Author: Richard Pijl
Date: 02:18:30 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?
>
>Eduard.
The Baron (like the other programs) finds b5 almost immediately with a positive
score, but never a winning score (between 0.1 and 0.2). This is the line after
one hour (Xeon 2.8, 100Mb hash):
20(46). 55:12.95 1584645740 +0.19 b6-b5 Kd4xd5 a5xb4 c3xb4 b5xa4 Kd5-c4
Kd7-c7 b4-b5 a4-a3 Kc4-b3 Kc7-b6 Kb3xa3
Kb6xb5 Ka3-b3 h7-h6 Kb3-c3 Kb5-c5 Kc3-d3
Kc5-d5 Kd3-e3 Kd5-c4 Ke3-f3
Richard.
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