Author: Michael Conway
Date: 22:11:10 05/31/01
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On May 31, 2001 at 23:16:25, Christophe Theron wrote: >On May 31, 2001 at 20:16:42, Michael Conway wrote: > >>On May 31, 2001 at 14:28:37, Christophe Theron wrote: >> >>>On May 31, 2001 at 05:00:59, Michael Conway wrote: >>> >>>>In this game, Chess Tiger blundered away a knight in the opening with the >>>>terrible 7...h6?? and then came back to crush ChessGenius using a powerful pawn >>>>push. >>>> >>>>I think this game shows the importance of the opening book, especially in a >>>>weaker chess engine (7...Qe7 is the book continuation). The game also showed >>>>ChessGenius' weakness in evaluating advanced and passed pawns. >>>> >>>>Interestingly, Genius likes 7...Qe7 after around three seconds of evaluation >>>>while Tiger after six minutes in analysis mode preferred 7...Be7 (after giving >>>>7...Qh4 a long look). Tiger never gave 7...Qe7 serious consideration. >>>> >>>>Christophe, I noticed in analysis mode that if Tiger had given itself several >>>>seconds to look at 7...h6, it wouldn't have played it. Can anything be done to >>>>the program to reduce the likelihood of such blunders? >>>> >>>>Thanks. >>>> >>>> >>>>TRGpro overclocked to 28 MHz. No PB. >>>> >>>>[Event "10-min Game"] >>>>[Site "Brooklyn"] >>>>[Date "2001.05.31"] >>>>[Round "1"] >>>>[White "ChessGenius"] >>>>[Black "Chess Tiger"] >>>>[Result "0-1"] >>>> >>>>1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Bd3 d5 5. Nxe5 Nd7 6. Nxd7 Bxd7 7. Qe2 h6 >>>>8. f3 Bc6 9. fxe4 dxe4 10. c3 Qe7 11. Bc4 g6 12. O-O f5 13. g4 Qg7 >>>>14. Bf4 Bd6 15. Bxd6 cxd6 16. Nd2 d5 17. Bb5 O-O 18. gxf5 gxf5+ 19. Kh1 Kh7 >>>>20. Rg1 Qf7 21. Raf1 f4 22. Bxc6 bxc6 23. Qg4 h5 24. Qg5 f3 25. Qg3 Rab8 >>>>26. b3 Rbe8 27. c4 Rg8 28. Qd6 Rxg1+ 29. Rxg1 f2 30. Rf1 e3 31. Qxc6 e2 >>>>32. Qxd5 Qxd5+ 33. cxd5 e1=Q 34. Kg2 Qxd2 35. h4 Rg8+ 36. Kf3 Qd3+ >>>>37. Kxf2 Rf8+ 38. Kg2 Qxf1+ 39. Kg3 Rf3+ 40. Kh2 Rh3# 0-1 >>> >>> >>> >>>Thanks for pointing this out, Michael. >>> >>>I'll fix it today. >>> >>> >>> >>> Christophe >> >>Just out of curiosity, Christophe, when you say you'll fix it, do you mean >>you'll add 7...Qe7 to the opening book or will you do something additional to >>the engine itself? > > >I have been working on the engine since the release of the free version. The new >engine is better, but it would still blunder in this game. Actually it just >needs a few seconds more to avoid h6??, but at the time control you have used it >plays before realizing that the move is bad. > >So the fix is to add Qe7 in the opening book. > >And actually... guess what I have noticed today when I tried to add this move in >the book? > >Well... I had ALREADY fixed this in the book, on May 2nd. But I did not >recompile the book, so the book which has been released with the free version >does not have this update (as you noticed). > >Now I have recompiled the book (after fixing a number of other lines as well). > > > >>Also, when you fix it, will you make the modified version of the program >>available to us? > > >I'm going to email you the new book right now. > >If another Chess Tiger for Palm user wants this update, please send me a request >at > > support@chesstiger.com > > > > Christophe Thanks. Eagerly awaiting the graphical version. Michael
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