Author: Mike Byrne
Date: 18:36:49 06/08/03
Go up one level in this thread
On June 08, 2003 at 20:41:42, Dave Kuntzsch wrote: >Just got a new computer that is large enough to hold the five piece table bases. >Do they appreciably improve ELO if the program is already relatively strong? Or >are they only good for tricky endings that occur infrequently? Has anyone done a >same engine study with one using the four piece, and the other the five piece? >I'm currenty downloading them, just in case. > >Dave They hardly make a difference in actual game play. But they are very neat for analysing endgame play of GM's. Top GM's play 5 man endgames perfectly. Lessor GM's do not. You can over these games and see exactly where they the weaker GM threw a book draw to a book loss - and top GM's will get that win everytime once that mistake is made. In a spot check of about 50 games that were krpkr and a scroe of 1-0 or 0-1 over the last 18 months, I found 5 games that were dead draw and then a mistake was made and the other side converted to a win. Below is such example. Beliavsky,A (2638) - Ribli,Z (2545) [D19] Ch team Bled SLO (3), 2001 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Bf5 6.e3 e6 7.Bxc4 Bb4 8.0-0 Nbd7 9.Qe2 0-0 10.e4 Bg6 11.Bd3 Bh5 12.e5 Nd5 13.Nxd5 cxd5 14.Qe3 Be7 15.Bd2 Nb8 16.Ne1 Bg6 17.f4 Nc6 18.g4 f5 19.exf6 Bxf6 20.Bc3 Qe8 21.h3 Kh8 22.Rd1 Rc8 23.Rd2 Bd8 24.Re2 Bb6 25.Kg2 Bxd3 26.Nxd3 Qg6 27.Nc5 e5 28.fxe5 Bxc5 29.dxc5 h5 30.Rf4 Qe6 31.Ref2 Rxf4 32.Rxf4 hxg4 33.Rxg4 Rf8 34.Qg5 Rf7 35.Qh5+ Kg8 36.Rg6 Qf5 37.Qxf5 Rxf5 38.Rd6 d4 39.Bxd4 Nxd4 40.Rxd4 Rxe5 41.Rb4 Rxc5 42.Rxb7 Kh7 43.Kf3 Rh5 44.Kg4 Rd5 45.b3 Rd4+ 46.Kg5 Rd3 47.Kg4 Rd4+ 48.Kf3 Rd3+ 49.Ke4 Rxh3 50.a5 Kh6 51.a6 g5 52.b4 Rb3 53.Kf5 Rf3+ 54.Kg4 Rf6 55.b5 Rf4+ 56.Kg3 Rb4 57.Rb8 Ra4 58.Kf3 g4+ 59.Ke3 g3 60.Kf3 Ra3+ 61.Kg2 Kg5 62.Kh3 Kf4 63.Rf8+ Ke3 64.Rf7 Ra5 65.Rxa7 Rxb5 66.Ra8 Re5 67.Kxg3 Re6 68.Kh4 Kf4 69.Rf8+ 1-0 [d] R7/8/P3r3/8/7K/4k3/8/8 b - - 0 68 68...Ke4 or Re7 keeps the draw, 68...Kf4?? loses
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