Author: Richard Pijl
Date: 03:02:12 12/21/04
Go up one level in this thread
On December 20, 2004 at 04:53:42, Peter McKenzie wrote:
>[D]8/p7/7p/4k1p/6PP/P3K3/8/8 w - -
>
>White to play and draw.
>
>I saw this one in Informator 45 (1988).
>1.a4 gxh4 2.a5! is the drawing line given.
>
>Warp doesn't get it but maybe other programs do. Tablebases could be a big help
>here.
The Baron with 5-men tablebases (Xeon 2.8):
12(15)& 0:00.55 66455 -0.41 h4xg5 h6xg5 Ke3-f3 Ke5-d4 Kf3-g3
Kd4-e4 a3-a4 a7-a5 Kg3-g2 Ke4-f4 Kg2-h3
Kf4-f3
12(18). 0:01.50 105576 -0.41 h4xg5 h6xg5 Ke3-f3 Ke5-d4 Kf3-g3
Kd4-e4 a3-a4 a7-a5 Kg3-g2 Ke4-f4 Kg2-h3
Kf4-f3
13(15)& 0:01.74 123309 -MATE28 h4xg5 h6xg5 Ke3-f3 Ke5-d4 a3-a4
a7-a5 Kf3-f2 Kd4-e4 Kf2-g3 Ke4-e3 Kg3-g2
Ke3-f4 (Kg2-h3) (Kf4-f3)
13(22)& 0:06.78 577559 -2.04 a3-a4 g5xh4 a4-a5 Ke5-f6 a5-a6
Kf6-e6 Ke3-f3 Ke6-d5 Kf3-g2 Kd5-c4 Kg2-h3
Kc4-b5 Kh3xh4 (Kb5xa6)
13(22). 0:06.92 600379 -2.04 a3-a4 g5xh4 a4-a5 Ke5-f6 a5-a6
Kf6-e6 Ke3-f3 Ke6-d5 Kf3-g2 Kd5-c4 Kg2-h3
Kc4-b5 Kh3xh4 (Kb5xa6)
14(20)& 0:07.92 728590 -2.04 a3-a4 g5xh4 a4-a5 Ke5-f6 a5-a6
Kf6-e6 Ke3-f3 Ke6-d5 Kf3-g2 Kd5-c4 Kg2-h3
Kc4-b5 Kh3xh4 Kb5xa6
14(20). 0:08.28 782176 -2.04 a3-a4 g5xh4 a4-a5 Ke5-f6 a5-a6
Kf6-e6 Ke3-f3 Ke6-d5 Kf3-g2 Kd5-c4 Kg2-h3
Kc4-b5 Kh3xh4 Kb5xa6
15(23)& 0:09.55 1006608 -2.01 a3-a4 g5xh4 a4-a5 Ke5-f6 a5-a6
Kf6-e6 Ke3-f2 Ke6-f7 Kf2-e3 (Kf7-g6)
(Ke3-e2)
(Kg6-g7) (Ke2-f3) (Kg7-f6) (Kf3-e3) <rep>
15(23). 0:09.88 1049584 -2.01 a3-a4 g5xh4 a4-a5 Ke5-f6 a5-a6
Kf6-e6 Ke3-f2 Ke6-f7 Kf2-e3 (Kf7-g6)
(Ke3-e2)
(Kg6-g7) (Ke2-f3) (Kg7-f6) (Kf3-e3) <rep>
16(24)& 0:12.36 1438453 -2.01 a3-a4 g5xh4 a4-a5 Ke5-f6 a5-a6
Kf6-e7 Ke3-f3 Ke7-f7 (Kf3-e3) (Kf7-g6)
(Ke3-e2)
(Kg6-g7) (Ke2-f2) (Kg7-g6) (Kf2-e2) <rep>
16(24). 0:12.91 1505245 -2.01 a3-a4 g5xh4 a4-a5 Ke5-f6 a5-a6
Kf6-e7 Ke3-f3 Ke7-f7 (Kf3-e3) (Kf7-g6)
(Ke3-e2)
(Kg6-g7) (Ke2-f2) (Kg7-g6) (Kf2-e2) <rep>
17(26)+ 0:15.53 2144696 -1.00 a3-a4 (g5xh4) (a4-a5) (Ke5-f6) (a5-a6)
(Kf6-e7) (Ke3-f3) (Ke7-f7) (Kf3-e3)
(Kf7-g6) (Ke3-e2)
(Kg6-g7) (Ke2-f2) (Kg7-g6) (Kf2-e2) <rep>
17(26)& 0:17.88 3142343 -0.31 a3-a4 g5xh4 a4-a5 Ke5-f6 a5-a6
Kf6-e7 Ke3-f3 Ke7-f7 Kf3-g2 Kf7-g6 Kg2-h2
Kg6-f6 Kh2-g2 Kf6-e5 Kg2-h3 Ke5-e4 Kh3xh4
17(26). 0:18.33 3216014 -0.31 a3-a4 g5xh4 a4-a5 Ke5-f6 a5-a6
Kf6-e7 Ke3-f3 Ke7-f7 Kf3-g2 Kf7-g6 Kg2-h2
Kg6-f6 Kh2-g2 Kf6-e5 Kg2-h3 Ke5-e4 Kh3xh4
18(27)& 0:23.05 4319102 -0.31 a3-a4 g5xh4 a4-a5 Ke5-f6 a5-a6
Kf6-e7 Ke3-f3 Ke7-f7 Kf3-g2 Kf7-g6 Kg2-h2
Kg6-f6 Kh2-g2 Kf6-e5 Kg2-h3 Ke5-e4 Kh3xh4
Ke4-d4 (Kh4-h3)
18(27). 0:23.53 4414997 -0.31 a3-a4 g5xh4 a4-a5 Ke5-f6 a5-a6
Kf6-e7 Ke3-f3 Ke7-f7 Kf3-g2 Kf7-g6 Kg2-h2
Kg6-f6 Kh2-g2 Kf6-e5 Kg2-h3 Ke5-e4 Kh3xh4
Ke4-d4 (Kh4-h3)
19(29)+ 0:36.94 8205996 -0.01 a3-a4 (g5xh4) (a4-a5) (Ke5-f6) (a5-a6)
(Kf6-e7) (Ke3-f3) (Ke7-f7) (Kf3-g2)
(Kf7-g6) (Kg2-h2)
(Kg6-f6) (Kh2-g2) (Kf6-e5) (Kg2-h3)
(Ke5-e4) (Kh3xh4)
(Ke4-d4) (Kh4-h3)
19(29)& 0:42.20 10274059 +0.00 a3-a4 g5xh4 a4-a5 Ke5-f6 a5-a6
Kf6-e7 Ke3-f3 Ke7-f7 Kf3-g2 Kf7-g6 Kg2-f2
Kg6-f6 Kf2-e3 <rep>
19(29). 0:42.73 10381085 +0.00 a3-a4 g5xh4 a4-a5 Ke5-f6 a5-a6
Kf6-e7 Ke3-f3 Ke7-f7 Kf3-g2 Kf7-g6 Kg2-f2
Kg6-f6 Kf2-e3 <rep>
20(30)& 0:58.78 14292638 +0.00 a3-a4 g5xh4 a4-a5 Ke5-f6 a5-a6
Kf6-e7 Ke3-f3 Ke7-f7 Kf3-g2 Kf7-g6 Kg2-f2
Kg6-f6 Kf2-e3 <rep>
Without tablebases it takes a little longer:
16(22)& 0:00.72 562112 -2.43 h4xg5 h6xg5 Ke3-f3 Ke5-d4 a3-a4
a7-a5 Kf3-f2 Kd4-c3 Kf2-e3 Kc3-b3 Ke3-d3
Kb3xa4 Kd3-c4 Ka4-a3 Kc4-c3 a5-a4
16(26). 0:00.92 717385 -2.43 h4xg5 h6xg5 Ke3-f3 Ke5-d4 a3-a4
a7-a5 Kf3-f2 Kd4-c3 Kf2-e3 Kc3-b3 Ke3-d3
Kb3xa4 Kd3-c4 Ka4-a3 Kc4-c3 a5-a4
17(22)& 0:01.02 802124 -2.43 h4xg5 h6xg5 Ke3-f3 Ke5-d4 a3-a4
a7-a5 Kf3-f2 Kd4-c3 Kf2-e3 Kc3-b3 Ke3-d3
Kb3xa4 Kd3-c4 Ka4-a3 Kc4-c3 a5-a4 Kc3-c4
(Ka3-a2)
17(29). 0:01.27 997186 -2.43 h4xg5 h6xg5 Ke3-f3 Ke5-d4 a3-a4
a7-a5 Kf3-f2 Kd4-c3 Kf2-e3 Kc3-b3 Ke3-d3
Kb3xa4 Kd3-c4 Ka4-a3 Kc4-c3 a5-a4 Kc3-c4
(Ka3-a2)
18(24)& 0:02.11 1758316 -2.71 h4xg5 h6xg5 Ke3-f3 Ke5-d4 a3-a4
a7-a5 Kf3-f2 Kd4-c3 Kf2-e3 Kc3-b3 Ke3-d3
Kb3xa4 Kd3-c3 Ka4-b5 Kc3-b3 a5-a4 Kb3-a3
Kb5-a5 Ka3-b2
18(29). 0:02.70 2203279 -2.71 h4xg5 h6xg5 Ke3-f3 Ke5-d4 a3-a4
a7-a5 Kf3-f2 Kd4-c3 Kf2-e3 Kc3-b3 Ke3-d3
Kb3xa4 Kd3-c3 Ka4-b5 Kc3-b3 a5-a4 Kb3-a3
Kb5-a5 Ka3-b2
19(25)& 0:03.48 2965368 -3.07 h4xg5 h6xg5 Ke3-f3 Ke5-d4 a3-a4
a7-a5 Kf3-f2 Kd4-e4 Kf2-g3 Ke4-e3 Kg3-g2
Ke3-f4 Kg2-h2 Kf4xg4 Kh2-g2 Kg4-f4 Kg2-f2
g5-g4 Kf2-g2 (g4-g3)
19(30). 0:04.75 3964638 -3.07 h4xg5 h6xg5 Ke3-f3 Ke5-d4 a3-a4
a7-a5 Kf3-f2 Kd4-e4 Kf2-g3 Ke4-e3 Kg3-g2
Ke3-f4 Kg2-h2 Kf4xg4 Kh2-g2 Kg4-f4 Kg2-f2
g5-g4 Kf2-g2 (g4-g3)
20(26)& 0:07.63 6886991 -3.35 h4xg5 h6xg5 Ke3-f3 Ke5-d4 a3-a4
a7-a5 Kf3-f2 Kd4-c3 Kf2-e3 Kc3-b3 Ke3-d3
Kb3xa4 Kd3-c3 Ka4-a3 Kc3-c4 a5-a4 Kc4-c3
Ka3-a2 Kc3-b4 a4-a3 Kb4-c4 (Ka2-b2)
20(33). 0:09.52 8385690 -3.35 h4xg5 h6xg5 Ke3-f3 Ke5-d4 a3-a4
a7-a5 Kf3-f2 Kd4-c3 Kf2-e3 Kc3-b3 Ke3-d3
Kb3xa4 Kd3-c3 Ka4-a3 Kc3-c4 a5-a4 Kc4-c3
Ka3-a2 Kc3-b4 a4-a3 Kb4-c4 (Ka2-b2)
21(28)& 0:12.73 11460184 -3.56 h4xg5 h6xg5 Ke3-f3 Ke5-d4 a3-a4
a7-a5 Kf3-f2 Kd4-c3 Kf2-e3 Kc3-b3 Ke3-d3
Kb3xa4 Kd3-d2 Ka4-b4 Kd2-c2 a5-a4 Kc2-b2
a4-a3 Kb2-a2 Kb4-a4 Ka2-b1 Ka4-b5 (Kb1-a1)
(Kb5-c5) (Ka1-a2) (Kc5-b4)
21(32). 0:20.33 17267957 -3.56 h4xg5 h6xg5 Ke3-f3 Ke5-d4 a3-a4
a7-a5 Kf3-f2 Kd4-c3 Kf2-e3 Kc3-b3 Ke3-d3
Kb3xa4 Kd3-d2 Ka4-b4 Kd2-c2 a5-a4 Kc2-b2
a4-a3 Kb2-a2 Kb4-a4 Ka2-b1 Ka4-b5 (Kb1-a1)
(Kb5-c5) (Ka1-a2) (Kc5-b4)
22(30)& 0:25.91 22962139 -3.64 h4xg5 h6xg5 Ke3-f3 Ke5-d4 a3-a4
a7-a5 Kf3-f2 Kd4-e4 Kf2-g3 Ke4-e3 Kg3-g2
Ke3-f4 Kg2-h1 Kf4xg4 Kh1-h2 Kg4-f3 Kh2-h3
Kf3-f4 Kh3-h2 g5-g4 Kh2-g2 g4-g3 Kg2-f1
(Kf4-g5)
22(43)& 4:03.37 143248517 -3.45 a3-a4 g5xh4 a4-a5 h4-h3 Ke3-f3
h3-h2 Kf3-g2 Ke5-f4 Kg2xh2 Kf4xg4 a5-a6
h6-h5 Kh2-g2 h5-h4 Kg2-f2 h4-h3 Kf2-g1
Kg4-g5 Kg1-f1 Kg5-f5 Kf1-g1 Kf5-g4 Kg1-f2
Kg4-f4
22(43). 4:04.64 143910961 -3.45 a3-a4 g5xh4 a4-a5 h4-h3 Ke3-f3
h3-h2 Kf3-g2 Ke5-f4 Kg2xh2 Kf4xg4 a5-a6
h6-h5 Kh2-g2 h5-h4 Kg2-f2 h4-h3 Kf2-g1
Kg4-g5 Kg1-f1 Kg5-f5 Kf1-g1 Kf5-g4 Kg1-f2
Kg4-f4
23(44)& 5:24.98 188681540 -3.43 a3-a4 g5xh4 a4-a5 h4-h3 Ke3-f3
h3-h2 Kf3-g2 Ke5-f4 Kg2xh2 Kf4xg4 a5-a6
h6-h5 Kh2-g2 h5-h4 Kg2-f2 h4-h3 Kf2-g1
Kg4-g5 Kg1-f1 Kg5-f5 Kf1-g1 Kf5-g4 Kg1-h2
Kg4-h4 Kh2-g1 (Kh4-g5) <rep>
23(44). 5:27.04 189801214 -3.43 a3-a4 g5xh4 a4-a5 h4-h3 Ke3-f3
h3-h2 Kf3-g2 Ke5-f4 Kg2xh2 Kf4xg4 a5-a6
h6-h5 Kh2-g2 h5-h4 Kg2-f2 h4-h3 Kf2-g1
Kg4-g5 Kg1-f1 Kg5-f5 Kf1-g1 Kf5-g4 Kg1-h2
Kg4-h4 Kh2-g1 (Kh4-g5) <rep>
24(46)& 19:03.70 603892043 -3.28 a3-a4 g5xh4 a4-a5 h4-h3 Ke3-f3
h3-h2 Kf3-g2 Ke5-f4 Kg2xh2 Kf4xg4 a5-a6
h6-h5 Kh2-g2 h5-h4 Kg2-f2 h4-h3 Kf2-g1
Kg4-g5 Kg1-f1 Kg5-f5 Kf1-g1 Kf5-g4 Kg1-h2
Kg4-h4 Kh2-g1 Kh4-h5 (Kg1-f2)
24(46). 19:06.70 605589127 -3.28 a3-a4 g5xh4 a4-a5 h4-h3 Ke3-f3
h3-h2 Kf3-g2 Ke5-f4 Kg2xh2 Kf4xg4 a5-a6
h6-h5 Kh2-g2 h5-h4 Kg2-f2 h4-h3 Kf2-g1
Kg4-g5 Kg1-f1 Kg5-f5 Kf1-g1 Kf5-g4 Kg1-h2
Kg4-h4 Kh2-g1 Kh4-h5 (Kg1-f2)
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