Author: Uri Blass
Date: 15:58:23 03/03/03
Go up one level in this thread
On March 03, 2003 at 18:06:09, Matthew White wrote: >On March 03, 2003 at 17:02:36, Dann Corbit wrote: > >>On March 03, 2003 at 16:42:05, Albert Bertilsson wrote: >> >>>Hi! >>> >>>Warning! This is probably very easy for most of you with an intrest in chess, >>>for anybody like me (intrested in programming, bad chess player) it could be >>>something to think about though... >>> >>>Sharper put itself in this position: >>> >>[d]2k4r/2p5/6RB/4qp1Q/7P/P3P3/3r3P/R5K1 w - - >>> >>>With little time to think it made the bad move Qf5. Giving a second more it >>>found Qf3. Since I could not believe that Sharper would lose that game (the 20 >>>latest moves it had a quite nice advantage I simply couldn't understand what >>>happened. Then I gave the position to crafty and saw how bad it thought the >>>position was. After looking at it very carefully I also understood what the >>>catch was. >>> >>>Can you see it too? >>> >>>/Regards Albert >Just by looking at the position, it appears to me that Qxf5+ leads to rapid >mate, since the black rook on the second rank traps the king. > >Matt The question is what is the reason to play Qxf5+ and the answer is that the queen is lost in any case. I guess that the point is that weak players may miss Qxa1+ at first looking(after seeing it the rest including winning the queen is easy to see). I admit that I also missed it in the first seconds because I look at Qf3 Qxh2+ and my Israeli rating for tournament time control(eqvivalent to fide rating) should be 2030 if I do not play more games. I did not use a clock to find time but I guess that it took me something like 30 seconds to see Qxa1+ because in the first seconds I analyzed Qxh2+ and saw nothing good for black. The point is that for humans it is rleatively hard to see long moves. Maybe it is easier to see it when you see that the last move is Qe5 because if you see the move than you ask yourself what is the threat of the piece that moved Uri
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