < -5.29 10:57 6285M Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q 39 < -5.41 13:42 7897M Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q 39 -5.41 15:37 8985M Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+ Kh5 Nf3 h1=Q Nf5 Kg4 Ne3+ Kg3 Nf5+ Kf2 Nd4 Qb1+ Kd5 Qa2 Kc5 Kg3 Ne5 Qxd2 Nxc4 Qg5+ Kd6 Qg8 Ne6 Kf3 Ne5+ Ke4 Nc5+ Kf5 Ned3 Qg2 Nb4 Qg6+ Kd5 Qg8+ Kd4 Qg4+ Kc3 Ke5 Ncd3+ Kd6 Kd2 Qg7 Kc2 Ke6 Nc5+ Ke5 Kc3 Qg1 Ncd3+ Ke4 Nc2 Qg7+ Kd2 Qd7 Nb4 Qd4 Kd1 Qc3 Ke2 Qc8 Kd2 Qd7 Ke2 Qg4+ 40 -5.45 22:41 13174M Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q Nxg1 h2 Nxh6+ Kh5 Nf3 h1=Q Nf5 Kg4 Ne3+ Kg3 Nf5+ Kf2 Nd4 Qb1+ Kd5 Qa2 Kc5 Kg3 Ne5 Qxd2 Nxc4 Qg5+ Kd6 Qg8 Ne6 Kf3 Ne5+ Ke4 Nc5+ Kf5 Ned3 Qg2 Nb4 Qg6+ Kd5 Qg8+ Kd4 Qg4+ Kc3 Ke5 Ncd3+ Kd6 Kd2 Qg7 Kc2 Ke6 Nc5+ Ke5 Kc3 Qg1 Ncd3+ Ke4 Nc2 Qg7+ Kd2 Qg5+ Kc3 Qf6+ Kd2 Qd6 Nb4 Qd4 Kc2 Qh8 Kd2 Qh2+ Kc3 Qc7+ Kd2 Qc4 Nf2+ Kd4 Nc2+ Ke5 Ne3 Qb4+ Ke2 Qb5+ Kf3 Qc6+ Ke2 41 < -5.62 32:25 19037M Ng7+ Kg5 Nf3+ Kg4 Nf5 h3 Ke4 g1=Q 41 -5.41 40:38 24067M Kc6 g1=Q Nxh4 Qb1 Nhf3 Qb4 Kd5 c3 dxc3 Qxc3 Kd6 Qa3+ Kd5 Qb3+ Ke4 Qc2+ Kd5 Qc1 Ke4 Qb1+ Kd5 Qb5+ Kd4 Qb2+ Kd5 Qb1 Kd4 Qb7 Ke3 Qb4 Kd3 Qa4 Ke3 Qa2 Ke4 Qb3 Kd4 Qb4+ Ke3 Qc5+ Ke4 Qc2+ 42 -5.41 42:41 25350M Kc6 g1=Q Nxh4 Qb1 Nhf3 Qb4 Kd5 c3 dxc3 Qxc3 Kd6 Qa3+ Kd5 Qb3+ Ke4 Qc2+ Kd5 Qc1 Ke4 Qb1+ Kd5 Qb5+ Kd4 Qb2+ Kd5 Qb1 Kd4 Qb5 Ke4 Qe2+ Kf4 Qa6 Ke4 Qb7+ Kd4 Qb4+ Kd5 Qb6 Ke4 Qb3 Kd4 Qb7 Kc5 43 < -5.49 45:47 27228M Kc6 g1=Q Nxh4 Qb1 Nhf3 Qc1 Kc5 c3 dxc3 Qxc3+ Kd6 Qa3+ Kd5 Qc1 Nd4 Kg5 Ndf3+ Kf6 Nd7+ Kf5 Nd4+ Kg5 Ne6+ Kg6 Ne5+ Kf6 Ng4+ Kf5 Nf2 Qb1 43 < -5.58 56:00 33482M Kc6 g1=Q Nxh4 Qb1 Nhf3 Qc1 Kd6 c3 dxc3 Qxc3 Kd5 Qa5+ Ke6 Qa2+ 43 -5.41 1:07:17 40406M Kc6 g1=Q Nxh4 Qc1 Nhf3 Qa3 Kd5 Qa4 Kc5 Qa2 Kc6 Qb3 Kc5 c3 dxc3 Qxc3+ Kd5 Qb3+ Ke4 Qb4+ Kd5 Qb6 Ke4 Qb7+ Kd4 Qb1 Kc5 Qb3 Kd4 Qd1+ Ke4 Qe2+ Kd5 Qb5+ Kd4 Qa4+ Kd5 Qb4 Ke6 Qb3+ Kf5 Qb1+ Kf4 Qb4+ Kf5 Qc3 Ke4 Qc1 Kd5 Qc2 Kd4 Qc7 Ke4 Qd6 Nd4 Qc5 Ndf3 44 -5.41 1:12:56 43954M Kc6 g1=Q Nxh4 Qc1 Nhf3 Qa3 Kd5 Qa4 Kc5 Qa2 Kc6 Qb3 Kd6 c3 dxc3 Qxc3 Kd5 Qb3+ Ke4 Qb4+ Kd5 Qa5+ Kd4 Qb6+ Kd5 Qb5+ Kd4 Qa4+ Kd5 Qb4 Ke6 Qb3+ Kf5 Qb1+ Kf4 Qb4+ Kf5 Qc3 Ke4 Qc1 Kd5 Qc2 Kd4 Qd1+ Ke4 Qe2+ Kd4 Qc2 Kd5 Qc1 Ke4 Qd1 Kf5 Qc2+ Ke6 Qe4 Kd6 Qf5 Kd5 Qf4 Kd6 Qf5 45 > -5.33 1:33:01 56462M Kc6 g1=Q Nxh4 Qc1 Nhf3 c3 dxc3 Qxc3+ Kd5 Qb3+ Ke4 Qb4+ Kd5 Qb7+ Kd6 Qe4 Kc5 Qe3+ Kd5 Qf4 Kd6 45 -5.37 1:37:08 58966M Kc6 g1=Q Nxh4 Qc1 Nhf3 c3 dxc3 Qxc3+ Kd5 Qb3+ Ke4 Qb4+ Kd5 Qb7+ Kd6 Qe4 Kc5 Qe3+ Kd5 Qf4 Kd6 Qc1 Kd5 Qd1+ Ke6 Qd8 Kf5 Qd5 Kf4 Qd1 Kf5 Qc2+ Ke6 Qb1 Kd5 Qb4 Ke6 Qb6+ Kd5 Qb5+ Ke4 Qb7+ Kd4 Qg7 Ke4 Qf6 Ke3 Qd6 Ke4 Qc5 Kd3 Qb4 Ke3 Qa4 Nd4 Qa3+ Ke4 Qa8+ Kf4 Qa6 Ndf3 Qa4+ Ke3 Qb4 Nodes: 67260547651 Nodes/second: 10159364 Best move: Kc6 Ponder move: g1=Q
Correct move, too bad Stockfish does not see the draw and understand the fortress!
Re: Amazing test position!
Posted: Sat Jun 12, 2010 4:57 am
John Blake wrote:On my dual core laptop, Naum 4 is the only engine to find a draw (within 10 minutes).
Code: Select all
New game 8/8/7p/3KNN1k/2p4p/8/3P2p1/8 w - - 0 1 Analysis by Naum 4: +- (3.66) 1.Nf3 Kg4 2.Kxc4 Kxf5 3.Kc5 Ke4 00:00:00 +- (4.00) 1.Nf3 Kg4 2.Ke4 h3 3.Nxh6+ Kg3 4.Ke3 00:00:00 +- (2.19) 1.Ng7+ Kg5 2.Nf3+ Kg4 3.Ke4 Kg3 4.Nf5+ Kf2 00:00:00 +- (3.59) 1.Ng7+ Kg5 2.Nf3+ Kg4 3.Ke4 Kg3 4.Nf5+ Kf2 5.N5xh4 00:00:00 +/= (0.32) 1.Ng7+ Kg5 2.Nf3+ Kg4 3.Ke4 h3 4.Nf5 h5 5.Nh2+ Kg5 00:00:00 +/= (0.32) 1.Ng7+ Kg5 2.Nf3+ Kg4 3.Ke4 h3 4.Nf5 h5 5.Nh2+ Kg5 6.Nd4 00:00:00 = (0.00) 1.Ng7+ Kg5 2.Nf3+ Kg4 3.Nh2+ Kg3 4.Nf5+ Kxh2 5.Nxh4 h5 6.Kxc4 Kg3 00:00:01 = (0.00) 1.Ng7+ Kg5 2.Nf3+ Kg4 3.Nh2+ Kg3 4.Nf5+ Kxh2 5.Nxh4 h5 6.Kxc4 Kg3 7.Nxg2 00:00:01 +/- (0.80) 1.Ng3+ hxg3 2.Nf3 Kg4 3.Ng1 Kf5 4.Kxc4 Ke6 5.Kd4 h5 6.Ke4 h4 7.Kf3 00:00:02 +/- (1.13) 1.Ng3+ hxg3 2.Nf3 Kg4 3.Ng1 Kf5 4.Kxc4 Ke6 5.Kd4 h5 6.Ke4 h4 7.Nh3 Kf6 00:00:02 = (0.00) 1.Ng7+ Kg5 2.Nf3+ Kg4 3.Ne5+ Kg5 00:00:04 = (0.00) 1.Ng7+ Kg5 2.Nf3+ Kg4 3.Ne5+ Kg5 00:00:05 = (0.00) 1.Ng7+ Kg5 2.Nf3+ Kg4 3.Ne5+ Kg5 00:00:06 = (0.00) 1.Ng7+ Kg5 2.Nf3+ Kg4 3.Ne5+ Kg5 00:00:08 = (0.00) 1.Ng7+ Kg5 2.Nf3+ Kg4 3.Ne5+ Kg5 00:00:12 = (0.00) 1.Ng7+ Kg5 2.Nf3+ Kg4 3.Ne5+ Kg5 00:00:18
This is being looked at by a few at talkchess, but ng7+ appears to lose as well.
Re: Amazing test position!
Posted: Sat Jun 12, 2010 6:28 am
What do you mean by "understand"? What do you mean by "see the draw"?Robert Flesher wrote:zullil wrote:Stockfish-1.7.1 (8 threads) builds a fortress:Robert Flesher wrote:I will be shocked if any engine can solve this!
what is your evaluation of this position?
Code: Select all
Searching: 8/8/7p/3KNN1k/2p4p/8/3P2p1/8 w - - infinite: 1 ponder: 0 time: 0 increment: 0 moves to go: 0 45 -5.37 1:37:08 58966M Kc6 g1=Q Nxh4 Qc1 Nhf3 c3 dxc3 Qxc3+ Kd5 Qb3+ Ke4 Qb4+ Kd5 Qb7+ Kd6 Qe4 Kc5 Qe3+ Kd5 Qf4 Kd6 Qc1 Kd5 Qd1+ Ke6 Qd8 Kf5 Qd5 Kf4 Qd1 Kf5 Qc2+ Ke6 Qb1 Kd5 Qb4 Ke6 Qb6+ Kd5 Qb5+ Ke4 Qb7+ Kd4 Qg7 Ke4 Qf6 Ke3 Qd6 Ke4 Qc5 Kd3 Qb4 Ke3 Qa4 Nd4 Qa3+ Ke4 Qa8+ Kf4 Qa6 Ndf3 Qa4+ Ke3 Qb4 Nodes: 67260547651 Nodes/second: 10159364 Best move: Kc6 Ponder move: g1=Q
Correct move, too bad Stockfish does not see the draw and understand the fortress!
Stockfish has correctly solved the problem, and has done so without using tablebases or special knowledge of fortresses. I find that rather amazing!
Re: Amazing test position!
Posted: Sat Jun 12, 2010 9:53 am
I get this error after entering this thread:
Invalid FEN [14]: char 34 missing halfmove clock
Invalid FEN [14]: char 34 missing halfmove clock
Re: Amazing test position!
Posted: Sat Jun 12, 2010 9:56 am
Fixed. The original FEN was broken.Ovyron wrote:I get this error after entering this thread:
Invalid FEN [14]: char 34 missing halfmove clock
Jeremy
Re: Amazing test position!
Posted: Sat Jun 12, 2010 12:20 pm
Yes, thats true, after letting the computer think for a lot longer.Robert Flesher wrote:John Blake wrote:On my dual core laptop, Naum 4 is the only engine to find a draw (within 10 minutes).
Code: Select all
New game 8/8/7p/3KNN1k/2p4p/8/3P2p1/8 w - - 0 1 Analysis by Naum 4: +- (3.66) 1.Nf3 Kg4 2.Kxc4 Kxf5 3.Kc5 Ke4 00:00:00 +- (4.00) 1.Nf3 Kg4 2.Ke4 h3 3.Nxh6+ Kg3 4.Ke3 00:00:00 +- (2.19) 1.Ng7+ Kg5 2.Nf3+ Kg4 3.Ke4 Kg3 4.Nf5+ Kf2 00:00:00 +- (3.59) 1.Ng7+ Kg5 2.Nf3+ Kg4 3.Ke4 Kg3 4.Nf5+ Kf2 5.N5xh4 00:00:00 +/= (0.32) 1.Ng7+ Kg5 2.Nf3+ Kg4 3.Ke4 h3 4.Nf5 h5 5.Nh2+ Kg5 00:00:00 +/= (0.32) 1.Ng7+ Kg5 2.Nf3+ Kg4 3.Ke4 h3 4.Nf5 h5 5.Nh2+ Kg5 6.Nd4 00:00:00 = (0.00) 1.Ng7+ Kg5 2.Nf3+ Kg4 3.Nh2+ Kg3 4.Nf5+ Kxh2 5.Nxh4 h5 6.Kxc4 Kg3 00:00:01 = (0.00) 1.Ng7+ Kg5 2.Nf3+ Kg4 3.Nh2+ Kg3 4.Nf5+ Kxh2 5.Nxh4 h5 6.Kxc4 Kg3 7.Nxg2 00:00:01 +/- (0.80) 1.Ng3+ hxg3 2.Nf3 Kg4 3.Ng1 Kf5 4.Kxc4 Ke6 5.Kd4 h5 6.Ke4 h4 7.Kf3 00:00:02 +/- (1.13) 1.Ng3+ hxg3 2.Nf3 Kg4 3.Ng1 Kf5 4.Kxc4 Ke6 5.Kd4 h5 6.Ke4 h4 7.Nh3 Kf6 00:00:02 = (0.00) 1.Ng7+ Kg5 2.Nf3+ Kg4 3.Ne5+ Kg5 00:00:04 = (0.00) 1.Ng7+ Kg5 2.Nf3+ Kg4 3.Ne5+ Kg5 00:00:05 = (0.00) 1.Ng7+ Kg5 2.Nf3+ Kg4 3.Ne5+ Kg5 00:00:06 = (0.00) 1.Ng7+ Kg5 2.Nf3+ Kg4 3.Ne5+ Kg5 00:00:08 = (0.00) 1.Ng7+ Kg5 2.Nf3+ Kg4 3.Ne5+ Kg5 00:00:12 = (0.00) 1.Ng7+ Kg5 2.Nf3+ Kg4 3.Ne5+ Kg5 00:00:18
This is being looked at by a few at talkchess, but ng7+ appears to lose as well.
Thanks Robert