Author: Mark Young
Date: 06:34:43 09/28/03
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On September 28, 2003 at 04:38:08, Kurt Utzinger wrote: >On September 28, 2003 at 00:15:02, Mark Young wrote: > >>H. Pillsbury - Em. Lasker >>After whites 17 move of f5 >> >>[D]2r2rk1/pp3pp1/4bb1p/q2p1P1Q/3P4/2N5/PP4PP/1K1R1B1R b - - 0 1 >> >>Here GM Kasparov gives 17..Rxc3 a (!!) mark. With the comment that the move >>Rxc3!! is beyond the powers of even a strong computer. >> >>Is Rxc3 really beyond the powers of a strong computer? Or is the move Rxc3 not >>worthy of a (!!) because it leads only to a draw. This is what the computers see >>after blacks 17..Rxc3. > > > I do not think that 17...Rxc3 will be played by > any computer program. And by the way: I have still > not found a win for Black in the following line: > > [Event "40'/40+40'/40+40'"] > [Site "MyTown"] > [Date "????.??.??"] > [Round "?"] > [White "Neue Partie"] > [Black "?"] > [Result "1/2-1/2"] > [SetUp "1"] > [FEN "2r2rk1/pp3pp1/4bb1p/q2p1P1Q/3P4/2N5/PP4PP/1K1R1B1R b - - 0 1"] > [PlyCount "23"] > [TimeControl "40/2400:40/2400:2400"] > > 1... Rxc3 2. fxe6 Ra3 3. bxa3 Qb6+ 4. Kc2 Rc8+ 5. Kd2 Qxd4+ > 6. Ke1 Qc3+ 7. Ke2 Qc2+ 8. Rd2 Qe4+ 9. Kd1 Qb1+ 10. Ke2 Qe4+ > 11. Kd1 Qb1+ 12. Ke2 Qe4+ 1/2-1/2 I came to the same conclusion. I don't think there is a win after Rxc3 with best defense. This is why computer will not play the move. Computers see Bd7 holding a much better advantage. And it seems the computers are correct.
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