Author: Vincent Diepeveen
Date: 10:03:02 03/01/01
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On February 28, 2001 at 12:16:48, Ed Schröder wrote: >On February 28, 2001 at 08:51:47, Sune Larsson wrote: > >> >> [D]6k1/2p3np/1p1p2p1/3P4/1PPK1R2/6PB/7P/4r3 w - - 0 1 >> >> This is Gelfer-Manievich, Jerusalem 1985. The theme is about >> central supremacy and active king in the endgame. The penetration >> of the king into the enemy camp is many times decisive and often worth >> a pawn. Gelfer bought a ticket for his king to the holy land, in a >> very instructive way: >> >> 1.Be6+! Nxe6 2.dxe6 Rxe6 [The sacrifice has cleared a path for the >> white king. 2.-c6 wouldn't do, owing to 3.b5!] >> 3.Kd5 Re7 4.Kc6 Kg7 5.Rf2 Re4 6.Rc2 Re7 7.b5 Kf6 8.Ra2 Re4 9.Kxc7 Rxc4+ >> 10.Kxb6 d5 11.Ka7 d4 12.b6 Ke5 13.b7 Rb4 14.b8Q+ Rxb8 15.Kxb8 d3 16.Kc7 Ke4 >> 17.Kd6 Ke3 18.Ke5 d2 19.Ra1 Ke2 59.Kf6 d1Q 60.Rxd1 Kxd1 61.Kg7 1-0 Hello Sun, In your line black happily gives away c7 and all other pawns after which white wins easily. Of course computer doesn't fall for those human emotions. I don't need to mention that progs in general and diep especially do not like to give away a pawn to get a rook endgame. Rook endgames hard to judge anyway normally spoken, not to mention in this case. But what if black just runs with its king a bit and leaves the rook on e7? So exchanging a pawn on g5 that's it then threaten to capture the g pawn of white. If you exchange on c7 then i get a queen on h1 quick. Some more analysis would be interesting here to get indication what progs need to see in order to play Be6. Another idea from me here: how about first putting white rook somewhere else and THEN giving away d5 pawn on e6 ? >> Test: The move 1.Be6+! should give a high +score for white. If a program >> plays this move it recognizes the value of entering into the enemy >> camp with the king. (Don't do that in the middlegame ;) >> >> Sune > > >No Be6+ after 10 minutes, I rest my case :( > >Ed
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