Author: Mike Byrne
Date: 18:41:16 06/08/03
Go up one level in this thread
On June 08, 2003 at 21:36:49, Mike Byrne wrote: >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 These 50 games were games where both players were rated over 2500, you will find a many more mistakes in lessor rated player's games.
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