Author: Hans van der Zijden
Date: 05:45:29 12/30/01
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On December 29, 2001 at 19:37:12, Aaron Gordon wrote: >Here is the PGN of a game I played on FICS just a moment ago... well, I don't >think I've ever seen this happen before. :) Is this massive blunder due to >hashtable collisions perhaps? Any opinions are welcome.. I'm definately no >expert. > >Time control was 1+1. The opponent was Gandalf 5. I have no idea what speed of >CPU it was running on. I was using Chesstiger 14, 192mb hash, 1.8GHz AthlonXP. >Here's the PGN.. > >[Event "FICS unrated lightning game"] >[Site "fics, Fremont, California USA"] >[Date "2001.12.29"] >[Time "16:05:05"] >[Round "-"] >[White "cptesterx"] >[Black "LittleGoliath"] >[WhiteElo "0"] >[BlackElo "2827"] >[TimeControl "60+1"] >[Mode "ICS"] >[Result "1-0"] > >1. c4 Nf6 2. Nc3 e6 3. Nf3 Bb4 4. Qc2 O-O 5. g3 b6 6. Bg2 Bb7 7. O-O d5 >8. cxd5 Nxd5 9. Nxd5 exd5 10. d4 Bd6 11. Ng5 g6 12. Qb3 c6 13. Re1 a5 14. Bd2 >a4 15. Qf3 h6 16. Nh3 g5 17. Qh5 Kg7 18. e4 a3 19. Bxg5 hxg5 20. Nxg5 Rh8 >21. Qxf7+ Kh6 22. Qxb7 Qxg5 23. exd5 Qf5 24. Re6+ Qxe6 25. dxe6 axb2 26. Rb1 >Ra4 27. Bf3 Rxd4 28. Qf7 Rf8 29. Qh5+ Kg7 30. Qg5+ Kh7 31. e7 Bxe7 32. Qxe7+ >Kg8 33. Qe6+ Rf7 34. Bh5 Rd7 35. Rxb2 Re7 36. Bxf7+ Kf8 37. Qh6+ Kxf7 38. Rxb6 >Nd7 39. Rxc6 Nf8 >Black resigns} 1-0 > >After this it's all down hill... > >[D]rn1q1rk1/1b3p2/1ppb3p/3p2pQ/p2P4/6PN/PP1BPPBP/R3R1K1 b - - 0 17 > >Move played was 17...Kg7 >Here's the PV of CT14 starting analysis from this position > >00:00:00.1 -0.24 8 143543 Qf6 e4 dxe4 Bxe4 Re8 Bc3 a3 d5 Be5 dxc6 axb2 cxb7 >bxa1Q bxa8Q Qxc3 >00:00:00.2 -0.08 9 290519 Qf6 e4 dxe4 Bxe4 Re8 Bc3 a3 d5 Be5 dxc6 axb2 cxb7 >bxa1Q bxa8Q Qxc3 >00:00:01.3 -0.34 10 570630 Qf6 e4 dxe4 Bxe4 Qg7 Bc3 f6 a3 Ba6 Bc2 Bc4 >00:00:03.6 -0.28 11 1189851 Qf6 e4 dxe4 Bxe4 Qg7 Bc3 f6 a3 Ba6 d5 c5 Bg6 >00:00:08.2 -0.30 12 2731903 Qf6 e4 dxe4 Bxe4 Qg7 Bc3 f6 a3 g4 Nf4 Qg5 Qg6+ Qxg6 >Bxg6 Nd7 >00:00:16.4 -0.30 13 5713466 Qf6 e4 dxe4 Bxe4 Qg7 Bc3 f6 Bg6 Bc8 f4 a3 b3 Bxh3 >Qxh3 Bxf4 >00:00:30.4 -0.40 14 11221234 Qf6 e4 dxe4 Bxe4 Qg7 Bc3 f6 Bf5 a3 b3 Bc8 Bxc8 Rxc8 >Re6 Rd8 Rae1 >00:01:07.8 -0.40 15 25691190 Qf6 e4 dxe4 Bxe4 Qg7 > >Any idea's on what might have caused this? I don't understand what so bad about it. Sure black has a bad position and probably losing, but it is also bad after Qf6. Fritz7 analyzed 15 minutes on it (Amd 1200) and thought Qf6 was the best move (0.81) and Kg7 was the second best move (1.09). I think we can rule out a hashtablecollision. Hans.
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