Author: Jeremiah Penery
Date: 01:53:09 01/25/00
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On January 24, 2000 at 16:06:48, Dann Corbit wrote: >These positions in BS2830 were analysed by Crafty at C.A.P. time controls, and >we got the wrong answer. So I reanalyzed them at long time controls, and >*still* got the wrong answer. I have not tried with Hiarcs or Rebel yet. Does >anyone have good EPD results for these? If so, what was the program used and >what was the time control? Yes, those node counts are over one Billion! > >r1bq1rk1/pp4bp/2np4/2p1p1p1/P1N1P3/1P1P1NP1/1BP1QPKP/1R3R2 b - - acd 15 acn >1408945135; ce 67; pv Bg4 Ncd2 Qd7 Qe3 Bh3+ Kg1 Bxf1 Rxf1 g4 Nh4 Nd4 c4 Qe7 Bxd4 >exd4 Qe2 Qe6; pm Bg4; bm Bh3+; am Kom, 197; id "BS2830.03"; I've been analyzing this one a while. I'm not totally convinced that Bh3+ is the best move. It may end in only a draw. After the forced 1. ...Bh3 2. Kxh3 g4+ 3. Kxg4, we have Qd7+ 4. Kh4 Bf6+ 5. Ng5 Bxg5+ 6. Kxg5 Rf6 7. Qh5 Qg7+ 8. Kh4 Rh6 9. f4! Rxh5 10. Kxh5 Qg6+ 11. Kh4 Qh6+ 12. Kg4. This line isn't totally forced, but some stuff transposes into it. It's pretty unclear now. I'm not exactly sure what to play. We can try: 12. ...Qxh2 13. Nxd6 h5+ 14. Kf3 exf4 15. gxf4 Qxc2 16. Rg1+ Kf8 17. Bg7+ Ke7 18. Nf5+ Kf7 19. Nd6+ Ke6 20. Ke3 Nb4 21. Be5 Qxd3+ 22. Kf2 Qd2. Now it becomes quite hard. 23. Kf1 Qc2 24. Rg6+ Kd7 25. Rb2 Qc1+ 26. Ke2 Nc2 27. Rg7+ Kc6 28. Nxb7 Qe1+ 29. Kf3, and now black must give a perpetual, or white is winning. E.g., Qe3+ 30. Kg2 a5 31. Nxc5 Qe2+ 32. Kh3 Rc8 33. Nb7, etc. Can someone find better moves for black? Perhaps somewhere around moves 12-15, especially, I think there may be something better. Jeremiah
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