Author: Sune Larsson
Date: 03:42:01 03/01/01
Go up one level in this thread
On February 28, 2001 at 19:01:46, Enrique Irazoqui wrote: >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 I played this position vs Deep Fritz: Deep Fritz - Larsson Nivå=Blitz:25'. KIL, 01.03.2001 27MB, Nz7book.ctg. PIII 800 1...Rd2 2.Rxb6+ 1.47/14 1:00 Kg5 3.Ke1 1.47/13 26 Rc2 4.h3 1.34/14 48 Kh4 5.a4 1.34/14 29 Kxh3 6.a5 1.25/15 48 f4 7.a6 1.31/14 29 Rc1+ 8.Kd2 1.28/15 19 Ra1 9.Rf6 1.34/14 21 Kg4 10.Ke2 0.72/15 0 h5 11.Rg6+ 0.19/15 0 Kf5 12.Rd6 0.16/14 54 h4 13.b4 0.00/13 13 h3 14.Rh6 0.00/15 41 Kg4 15.b5 0.00/16 0 e3 16.fxe3 0.00/16 38 f3+ 17.Kf2 0.00/17 30 Ra2+ 18.Kg1 0.00/16 1:14 Ra1+ 19.Kf2 0.00/21 27 Ra2+ 20.Kg1 0.00/16 21 Ra1+ 21.Kf2 0.00/21 25 ½-½ Sune
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