Author: Howard Exner
Date: 15:03:47 02/28/00
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On February 28, 2000 at 09:15:21, Bernhard Bauer wrote: >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 I've always liked this Kd4 problem. Tablebase programs like Crafty will make short work of this one but I think non tablebase programs will have trouble with this one. [D]8/Bpk5/8/P2K4/8/8/8/8 w - - >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 Crafty has some quick solutions, to some difficult positions. Qg6 in #1, converting to a won ending, will give many strong programs a tough time. Crafty has some smart code that recognizes pawn majorities. In this Qg6 case, as previously discussed a few months ago, no other program came forward with Qg6 as the first choice.
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