Author: Dieter Buerssner
Date: 13:41:29 12/28/01
Go up one level in this thread
On December 28, 2001 at 14:51:26, Miguel A. Ballicora wrote:
>Well, if this is about testing computers, we better modified the endgame
>and add two pawns in a6 and a5.
>
>[D]8/3k2p1/p3pp2/Pp2PP2/1PpP2P1/8/4K3/8 w - - 0 35
>
>Now, the only best move should be d5 since the pawn endgame is easily won.
>Can the programs find it now?
Thanks to You, Miguel, and to Sune for all the interesting positions and
discussions.
I am sure, other programs will be much faster. Here is what Yace thinks. It
cannot (and will not for a long time) see anything close to draw, but I am
confident, that it would draw the game on modern hardware and not too fast time
control.
8234022 51.386 -0.21 11. 35. Ke3 Ke7 36. Ke4 exf5+ 37. gxf5 fxe5 38.
dxe5 Kf7 39. Kf4 g6 40. fxg6+ Kxg6 41. Ke3 Kf5
42. Kd4 Ke6 43. Ke4 Ke7 44. Ke3 Ke8 45. Kd4 Ke7
{0}
9624549 59.509 -0.61 12-- 35. Ke3 Ke7 36. Ke4 exf5+ 37. gxf5 fxe5 38.
dxe5 Kf7 39. Kf4 g6 40. fxg6+ Kxg6 41. Kg3 c3
42. e6 c2 43. e7 Kf7 44. Kf3
11292518 1:09.5 -1.61 12-- 35. Ke3 Ke7 36. Ke4 exf5+ 37. gxf5 fxe5 38.
dxe5 Kf7 39. Kf4 g6 40. fxg6+ Kxg6 41. Kg3 c3
42. e6 c2 43. e7 Kf7 44. Kf3
14891436 1:30.7 -2.01 12t 35. Ke3 Ke7 36. Kf3 exf5 37. gxf5 fxe5 38. dxe5
Kf7 39. Ke4 g6 40. f6 g5 41. Kf5 c3 42. e6+ Ke8
43. f7+ Ke7 44. Kg6 c2 45. Kg7 {0}
21250906 2:09.0 -2.00 12t+ 35. d5 exd5 36. e6+ Ke7 37. Ke3 c3 38. Kd3 d4
39. Kc2 Ke8 40. Kd3 Kf8 41. g5 c2 42. Kxc2 d3+
43. Kxd3 Ke7H {HT} {80}
24808939 2:30.9 -1.43 12t 35. d5 exd5 36. e6+ Ke7 37. Ke3 c3 38. Kd3 d4
39. Kc2 g6 40. Kd3 Kd6 41. Kc2 g5 42. Kd3H Ke7H
43. Kc2H Kf8H {HT} {-80}
25910579 2:37.4 -1.43 12. 35. d5 exd5 36. e6+ Ke7 37. Ke3 c3 38. Kd3 d4
39. Kc2 g6 40. Kd3 Kd6 41. Kc2 g5 42. Kd3 Ke7
43. Kc2 Kf8 {HT} {-80}
32582511 3:18.5 -1.39 13t 35. d5 exd5 36. e6+ Ke7 37. Ke3 c3 38. Kd3 d4
39. Kc2 g6 40. Kd3 Kd6 41. Kc2 g5 42. Kd3 Ke7
{-80}
37499937 3:49.1 -1.39 13. 35. d5 exd5 36. e6+ Ke7 37. Ke3 c3 38. Kd3 d4
39. Kc2 g6 40. Kd3 Kd6 41. Kc2 g5 42. Kd3 Ke7
{-80}
8234022 51.386 -0.21 11. 35. Ke3 Ke7 36. Ke4 exf5+ 37. gxf5 fxe5 38.
dxe5 Kf7 39. Kf4 g6 40. fxg6+ Kxg6 41. Ke3 Kf5
42. Kd4 Ke6 43. Ke4 Ke7 44. Ke3 Ke8 45. Kd4 Ke7
{0}
9624549 59.509 -0.61 12-- 35. Ke3 Ke7 36. Ke4 exf5+ 37. gxf5 fxe5 38.
dxe5 Kf7 39. Kf4 g6 40. fxg6+ Kxg6 41. Kg3 c3
42. e6 c2 43. e7 Kf7 44. Kf3
11292518 1:09.5 -1.61 12-- 35. Ke3 Ke7 36. Ke4 exf5+ 37. gxf5 fxe5 38.
dxe5 Kf7 39. Kf4 g6 40. fxg6+ Kxg6 41. Kg3 c3
42. e6 c2 43. e7 Kf7 44. Kf3
14891436 1:30.7 -2.01 12t 35. Ke3 Ke7 36. Kf3 exf5 37. gxf5 fxe5 38. dxe5
Kf7 39. Ke4 g6 40. f6 g5 41. Kf5 c3 42. e6+ Ke8
43. f7+ Ke7 44. Kg6 c2 45. Kg7 {0}
21250906 2:09.0 -2.00 12t+ 35. d5 exd5 36. e6+ Ke7 37. Ke3 c3 38. Kd3 d4
39. Kc2 Ke8 40. Kd3 Kf8 41. g5 c2 42. Kxc2 d3+
43. Kxd3 Ke7H {HT} {80}
24808939 2:30.9 -1.43 12t 35. d5 exd5 36. e6+ Ke7 37. Ke3 c3 38. Kd3 d4
39. Kc2 g6 40. Kd3 Kd6 41. Kc2 g5 42. Kd3H Ke7H
43. Kc2H Kf8H {HT} {-80}
25910579 2:37.4 -1.43 12. 35. d5 exd5 36. e6+ Ke7 37. Ke3 c3 38. Kd3 d4
39. Kc2 g6 40. Kd3 Kd6 41. Kc2 g5 42. Kd3 Ke7
43. Kc2 Kf8 {HT} {-80}
32582511 3:18.5 -1.39 13t 35. d5 exd5 36. e6+ Ke7 37. Ke3 c3 38. Kd3 d4
39. Kc2 g6 40. Kd3 Kd6 41. Kc2 g5 42. Kd3 Ke7
{-80}
37499937 3:49.1 -1.39 13. 35. d5 exd5 36. e6+ Ke7 37. Ke3 c3 38. Kd3 d4
39. Kc2 g6 40. Kd3 Kd6 41. Kc2 g5 42. Kd3 Ke7
{-80}
When I disallow d5 I get the following:
31952857 3:10.5 -1.58 13. 35. Kf3 fxe5 36. dxe5 exf5 37. gxf5 Ke8 38. Ke3
Kf7 39. Ke4 g5 40. e6+ Ke8 41. f6 c3 42. f7+
Ke7 43. Kd3 g4 44. Kc2 g3 {HT} {0}
33941021 3:22.2 -1.98 14-- 35. Kf3 fxe5 36. dxe5 exf5 37. gxf5 Ke8 38. Ke3
Kf7 39. Ke4 g5 40. e6+ Ke8 41. f6 c3 42. e7 c2
43. f7+ Kxf7 44. Kf5 c1=Q 45. e8=R
42404343 4:12.8 -1.64 14t 35. Kf3 fxe5 36. dxe5 exf5 37. gxf5 Ke8 38. Ke3
Kf7 39. Ke4 Kg8 40. Kf3 g5 41. e6 g4+ 42. Ke3
Kg7 43. e7 Kf7 44. f6 c3 45. e8=Q+ {HT} {921}
52996413 5:17.8 -1.64 14. 35. Kf3 fxe5 36. dxe5 exf5 37. gxf5 Ke8 38. Ke3
Kf7 39. Ke4 Kg8 40. Kf3 g5 41. e6 g4+ 42. Ke3
Kg7 43. e7 Kf7 44. f6 c3 45. e8=Q+ {HT} {921}
55779484 5:34.4 -2.04 15-- 35. Kf3 fxe5 36. dxe5 exf5 37. gxf5 Ke8 38. Ke3
Kf7 39. Ke4 g6 40. f6 Ke6 41. Kf4 c3 42. Kg5 c2
43. Kxg6 c1=Q 44. f7 Ke7 45. f8=R
57324608 5:43.4 -3.04 15-- 35. Kf3 fxe5 36. dxe5 exf5 37. gxf5 Ke8 38. Ke3
Kf7 39. Ke4 g5 40. e6+ Ke8 41. f6 c3 42. f7+
Kf8 43. e7+ Kxe7 44. Kd4 c2 45. Ke3
86050773 8:23.7 -4.55 15t 35. Kf3 fxe5 36. dxe5 exf5 37. gxf5 Ke8 38. Ke3
Kf7 39. Ke4 g5 40. e6+ Ke8 41. f6 c3 42. f7+
Kf8 43. Ke3 g4 44. Kd3 g3 45. e7+ Kxf7 46. Ke2
g2 47. Kf2 Kxe7 {-160}
31952857 3:10.5 -1.58 13. 35. Kf3 fxe5 36. dxe5 exf5 37. gxf5 Ke8 38. Ke3
Kf7 39. Ke4 g5 40. e6+ Ke8 41. f6 c3 42. f7+
Ke7 43. Kd3 g4 44. Kc2 g3 {HT} {0}
33941021 3:22.2 -1.98 14-- 35. Kf3 fxe5 36. dxe5 exf5 37. gxf5 Ke8 38. Ke3
Kf7 39. Ke4 g5 40. e6+ Ke8 41. f6 c3 42. e7 c2
43. f7+ Kxf7 44. Kf5 c1=Q 45. e8=R
42404343 4:12.8 -1.64 14t 35. Kf3 fxe5 36. dxe5 exf5 37. gxf5 Ke8 38. Ke3
Kf7 39. Ke4 Kg8 40. Kf3 g5 41. e6 g4+ 42. Ke3
Kg7 43. e7 Kf7 44. f6 c3 45. e8=Q+ {HT} {921}
52996413 5:17.8 -1.64 14. 35. Kf3 fxe5 36. dxe5 exf5 37. gxf5 Ke8 38. Ke3
Kf7 39. Ke4 Kg8 40. Kf3 g5 41. e6 g4+ 42. Ke3
Kg7 43. e7 Kf7 44. f6 c3 45. e8=Q+ {HT} {921}
55779484 5:34.4 -2.04 15-- 35. Kf3 fxe5 36. dxe5 exf5 37. gxf5 Ke8 38. Ke3
Kf7 39. Ke4 g6 40. f6 Ke6 41. Kf4 c3 42. Kg5 c2
43. Kxg6 c1=Q 44. f7 Ke7 45. f8=R
57324608 5:43.4 -3.04 15-- 35. Kf3 fxe5 36. dxe5 exf5 37. gxf5 Ke8 38. Ke3
Kf7 39. Ke4 g5 40. e6+ Ke8 41. f6 c3 42. f7+
Kf8 43. e7+ Kxe7 44. Kd4 c2 45. Ke3
86050773 8:23.7 -4.55 15t 35. Kf3 fxe5 36. dxe5 exf5 37. gxf5 Ke8 38. Ke3
Kf7 39. Ke4 g5 40. e6+ Ke8 41. f6 c3 42. f7+
Kf8 43. Ke3 g4 44. Kd3 g3 45. e7+ Kxf7 46. Ke2
g2 47. Kf2 Kxe7 {-160}
So, I think, it will never switch away from d5.
Regards,
Dieter
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