Author: blass uri
Date: 00:36:50 03/12/00
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On March 12, 2000 at 02:19:03, Chessfun wrote: > >In this game Zarkov asked 3 times if I wanted to take back Fritz >move as it wasn't the best. > >This was after moves: 10....Na4 17....Bd7 19.....Kd8 > >Fritz just don't consider 18. e6 which is the winning move. > >Fritz at move 23.....saw a mate in 19 therefore sacking the queen. > >[Event "Easter Tourney"] >[Site "Scarb"] >[Date "2000.03.12"] >[Round "1"] >[White "Zarkov 5"] >[Black "Fritz 6a"] >[Result "1-0"] >[PlyCount "57"] > >1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. Bc4 Qc7 6. Qe2 Nb6 7. Bd3 Nc6 8. >Nf3 d5 9. h3 a6 10. Bf4 Na4 11. cxd4 Nb4 12. O-O Nxd3 13. Qxd3 Nxb2 14. Qb3 >Nc4 15. Nbd2 b5 16. a4 Rb8 17. Rfc1 Bd7 18. e6 Qxf4 19. exd7+ Kd8 20. axb5 >axb5 21. Ne5 Nxe5 22. dxe5 Qxd2 23. Qa3 Qe1+ 24. Rxe1 Kxd7 25. Qc5 d4 26. >Qxd4+ Ke8 27. Red1 f6 28. e6 b4 29. Qd7+ 1-0 > >This analysis of F6 for Whites 18th move: > >Zarkov 5 - Fritz 6a >[D]1r2kb1r/2qbpppp/p7/1p1pP3/P1nP1B2/1Q3N1P/3N1PP1/R1R3K1 w k - 0 1 > >Analysis by Fritz 6: >18.Rab1 Rc8 19.axb5 Bxb5 20.Nxc4 Bxc4 21.Qc3 e6 22.Nd2 Be7 > ³ (-0.62) Depth: 8/23 00:00:02 767kN >18.axb5 > ³ (-0.59) Depth: 8/23 00:00:03 826kN >18.axb5 axb5 19.Rab1 Ra8 20.Ra1 Rxa1 21.Rxa1 Bc6 22.Nxc4 dxc4 > ³ (-0.56) Depth: 8/24 00:00:03 988kN >18.axb5 axb5 19.Rab1 Bf5 20.Nxc4 dxc4 21.Rxc4 Qd8 22.Rb2 Be6 > ³ (-0.62) Depth: 9/25 00:00:06 1692kN >18.axb5 axb5 19.Rab1 Bf5 20.Rb2 Qb7 21.Nxc4 dxc4 22.Rxc4 Be6 > ³ (-0.56) Depth: 10/30 00:00:14 4213kN >18.axb5 axb5 19.Rab1 Bf5 20.Rb2 Qb7 21.Ra2 Rc8 22.Nh4 Nxd2 > ³ (-0.62) Depth: 11/32 00:00:46 13072kN >18.axb5 Bxb5 19.Nxc4 dxc4 20.Qc3 e6 21.Bg5 Qd7 22.Rcb1 h6 > ³ (-0.47) Depth: 12/33 00:03:27 58939kN >18.e6 > ³ (-0.44) Depth: 12/33 00:03:44 64214kN >18.e6 Qxf4 19.exd7+ Kd8 20.axb5 axb5 > ³ (-0.37) Depth: 12/37 00:03:56 67685kN > >(Bird, Scarb 12.03.2000) > >So it sees it after 3:27 but prior to Bd7 when it needed >to see it who knows how long?. Fritz6light on p200MMX can find e6 after 45 seconds at depth 10. It seems that there is some weong evaluation change from Fritz6light to Fritz6. Finding e6 is a good positional test for chess programs. I say positional because programs usually find e6 before they find a tactical win. >Zarkov 5 sees it after 2081 nodes less than 1 second. Thanks. It seems that zarkov5 has better evaluation function. What is the evaluation of zarkov5? Uri
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