Author: Dieter Buerssner
Date: 19:45:55 03/07/02
[D] 5b1k/3R4/5P2/p1rB4/8/8/6K1/8 b - - I think, this is an interesting position. It is from an ICC game of Shredder 6 vs. Yace. Yace moved a4? and lost fast after this. I have looked at some variations, and the natural looking move a4 indeed seems to be a loss, while Rb5 probably holds the draw. Perhaps I am too naive, but when I watched this game, I first was confident, that it should be a very easy draw. My (stupid?) reasoning was: A computer will not lose KRBKR (when he does not see the exceptional win fast). The position here is KRBPKRBP. The Bs are of opposite color. So, I thought, it should allways be possible, to sac one B for a P, and have an easy draw. Well, I was totally wrong, and so was the knowledge I coded into my engine. How long does your engine need, to avoid a4? How long does it need, to see a convincing winning score after a4? (Kg3 is a forced win, other moves perhaps, too). Regards, Dieter
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