Author: Dieter Buerssner
Date: 10:21:45 05/19/04
Go up one level in this thread
On May 18, 2004 at 13:23:24, Eduard Nemeth wrote:
>On May 18, 2004 at 13:15:05, Eduard Nemeth wrote:
>
>>Pawn-endgame (Testposition) !
>>
>>In a Bullet-Game (Yesterday) I have not seen a winning Line in a Pawn endgame.
>>
>>:(
>>
>>[Event "Wertungspartie, 1m + 0s"]
>>[Site "Großer Spielsaal"]
>>[Date "2004.05.17"]
>>[Round "?"]
>>[White "Opponent"]
>>[Black "Eduard"]
>>[Result "1/2-1/2"]
>>[ECO "C21"]
>>[WhiteElo "2141"]
>>[BlackElo "2089"]
>>[SetUp "1"]
>>[FEN "8/3k3p/1p4p1/p2p1p2/PP3P1P/2PK2P1/8/8 w - - 0 40"]
>>[PlyCount "6"]
>>[EventDate "2004.05.17"]
>>[TimeControl "60"]
>>
>>40. Kd4 {0} Kd6 {1} (40... b5 $3 41. Kxd5 axb4 42. cxb4 bxa4 43. Kc4 Kc6 44.
>>b5+ Kb6 45. Kb4 a3 46. Kxa3 Kxb5 47. Kb3 Kc5 48. Kc3 Kd5 49. Kd3 h6 50. Ke2 Ke4
>>51. Kf2 Kd3 52. Kf3 Kd2 53. Kf2 h5 54. Kg1 Ke1 55. Kg2 Ke2 56. Kg1 Kf3 57. Kh2
>>Kf2 58. Kh3 Kg1 59. g4 hxg4+ 60. Kg3) 41. Kd3 {0} Kd7 {1} 42. Kd4 {1} Kd6 {
>>(Lag: Av=0.34s, max=0.6s) 0} 1/2-1/2
>>
>>Diagram:
>
>[D]8/3k3p/1p4p1/p2p1p2/PP1K1P1P/2P3P1/8/8 b - - 0 1
>
>b6-b5! wins.
>
>Line:
>
>40... b5!! 41. Kxd5 axb4 42. cxb4 bxa4 43. Kc4 Kc6 44.
>b5+ Kb6 45. Kb4 a3 46. Kxa3 Kxb5 47. Kb3 Kc5 48. Kc3 Kd5 49. Kd3 h6 50. Ke2 Ke4
>51. Kf2 Kd3 52. Kf3 Kd2 53. Kf2 h5 54. Kg1 Ke1 55. Kg2 Ke2 56. Kg1 Kf3 57. Kh2
>Kf2 58. Kh3 Kg1! -+
>
>
>Which Program can find the winning move 40…b5!! and with a score >+1 for black?
After 1 hour, Yace showed a score > 1.
1619999658 28:28.5 0.33 17. 1...b5 2.Kxd5 axb4 3.cxb4 bxa4 4.Kc4 Kc7 5.b5
a3 6.Kb3 Kb6 7.Kxa3 Kxb5 8.Kb3 Kc5 9.Kc3 h6
10.Kd3 Kd5 11.Ke3 Kc4 12.Kf3 Kd4 13.Kf2 Kd3
14.Kf3 Kd2 15.Kf2 h5 16.Kf3 Ke1 17.Kg2 Ke2
18.Kh2 Kd3 19.Kh3 Ke4H 20.Kg2H {HT} {0}
2400449257 43:19.9 0.73 18++ 1...b5 2.Kxd5 axb4 3.cxb4 bxa4 4.Kc4 Kc7 5.b5
a3 6.Kb3 Kb6 7.Kxa3 Kxb5 8.Kb3 Kc5 9.Kc3 h6
10.Kd3 Kd5 11.Ke3 Kc4 12.Kf3 Kd4 13.Kf2 Kd3
14.Kf3 Kd2 15.Kg2 Ke3 16.h5 gxh5 17.Kh2 Kf3
18.Kh3 Kf2 19.Kh2 Ke2 20.Kh3 {80}
3457481576 1:05:05 1.73 18++ 1...b5 2.Kxd5 axb4 3.cxb4 bxa4 4.Kc4 Kc7 5.b5
a3 6.Kb3 Kb6 7.Kxa3 Kxb5 8.Kb3 Kc5 9.Kc3 h6
10.h5 gxh5 11.Kb3 Kd4 12.Kb4 Kd3 13.Kb5 h4
14.g4 fxg4 15.f5 h5 16.f6 h3 17.f7 h2 18.f8=R
h1=Q 19.Rf1 {661}
143478693 1:23:57 2.08 18t 1...b5 2.Kxd5 axb4 3.cxb4 bxa4 4.Kc4 Kc6 5.b5+
Kb6 6.Kb4 a3 7.Kxa3 Kxb5 8.Kb3 Kc5 9.Kc3 h6
10.Kd3 Kd5 11.Ke3 Kc4 12.Ke2 Kc3 13.Kf2 Kd3
14.Kf3 h5 15.Kf2 Kd2 16.Kf3 Ke1 17.Ke3 Kd1H
18.Kf3H Kc1H 19.Kf2H {HT} {0}
745441530 1:34:16 2.08 18. 1...b5 2.Kxd5 axb4 3.cxb4 bxa4 4.Kc4 Kc6 5.b5+
Kb6 6.Kb4 a3 7.Kxa3 Kxb5 8.Kb3 Kc5 9.Kc3 h6
10.Kd3 Kd5 11.Ke3 Kc4 12.Ke2 Kc3 13.Kf2 Kd3
14.Kf3 h5 15.Kf2 Kd2 16.Kf3 Ke1 17.Ke3 Kd1
18.Kf3 Kc1 19.Kf2 {HT} {0}
901304828 1:36:56 1.68 19-- 1...b5 2.Kxd5 axb4 3.cxb4 bxa4 4.Kc4 Kc6 5.b5+
Kb6 6.Kb4 a3 7.Kxa3 Kxb5 8.Kb3 Kc5 9.Kc3 h6
10.Kd3 Kd5 11.Ke3 Kc4 12.Ke2 Kc3 13.Kf2 Kd3
14.Kf3 Kd4 15.Ke2 Ke4 16.Kf2 Kd4 17.Kf3 Kc5
18.Kf2 Kc4 19.Ke3 Kc3 20.Ke2 Kc2 21.Ke3 Kb3
22.h5H gxh5H 23.Kd4H Ka3H 24.Ke5H Kb2H 25.Kxf5H
Kc3H 26.Kf6H Kc2H 27.Kf7H {HT} {0}
2895299334 2:14:11 1.61 19t 1...b5 2.Kxd5 axb4 3.cxb4 bxa4 4.Kc4 Kc6 5.b5+
Kb6 6.Kb4 a3 7.Kxa3 Kxb5 8.Kb3 Kc5 9.Kc3 h6H
10.Kb2H Kd4H 11.Ka3H {HT} {0}
4044813818 2:33:43 1.61 19. 1...b5 2.Kxd5 axb4 3.cxb4 bxa4 4.Kc4 Kc6 5.b5+
Kb6 6.Kb4 a3 7.Kxa3 Kxb5 8.Kb3 Kc5 9.Kc3 h6
10.Kb2 Kd4 11.Ka3 h5H 12.g4H fxg4H 13.Kb4H g3H
14.Kb3H {HT} {80}
3558222417 3:50:59 2.01 20++ 1...b5 2.Kxd5 axb4 3.cxb4 bxa4 4.Kc4 Kc6 5.b5+
Kb6 6.Kb4 a3 7.Kxa3 Kxb5 8.Kb3 Kc5 9.Kc3 h6
10.Kb2 Kd4 11.h5 gxh5 12.Kb3 h4 13.g4 fxg4
14.f5 g3 15.Ka4 h5 16.f6 g2 17.f7 g1=Q 18.f8=R
Unfortunately, the lines shown are "outside of bounds" and/or by a large extend
picked out of HTs, and therefore not very reliable, especially at the end. But I
believe, the engine really saw the win (by search, not by evaluation). The shown
depthes don't mean much.
Regards,
Dieter
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