This is a win for white in 27 moves but can you prevent your engine from forcing a draw?
I think you will find that this one is much harder to solve than it looks.
Simple endgame?
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Jack Lad
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Simple endgame?
[d] 8/6pp/8/8/8/6P1/1k2K2P/8 w - - 0 1
This is a win for white in 27 moves but can you prevent your engine from forcing a draw?
I think you will find that this one is much harder to solve than it looks.
This is a win for white in 27 moves but can you prevent your engine from forcing a draw?
I think you will find that this one is much harder to solve than it looks.
Now cracks a noble heart.—Good night, sweet Princess, And flights of angels sing thee to thy rest!
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Terry McCracken
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Re: Simple endgame?
Hiarcs 11.2 finds it. The key is Kd2! Kd3? only draws.Jack Lad wrote:[d] 8/6pp/8/8/8/6P1/1k2K2P/8 w - - 0 1
This is a win for white in 27 moves but can you prevent your engine from forcing a draw?
I think you will find that this one is much harder to solve than it looks.
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Dariusz Orzechowski
Re: Simple endgame?
Glaurung 2.0.1 immediately finds Kd2 with a large + score.
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Jack Lad
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Re: Simple endgame?
Indeed Kd2! is the only winning move here and after black plays Kb3! then Kd3! is now the only winning move but I wonder if anyone can force the win against an engine without resorting to using EGTBs?Terry McCracken wrote:Hiarcs 11.2 finds it. The key is Kd2! Kd3? only draws.
Now cracks a noble heart.—Good night, sweet Princess, And flights of angels sing thee to thy rest!
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Jack Lad
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Re: Simple endgame?
[d] 4k3/5p1p/1p5P/6P1/P7/8/8/4K3 w - - 0 1
[d] 8/6pp/8/8/8/2k5/6P1/1K2N3 w - - 0 1
These positions are also won for white but can your engine stop you?
[d] 8/6pp/8/8/8/2k5/6P1/1K2N3 w - - 0 1
These positions are also won for white but can your engine stop you?
Last edited by Jack Lad on Wed Nov 28, 2007 12:28 am, edited 1 time in total.
Now cracks a noble heart.—Good night, sweet Princess, And flights of angels sing thee to thy rest!
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PauloSoare
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Re: Simple endgame?
Look at the sites:
http://www.shredderchess.com/online-che ... abase.html
http://chessok.com/?page_id=88
They solve at a maximum of 6 pieces, and booth found that
Kd2 it´s the only move that wins and it´s a mate in 27.
Paulo Soares
http://www.shredderchess.com/online-che ... abase.html
http://chessok.com/?page_id=88
They solve at a maximum of 6 pieces, and booth found that
Kd2 it´s the only move that wins and it´s a mate in 27.
Paulo Soares
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Jack Lad
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Re: Simple endgame?
Sure but I was wondering if a human could beat an engine without referring to EGTBs.
Anyway an EGTB won't help you solve this one straight away.
[d] 4k3/5p1p/1p5P/6P1/P7/8/8/4K3 w - - 0 1
Anyway an EGTB won't help you solve this one straight away.
[d] 4k3/5p1p/1p5P/6P1/P7/8/8/4K3 w - - 0 1
Now cracks a noble heart.—Good night, sweet Princess, And flights of angels sing thee to thy rest!
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PauloSoare
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Re: Simple endgame?
Mc, Deep Shredder 11 Q6600, 4 threads, 1.5 Gb HT 
Waiting for engine Deep Shredder 11 x64 [0]...
1/02 0:00 -3.20 1.g6 fxg6 (5) 0
1/02 0:00 +0.79 1.Ke2 Kd7 2.Ke3 Ke7 3.Kd3 (4.431) 12
2/02 0:00 +0.79 1.Ke2 Kd7 2.Ke3 Ke7 3.Kd3 (54.261) 144 SB:95
3/03 0:00 +0.79 1.Ke2 Kd7 2.Ke3 Ke7 3.Kd3 (109.186) 279 SB:451
4/04 0:00 +0.79 1.Ke2 Kd7 2.Ke3 Ke7 3.Kd3 (164.934) 406 SB:1.141
5/05 0:00 +0.79 1.Ke2 Kd7 2.Ke3 Ke7 3.Kd3 (239.128) 566 SB:1.656
6/06 0:00 +0.79 1.Ke2 Kd7 2.Ke3 Ke7 3.Kd3 (281.867) 645 SB:3.350
7/07 0:00 +0.79 1.Ke2 Kd7 2.Ke3 Ke7 3.Kd3 (329.116) 726 SB:4.486
8/10 0:00 +1.05 1.Ke2 Kd7 (364.426) 707 TB:26 SB:4.686
9/09 0:00 +1.05 1.Ke2 Kd7 (364.433) 686 TB:26 SB:4.686
10/10 0:00 +1.05 1.Ke2 Kd7 (364.979) 667 TB:30 SB:4.689
11/11 0:00 +1.05 1.Ke2 Kd7 (365.017) 649 TB:33 SB:4.689
12/12 0:00 +1.05 1.Ke2 Kd7 (365.475) 632 TB:35 SB:4.689
13/13 0:00 +1.05 1.Ke2 Kd7 (365.576) 615 TB:38 SB:4.689
14/14 0:00 +1.05 1.Ke2 Kd7 (365.583) 600 TB:38 SB:4.689
15/31 0:20 +0.81 1.Ke2 Kd7 (1.602.097) 77 TB:7.111 SB:26.183
16/21 0:25 +0.79 1.Ke2 Kd8 2.Kf3 (1.726.674) 69 TB:9.338 SB:27.379
16/33 0:29 +4.86 1.Kd2 Kd7 2.Kd3 Kc7 3.Ke3 Kc6 4.Ke4 Kd6 (4.071.244) 138 TB:14.686 SB:98.439
17/20 0:29 +4.86 1.Kd2 Kd7 2.Kd3 Kc7 3.Ke3 Kc6 4.Ke4 Kd6 (4.220.858) 142 TB:14.965 SB:102.772
18/34 0:30 +5.76 1.Kd2 Kd7 2.Kd3 Kc7 3.Ke3 Kc6 4.Ke4 (4.749.620) 154 TB:16.649 SB:115.767
19/20 0:32 +5.76 1.Kd2 Kd7 2.Kd3 Kc7 3.Ke3 Kc6 4.Ke4 (4.893.658) 150 TB:18.475 SB:117.477
20/26 0:36 +6.01 1.Kd2 Kd7 (5.355.899) 147 TB:21.849 SB:122.566
21/38 0:38 +8.12 1.Kd2 Kd7 2.Kd3 Kc7 3.Ke3 Kc6 4.Ke4 (7.257.181) 189 TB:26.504 SB:158.688
22/35 0:40 +8.87 1.Kd2 Kd7 2.Kd3 Kc7 3.Ke3 Kc6 4.Ke4 (11.878.866) 295 TB:31.981 SB:185.418
23/35 0:42 +12.70 1.Kd2 Kd7 2.Kd3 Kc7 3.Ke3 Kc6 4.Ke4 (20.320.430) 474 TB:44.251 SB:288.573
24/37 0:43 +12.70 1.Kd2 Kd7 2.Kd3 Kc7 3.Ke3 Kc6 4.Ke4 (21.004.423) 483 TB:46.816 SB:301.715
25/43 0:45 +12.95 1.Kd2 Kd7 (24.957.036) 554 TB:52.745 SB:359.280
26/46 0:50 +279.64 1.Kd2 Kd7 2.Kd3 Kc7 3.Ke3 Kc6 4.Ke4 (44.239.573) 868 TB:69.434 SB:688.385
27/38 0:51 +279.64 1.Kd2 Kd7 2.Kd3 Kc7 3.Ke3 Kc6 4.Ke4 (45.322.279) 883 TB:71.949 SB:755.005
28/44 0:54 +279.65 1.Kd2 Kd7 2.Kd3 Kc7 3.Ke3 Kc6 4.Ke4 (46.857.373) 857 TB:75.387 SB:816.853
29/46 0:55 +279.66 1.Kd2 Kd7 2.Kd3 Kc7 3.Ke3 Kc6 4.Ke4 (49.949.302) 901 TB:77.174 SB:917.316
30/48 0:57 +279.67 1.Kd2 Kd7 2.Kd3 Kc7 3.Ke3 Kc6 4.Ke4 (53.012.975) 927 TB:80.144 SB:1.028.425
31/48 0:58 +279.67 1.Kd2 Kd7 2.Kd3 Kc7 3.Ke3 Kc6 4.Ke4 (56.596.596) 967 TB:83.060 SB:1.189.135
32/57 1:20 +279.68 1.Kd2 Kd7 2.Kd3 Kc7 3.Ke3 Kc6 4.Ke4 Kd6 5.Kf5 Ke7 6.Ke5 (188.344.751) 2346 TB:84.689 SB:2.558.698
33/46 1:21 +279.68 1.Kd2 Kd7 2.Kd3 Kc7 3.Ke3 Kc6 4.Ke4 (193.453.046) 2374 TB:85.023 SB:2.804.764
Waiting for engine Deep Shredder 11 x64 [0]...
1/02 0:00 -3.20 1.g6 fxg6 (5) 0
1/02 0:00 +0.79 1.Ke2 Kd7 2.Ke3 Ke7 3.Kd3 (4.431) 12
2/02 0:00 +0.79 1.Ke2 Kd7 2.Ke3 Ke7 3.Kd3 (54.261) 144 SB:95
3/03 0:00 +0.79 1.Ke2 Kd7 2.Ke3 Ke7 3.Kd3 (109.186) 279 SB:451
4/04 0:00 +0.79 1.Ke2 Kd7 2.Ke3 Ke7 3.Kd3 (164.934) 406 SB:1.141
5/05 0:00 +0.79 1.Ke2 Kd7 2.Ke3 Ke7 3.Kd3 (239.128) 566 SB:1.656
6/06 0:00 +0.79 1.Ke2 Kd7 2.Ke3 Ke7 3.Kd3 (281.867) 645 SB:3.350
7/07 0:00 +0.79 1.Ke2 Kd7 2.Ke3 Ke7 3.Kd3 (329.116) 726 SB:4.486
8/10 0:00 +1.05 1.Ke2 Kd7 (364.426) 707 TB:26 SB:4.686
9/09 0:00 +1.05 1.Ke2 Kd7 (364.433) 686 TB:26 SB:4.686
10/10 0:00 +1.05 1.Ke2 Kd7 (364.979) 667 TB:30 SB:4.689
11/11 0:00 +1.05 1.Ke2 Kd7 (365.017) 649 TB:33 SB:4.689
12/12 0:00 +1.05 1.Ke2 Kd7 (365.475) 632 TB:35 SB:4.689
13/13 0:00 +1.05 1.Ke2 Kd7 (365.576) 615 TB:38 SB:4.689
14/14 0:00 +1.05 1.Ke2 Kd7 (365.583) 600 TB:38 SB:4.689
15/31 0:20 +0.81 1.Ke2 Kd7 (1.602.097) 77 TB:7.111 SB:26.183
16/21 0:25 +0.79 1.Ke2 Kd8 2.Kf3 (1.726.674) 69 TB:9.338 SB:27.379
16/33 0:29 +4.86 1.Kd2 Kd7 2.Kd3 Kc7 3.Ke3 Kc6 4.Ke4 Kd6 (4.071.244) 138 TB:14.686 SB:98.439
17/20 0:29 +4.86 1.Kd2 Kd7 2.Kd3 Kc7 3.Ke3 Kc6 4.Ke4 Kd6 (4.220.858) 142 TB:14.965 SB:102.772
18/34 0:30 +5.76 1.Kd2 Kd7 2.Kd3 Kc7 3.Ke3 Kc6 4.Ke4 (4.749.620) 154 TB:16.649 SB:115.767
19/20 0:32 +5.76 1.Kd2 Kd7 2.Kd3 Kc7 3.Ke3 Kc6 4.Ke4 (4.893.658) 150 TB:18.475 SB:117.477
20/26 0:36 +6.01 1.Kd2 Kd7 (5.355.899) 147 TB:21.849 SB:122.566
21/38 0:38 +8.12 1.Kd2 Kd7 2.Kd3 Kc7 3.Ke3 Kc6 4.Ke4 (7.257.181) 189 TB:26.504 SB:158.688
22/35 0:40 +8.87 1.Kd2 Kd7 2.Kd3 Kc7 3.Ke3 Kc6 4.Ke4 (11.878.866) 295 TB:31.981 SB:185.418
23/35 0:42 +12.70 1.Kd2 Kd7 2.Kd3 Kc7 3.Ke3 Kc6 4.Ke4 (20.320.430) 474 TB:44.251 SB:288.573
24/37 0:43 +12.70 1.Kd2 Kd7 2.Kd3 Kc7 3.Ke3 Kc6 4.Ke4 (21.004.423) 483 TB:46.816 SB:301.715
25/43 0:45 +12.95 1.Kd2 Kd7 (24.957.036) 554 TB:52.745 SB:359.280
26/46 0:50 +279.64 1.Kd2 Kd7 2.Kd3 Kc7 3.Ke3 Kc6 4.Ke4 (44.239.573) 868 TB:69.434 SB:688.385
27/38 0:51 +279.64 1.Kd2 Kd7 2.Kd3 Kc7 3.Ke3 Kc6 4.Ke4 (45.322.279) 883 TB:71.949 SB:755.005
28/44 0:54 +279.65 1.Kd2 Kd7 2.Kd3 Kc7 3.Ke3 Kc6 4.Ke4 (46.857.373) 857 TB:75.387 SB:816.853
29/46 0:55 +279.66 1.Kd2 Kd7 2.Kd3 Kc7 3.Ke3 Kc6 4.Ke4 (49.949.302) 901 TB:77.174 SB:917.316
30/48 0:57 +279.67 1.Kd2 Kd7 2.Kd3 Kc7 3.Ke3 Kc6 4.Ke4 (53.012.975) 927 TB:80.144 SB:1.028.425
31/48 0:58 +279.67 1.Kd2 Kd7 2.Kd3 Kc7 3.Ke3 Kc6 4.Ke4 (56.596.596) 967 TB:83.060 SB:1.189.135
32/57 1:20 +279.68 1.Kd2 Kd7 2.Kd3 Kc7 3.Ke3 Kc6 4.Ke4 Kd6 5.Kf5 Ke7 6.Ke5 (188.344.751) 2346 TB:84.689 SB:2.558.698
33/46 1:21 +279.68 1.Kd2 Kd7 2.Kd3 Kc7 3.Ke3 Kc6 4.Ke4 (193.453.046) 2374 TB:85.023 SB:2.804.764
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Terry McCracken
- Posts: 16465
- Joined: Wed Aug 01, 2007 4:16 am
- Location: Canada
Re: Simple endgame?
Of course....always keep opposition.Jack Lad wrote:Indeed Kd2! is the only winning move here and after black plays Kb3! then Kd3! is now the only winning move but I wonder if anyone can force the win against an engine without resorting to using EGTBs?Terry McCracken wrote:Hiarcs 11.2 finds it. The key is Kd2! Kd3? only draws.