Author: Richard Pijl
Date: 00:44:47 01/24/03
Go up one level in this thread
On January 23, 2003 at 23:16:28, K. Burcham wrote: > >In this position Kasparov played 21.Bxg7 with a loss of material. >Kasparov thought this was a positional gain losing the bishop. >First question: will the programs agree with Kasparov and sac the bishop? > [D] 2r2rk1/p1q1bpp1/1p6/n2R4/8/P4N2/1B2QPPP/5RK1 w - - > The Baron doesn't sac the bishop (P3-500): ply time nodes score pv 5( 8)& 0 15705 60 f1e1 f8e8 b2e5 c7c6 d5d7 5(11). 0 37693 60 f1e1 f8e8 b2e5 c7c6 d5d7 6(12)& 0 62687 41 f1e1 f8e8 f3e5 e7g5 b2d4 g8h8 6(13)& 1 136851 57 f1c1 c7b7 c1d1 f8e8 f3e5 f7f6 6(13). 2 192952 57 f1c1 c7b7 c1d1 f8e8 f3e5 f7f6 7(15)& 4 336705 60 f1e1 f8e8 b2e5 c7c6 d5d3 c6a4 f3d4 7(17). 8 654781 60 f1e1 f8e8 b2e5 c7c6 d5d3 c6a4 f3d4 8(18)& 11 935063 53 f1e1 f8e8 b2e5 c7b7 e2d3 e8d8 d5d8 c8d8 f3d4 f7f6 8(19). 31 2478960 53 f1e1 f8e8 b2e5 c7b7 e2d3 e8d8 d5d8 c8d8 f3d4 f7f6 9(21)& 61 4651128 64 f1e1 f8e8 d5e5 a5c6 e5e4 c8d8 e4g4 9(21). 224 15963845 64 f1e1 f8e8 d5e5 a5c6 e5e4 c8d8 e4g4 10(21)& 310 22156100 56 f1e1 f8e8 d5e5 a5c6 e5e4 c7d7 f3g5 d7f5 e2h5 10(22)& 783 53174386 74 e2e4 f8e8 e4g4 e7f8 d5d7 c7c4 g4f5 10(22)& 1146 78600055 78 f3h4 e7h4 e2g4 f7f6 d5d7 c7d7 g4d7 c8c2 b2d4 10(22). 1167 80079532 78 f3h4 e7h4 e2g4 f7f6 d5d7 c7d7 g4d7 c8c2 b2d4 > >I assume Kasparov could see this line, and the position after this line is >played. >You can see that Kasparov is down in material with the bishop loss. >Second question: do the programs agree after this line that the position is >better for Kasparov with the loss of material? >position after this line 21. Bxg7 Kxg7 22. Ne5 Rfd8 23. Qg4+ Kf8 > [D] 2rr1k2/p1q1bp2/1p6/n2RN3/6Q1/P7/5PPP/5RK1 w - - The Baron agrees that white is (much) better here: ply time nodes score pv 3( 8). 0 11079 -2 e5d7 d8d7 d5d7 e7a3 4( 8)& 0 12743 27 e5d7 d8d7 d5d7 c7b8 g4g8 f8g8 d7e7 4(11). 0 37013 27 e5d7 d8d7 d5d7 c7b8 g4g8 f8g8 d7e7 5( 9)& 0 42180 23 e5d7 d8d7 d5d7 c7b8 f1e1 e7a3 5(14). 1 99039 23 e5d7 d8d7 d5d7 c7b8 f1e1 e7a3 6(14)+ 1 116566 58 e5d7 d8d7 d5d7 c7b8 f1e1 e7a3 d7a7 6(16)& 2 155923 59 e5d7 d8d7 d5d7 c7c2 g4g8 f8g8 d7c7 6(16). 5 351978 59 e5d7 d8d7 d5d7 c7c2 g4g8 f8g8 d7c7 7(19)& 7 538990 56 e5d7 d8d7 d5d7 c7c3 d7a7 c8d8 f1d1 e7a3 7(19). 30 2147178 56 e5d7 d8d7 d5d7 c7c3 d7a7 c8d8 f1d1 e7a3 8(19)& 40 2846375 61 e5d7 d8d7 d5d7 c7c3 d7a7 e7a3 f1d1 8(21). 85 6170905 61 e5d7 d8d7 d5d7 c7c3 d7a7 e7a3 f1d1 9(22)& 113 8151823 48 e5d7 d8d7 d5d7 c7c3 d7a7 e7a3 g4f4 c3g7 f4f5 c8e8 a7d7 9(22). 386 27280939 48 e5d7 d8d7 d5d7 c7c3 d7a7 e7a3 g4f4 c3g7 f4f5 10(22)+ 412 29139562 83 e5d7 d8d7 d5d7 c7c3 d7a7 e7a3 a7d7 c3c4 g4f5 10(23)& 559 39130836 126 e5d7 d8d7 d5d7 c7c4 g4h5 c4h4 h5h4 e7h4 d7a7 a5c6 a7d7 > > >[Date "1983"] >[White "Kasparov, G"] >[Black "Portisch, L"] >[Result "1-0"] >[ECO "E12"] > >1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. Nc3 Bb7 5. a3 >d5 6. cxd5 Nxd5 7. e3 Nxc3 8. bxc3 Be7 9. Bb5+ >c6 10. Bd3 c5 11. O-O Nc6 12. Bb2 Rc8 13. Qe2 >O-O 14. Rad1 Qc7 15. c4 cxd4 16. exd4 Na5 17. d5 >exd5 18. cxd5 Bxd5 19. Bxh7+ Kxh7 20. Rxd5 Kg8 21. Bxg7 >Kxg7 22. Ne5 Rfd8 23. Qg4+ Kf8 24. Qf5 f6 25. Nd7+ >Rxd7 26. Rxd7 Qc5 27. Qh7 Rc7 28. Qh8+ Kf7 29. Rd3 >Nc4 30. Rfd1 Ne5 31. Qh7+ Ke6 32. Qg8+ Kf5 33. g4+ >Kf4 34. Rd4+ Kf3 35. Qb3+ 1-0 > >kburcham
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