Author: John Merlino
Date: 20:49:20 08/27/03
Go up one level in this thread
On August 27, 2003 at 01:50:46, Mike Byrne wrote: >contains a position that has been tested for years - > >first the game: > >[Event "New York"] >[Site "?"] >[Date "1947.??.??"] >[Round "?"] >[White "Evans, L."] >[Black "Pilnick, C."] >[Result "1-0"] >[ECO "C13"] >[PlyCount "57"] >[EventDate "1947.??.??"] > >1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Be7 5. Bxf6 Bxf6 6. e5 Be7 7. Qg4 O-O 8. >O-O-O c5 9. h4 cxd4 10. Nce2 Nc6 11. f4 Qa5 12. Kb1 d3 13. cxd3 Bd7 14. Rh3 >Rac8 15. Rg3 g6 16. d4 b5 17. h5 Nb4 18. a3 Nc6 19. hxg6 fxg6 20. Nc3 b4 21. >Bd3 Be8 22. Nf3 bxa3 23. Qxe6+ Bf7 24. Bxg6 axb2 25. Bxh7+ Kh8 26. Qh6 Qa1+ 27. >Kc2 b1=Q+ 28. Rxb1 Nb4+ 29. Kd1 1-0 > >Larry Evans took about 30 minutes to make 24.Bxg6 in 1947. In 1993, the TASC >R30 reportedly solved this in 19 hours. Cray Blitz was reportedly able to solve >this in 1.9 seconds (Source CCR 1995). Rebel on a P75 took almost 20 minutes >and still showed a negative score. HIARCS on a P90 took 1 hour and 5 minutes. >HIARCS today shows a positive score in <1 minute on my machine. > >Evans,L - Pilnick,C >[d]2r2rk1/p3bb1p/2n1Q1p1/q2pP3/3P1P2/p1NB1NR1/1P4P1/1K1R4 w - - 0 1 ;bm Bxg6! Chessmaster 9000, on a P4-2.4, chooses Bxg6 in 1:07, and needs 3:43 to give it a positive score: Time Depth Score Positions Moves 0:00 1/4 -1.88 9859 1.Qh3 axb2 2.Bf5 Qa1+ 3.Kc2 Rb8 0:00 1/4 -1.73 14844 1.Qd7 axb2 2.Na2 Qa3 3.Bb5 0:00 1/5 -3.26 52623 1.Qd7 axb2 2.e6 Qa1+ 3.Kc2 Nxd4+ 4.Kd2 b1=N+ 5.Nxb1 Bb4+ 6.Ke3 Bxe6 0:00 1/5 -3.01 113233 1.Qg4 axb2 2.e6 Qa1+ 3.Kc2 Nxd4+ 4.Nxd4 Rxc3+ 5.Kd2 Qc1+ 6.Ke2 0:01 1/6 -3.25 197605 1.Qg4 Rb8 2.Bb5 Rxb5 3.Nxb5 Qxb5 4.Rd2 Qf1+ 5.Kc2 Nb4+ 6.Kb3 Qc4+ 7.Ka4 axb2 8.Rxb2 Qa6+ 9.Kb3 0:08 1/7 -5.52 1322463 1.Qg4 axb2 2.Bf5 Qa1+ 3.Kc2 Nb4+ 4.Kd2 Rxc3 5.Rb1 Qa3 6.Qh3 0:10 1/7 -3.26 1714089 1.Qd7 axb2 2.e6 Qa1+ 3.Kc2 Nxd4+ 4.Kd2 b1=N+ 5.Nxb1 Bb4+ 6.Ke3 Bxe6 0:16 1/8 -3.52 2774167 1.Qd7 axb2 2.e6 Qa1+ 3.Kc2 Nxd4+ 4.Kd2 b1=N+ 5.Nxb1 Bb4+ 6.Ke3 Bxe6 7.Qb7 Bc5 0:39 1/9 -3.95 6773521 1.Qd7 axb2 2.e6 Qa1+ 3.Kc2 Nxd4+ 4.Kd2 Rxc3 5.exf7+ Rxf7 6.Qe8+ Bf8 7.Bb1 Nxf3+ 8.gxf3 Qa3 1:07 1/9 -2.30 11974775 1.Bxg6 Bxe6 2.Bxh7+ Kh8 3.Rh1 Bh3 4.Bf5 Bh4 5.Nxh4 a2+ 6.Nxa2 1:34 1/10 -0.49 17055292 1.Bxg6 Bxe6 2.Bxh7+ Kh8 3.Rh1 a2+ 4.Nxa2 Rxf4 5.Bf5+ Bh4 6.Nxh4 Rf1+ 7.Rxf1 Nxd4 8.Ng6+ Kg7 3:43 2/11 1.16 42310420 1.Bxg6 Bxe6 2.Bxh7+ Kh8 3.Rh1 a2+ 4.Nxa2 Bh4 5.Rxh4 Rxf4 6.Rxf4 Qa6 7.Bc2 Qf1+ 8.Nc1 jm
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