Author: Enrique Irazoqui
Date: 16:01:46 02/28/01
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On February 28, 2001 at 14:33:56, Sune Larsson wrote: > > [D]3r4/7p/Rp4k1/5p2/4p3/2P5/PP3P1P/5K2 b - - 0 1 > > This is Tarrasch-Rubinstein, San Sebastian 1911. > Black is a pawn down and the b6 pawn is under attack. Passive > defence with 1.-Rd6 or 1.-Rb8 is doomed to failure. Rubinstein > grasps his only chance: To mobilize his rook and king. > Activity is vital in rook endings. > > 1.-Rd2! 2.Rxb6+ Kg5 3.Ke1 [3.a4 f4 4.a5 f3! is more than welcome to black.] > 3.-Rc2 4.Rb5 Kg4! 5.h3+ Kxh3 6.Rxf5 Rxb2 and black drew without effort. > > > Test: Big + for your program if it chooses 1.-Rd2! combined with > activating the king. > > Thumbs down if it chooses passive defence with 1.-Rd6 or 1.-Rb8. > > Sune Thumbs down for Deep Shredder and Deep Fritz then. But I'm not so convinced about Rd2. I'll take a longer look at it tomorrow. Enrique
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