Author: Uri Blass
Date: 10:41:33 02/05/01
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On February 05, 2001 at 12:59:27, Thomas Lagershausen wrote: >The following position is first published in 1993 by an forgotten austrian >computerchessmagazine called "modul" and later "pc schach". >I am shure it´s to difficult for any current chessprograme, but let´s have a >look.The white position is won, but the way to show this is to play Re6!. >Which programe have a positive score by showing Re6! on his screen? >CM 8000 shows nothing after an overnight analysis.Shredder 5 and Yace 0.99 only >kingmoves.I know one programe that will play Re6! but the evaluation is negative >and the variation looks like an loosingline.But it´s interesting to see this by >an very famous programe.I would say a programe that wins against best defence >this position is a grandmaster. > >[Event "3/93-63 MR-Test2 17 "] >[Site "?"] >[Date "1792.??.??"] >[Round "?"] >[White "Makagonov "] >[Black " Kasparjan"] >[Result "1-0"] >[SetUp "1"] >[FEN "2bq1b2/1p3k2/1r1p1p1p/pNpP1PpP/P1P3P1/6B1/7Q/2K1R3 w - -"] > >1. Re6 Bxe6 2. fxe6+ Ke8 (2... Kg8 3. Qc2 Qe8 4. Be1 Qe7 >5. Bc3 Qg7 6. Qf5 Be7 7. Na7 Rb3 (7... Qf8 8. Nc8 Qxc8 >9. Qg6+ Kh8 10. Bxf6+ Bxf6 11. Qxf6+ Kh7 12. Qg6+ Kh8 >13. e7 Rb4 14. e8=Q+) 8. Kc2 Ra3 9. Nc8 Kf8 10. Qg6 Qxg6+ >11. hxg6 Bd8 12. Nxd6 Rxa4 13. Nxb7 Bb6 14. Bxf6 Rxc4+ >15. Kd3 (15. Kd3 Rxg4 16. e7+ Ke8 17. Nd6+ Kd7 18. e8=Q+ >Kxd6 19. Qc6#)) 3. Qc2 f5 4. Qxf5 Qe7 5. Qg6+ Kd8 6. Be1 with the threads Ba5: >and Bc3 1-0 > >Thomas Lagershausen Crafty17.14 has no problem to find Re6 in a short time because it does not like closed positions. The main line at depth 17,18 begins with 1.Re6 Bxe6 2.fxe6+ Kg8 3.Qc2 Qe7( evaluation 0.94 for black) I do not care if the rest of the line is good for white because it is clear that the main line of chess programs is not good when you go a lot of moves forward. Uri
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