Author: Will Singleton
Date: 07:51:25 02/28/00
Go up one level in this thread
On February 28, 2000 at 09:15:21, Bernhard Bauer wrote: >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 You have to search for a specific amount of time, rather than quit when the key move is found. The move has to be found for the right reason. Will
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