Author: Bernhard Bauer
Date: 06:15:21 02/28/00
Go up one level in this thread
On February 28, 2000 at 08:52:16, Robert Hyatt wrote:
>Howard posted an interesting pawn ending test suite last week. Vincent
>asked me about position 4, where Bxg6 is supposed to win. It seems that
>cxb5 is also good enough to win in that position, based on a deep search
>using tablebases.
>
>Anyone interested in studying this position? Here is my output (that I saved,
>further searches were lost before I thought to save them):
>
> 15 3:54 2.92 1. cxb5 Bb7 2. Rdd1 Rd8 3. Bb3 Rf6
> 4. Re7+ Kc8 5. Be6+ Kb8 6. h4 Bf3 7.
> Rd2 Be4 8. Kf2 Bf5 9. Bxf5 gxf5 10.
> d7 Rxh6
>
>I will try to post some analysis of Bxg6 as well...
Here are my results for Howards interestig test.
Results for Howard Exner's PassedPawnSuite
Date: 02.25.2000
Hardware: 2xP3-450
Program: Crafty 17.8
Extensions: onerep=0.35 incheck=0.5 recapture=0.5
pushpp=0.75 threat=0.5 singular=0.5
Endgame table bases: 5 man
Hash tables: Hash=24Mb Pawn=8Mb Cache=8Mb
No. Best move Solution time Different move
sec move depth time score
1. Qg6 6.3
2. Qd5 1.0
3. Bxe5 37.3
4. Bxg6 >3600 cxb5 18 3213 3.01
5. Rxc6 3.2
6. f6 8.3
7. Rh1 11.3
8. e5 1.0
9. Rxf7 Qxf7 16.7
10. b5 538
11. Rxa6 >3600 Qe7 16 1204 0.50
12. b2 >600 Kd6 18 597 0.00
13. Nxa7 31.2
14. Rxf6 >3600 Rfe1 16 2829 0.21
15. cxb6 1.0
16. Bxb3 5.6
17. Nd4 170
18. Be6 8.6
19. Rxf6 >600 Qd4 16 329 1.23
20. Qc2 1.0
21. Kd4 0.0
22. Kh7 23.9
23. Qg3 86
24. d6 0.0
Solved within 5 sec: 7
Solved within 10 sec: 11
Solved within 30 sec: 14
Solved within 1 min: 16
Solved within 2 min: 17
Solved within 5 min: 18
Solved within 10 min: 19
Solved within 60 min: 19
Kind regards
Bernhard
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