Author: Martin Andersen
Date: 17:01:10 12/06/03
Go up one level in this thread
On December 06, 2003 at 18:10:23, Dana Turnmire wrote:
>>[d] 4k3/5ppp/8/8/8/8/PPP5/3K4 w - -
>>
>>{The main variation is } 1. Ke2 Kd7 2. Kf3 Kc6 3. a4 h5 4. c4 f5 5. Kg3 Kb6 6.
>>b4 g5 {or ...g6 7.a5+ Ka6 8.c5 Kb5 9.Kg2 g5 (or 9...h4 10.Kh2! f4 11.Kg1!! g5
>>12.Kg2 g4 13.Kg1, etc.) 10.Kg3 g4 11.Kf2! f4 12.Kg2 h4 13.Kg1!! f3 14.Kf2 h3
>>15.Kg3, and now the Black king must move, allowing a White pawn to queen.} 7.
>>a5+ Ka6 {7...Kb7 8.c5} 8. c5 h4+ 9. Kh3 f4 {or 9...Kb5 10.Kh2, as in the
>>variation above} 10. c6 f3 11. b5+ Ka7 12. c7 g4+ {or 12...Kb7 13.b6 g4+
>>14.Kh2 g3+ 15.Kg1 h3 16.a6+ Kc8 17.a7} 13. Kxg4 f2 14. c8=Q f1=Q 15. b6+
>>{mate} 1-0
Deep analysis with Crafty 19.6 in Scid 3.5beta1 (long analysis fixed) does
not show a winning score for white:
Depth: 22 Nodes: 5002768K (980 kn/s)
Score: +0.41 Time: 5106.68 seconds
1. a4!!
20 +0.52 1. a4 Kd7 2. a5 Kc6 3. c4 h5 4. b4 h4 5. b5+ Kb7 6. a6+ Ka7 7. Ke2 h3
8. Kf3 g5 9. Kf2 g4 10. Kg3 f6 11. c5 f5 (815.50)
21 +0.01 1. a4 Kd7 2. a5 Kc6 3. Ke2 Kb5 4. b4 h5 5. Kf3 h4 6. Kg4 g5 7. Kh3 Ka6
8. Kg4 Kb5 (1428.98)
21 +0.01 1. a4 Kd7 2. a5 Kc6 3. Ke2 Kb5 4. b4 h5 5. Kf3 h4 6. Kg4 g5 7. Kh3 Ka6
8. Kg4 Kb5 (2009.08)
21 +0.01 1. a4 Kd7 2. a5 Kc6 3. Ke2 Kb5 4. b4 h5 5. Kf3 h4 6. Kg4 g5 7. Kh3 Ka6
8. Kg4 Kb5 (2034.61)
22 +0.01 1. a4 Kd7 2. a5 Kc6 3. Ke2 Kb5 4. b4 h5 5. Kf3 h4 6. Kg4 g5 7. Kh3 Ka6
8. Kg4 Kb5 (2378.38)
22 +0.01 1. a4 Kd7 2. a5 Kc6 3. Ke2 Kb5 4. b4 h5 5. Kf3 h4 6. Kg4 g5 7. Kh3 Ka6
8. Kg4 Kb5 (2684.72)
22 +0.01 1. a4 Kd7 2. a5 Kc6 3. Ke2 Kb5 4. b4 h5 5. Kf3 h4 6. Kg4 g5 7. Kh3 Ka6
8. Kg4 Kb5 (3064.37)
22 +0.41 1. a4!! (3256.86)
22 +0.41 1. a4!! (4813.42)
22 +0.41 1. a4!! (5106.68)
Martin.
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