Author: Roy Brunjes
Date: 13:14:10 02/09/03
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On February 09, 2003 at 15:26:20, Drexel,Michael wrote: >Yet another Shirov brilliancy: > >[D] r1b1k2r/p1qpb1pp/2p1p3/4R3/3Q4/2N5/PPP2PPP/R1B3K1 w kq - 0 13 > >Find 13.Bg5! > >[Event "BL 0203 SG Porz - Lübecker SV"] >[Site "Porz"] >[Date "2003.02.08"] >[Round "10.3"] >[White "Shirov, Alexei"] >[Black "Van Wely, Loek"] >[Result "1-0"] >[ECO "B30"] >[WhiteElo "2699"] >[BlackElo "2681"] >[Annotator ""] >[PlyCount "49"] >[EventDate "2003.??.??"] > >1. e4 c5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Qc7 5. O-O e6 6. Re1 Ng4 7. Bxc6 bxc6 8. >e5 f6 9. d4 cxd4 10. Qxd4 Nxe5 11. Nxe5 fxe5 12. Rxe5 Be7 13. Bg5 Bd6 (13... d6 >14. Bxe7 dxe5 15. Qc5 Rb8 16. Bd6 Qb6 17. Qxe5 Qxb2 18. Re1 Rb7 19. Qh5+ g6 20. >Qf3 Qxc2 21. Bc5 $18) 14. Bf4 c5 (14... Bxe5 15. Bxe5 Qb6 16. Qg4 $18) 15. Qe3 >a6 (15... Rb8 16. Nd5 $5 (16. Rxc5 Qxc5 17. Qxc5 Bxc5 18. Bxb8 $14) 16... Qb7 ( >16... Qc6 17. Qg3 $18) 17. Rxe6+ dxe6 18. Bxd6 Qxb2 19. Re1 Rb7 20. Nc7+ Rxc7 >21. Bxc7 O-O 22. Qxc5 $16) 16. Nd5 Qc6 17. Rg5 h6 18. Bxd6 hxg5 (18... Qxd6 19. >Rd1 $18) 19. Rd1 Rh6 20. Ne7 Qa4 21. Qf3 Bb7 22. Qxb7 Rd8 23. Ng8 Rh8 24. Qf3 >Rxg8 25. Qh5+ 1-0 Here are two examples from CM9000. The first is the junior personality I created (not necessarily the best, but a tactically oriented personality) and the second is CM9000 (same as Chessmaster but with 32 MB hashtables vs the default 4 MB). Hardware: Pentium III 500 MHz Hashtables = 32 MB for both personalities Personality = Junior Time Depth Score Positions Moves 0:01 1/6 0.82 75453 13.Rg5 Bf6 14.Qc5 Ba6 15.Rg3 O-O-O 16.Be3 0:01 1/6 0.86 85506 13.Bg5 Bd6 14.Bf4 c5 15.Rxe6+ dxe6 16.Qxd6 Qxd6 17.Bxd6 0:03 1/7 1.17 199039 13.Bg5 Bd6 14.Bf4 Bxe5 15.Bxe5 Qb6 16.Bxg7 Qxd4 17.Bxd4 0:06 1/8 0.90 369463 13.Bg5 Bd6 14.Bf4 c5 15.Rxe6+ dxe6 16.Qxd6 Qxd6 17.Bxd6 Bd7 18.Re1 0:20 1/9 1.05 1231024 13.Bg5 Bd6 14.Bf4 c5 15.Rxe6+ dxe6 16.Qxd6 Qxd6 17.Bxd6 Bd7 18.Re1 O-O-O 19.Bxc5 0:51 1/10 1.01 3363441 13.Bg5 Qb6 14.Qxb6 axb6 15.Bxe7 Kxe7 16.Re4 d5 17.Rb4 b5 18.Rg4 Kf8 19.Re1 2:57 1/11 0.95 12065238 13.Bg5 d6 14.Bxe7 Qxe7 15.Ree1 O-O 16.Ne4 d5 17.Nc5 Qf6 18.Rad1 Qxd4 19.Rxd4 5:53 1/12 1.01 24720340 13.Bg5 d6 14.Bxe7 Qxe7 15.Ree1 O-O 16.Ne4 d5 17.Nc5 Rb8 18.Rad1 Qf6 Personality = CM9000 Time Depth Score Positions Moves 0:06 1/7 0.00 337240 13.Bf4 d6 14.Ree1 O-O 15.Rad1 c5 16.Nd5 cxd4 17.Nxc7 0:12 1/8 -0.06 727741 13.Bf4 Qb6 14.Re4 O-O 15.Qd2 d5 16.Na4 Qd8 0:14 1/8 0.00 886890 13.Rh5 O-O 14.Qd3 g6 15.Rh6 d5 16.Rxg6+ hxg6 17.Qxg6+ Kh8 18.Qh5+ Kg8 19.Qg6+ 0:17 1/8 0.20 1099745 13.Bg5 Bd6 14.Bf4 Bxe5 15.Bxe5 c5 16.Nb5 Qb6 17.Qa4 0:30 1/9 0.19 1955773 13.Bg5 d6 14.Bxe7 dxe5 15.Qc5 Rb8 16.Bd6 Qb6 17.Qxe5 Qxb2 1:26 1/10 0.22 5961504 13.Bg5 Bd6 14.Rf5 Rf8 15.Rxf8+ Kxf8 16.Qh4 Kg8 17.Rd1 Ba6 18.Ne4 3:29 2/11 0.34 14692103 13.Bg5 Bd6 14.Rf5 Rf8 15.Rxf8+ Kxf8 16.Qh4 Kg8 17.Rd1 Ba6 18.Ne4 Be5 19.Nc5 It does appear this is rather easy for today's programs, even on slower hardware. Roy
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