Author: Slater Wold
Date: 16:03:00 08/21/01
Go up one level in this thread
On August 21, 2001 at 14:24:06, Torstein Hall wrote: >I resently saw a game in a local newspaper where one of the players "improved" >on the opening theory in the following position. > >NN - NN >Bergen Open 2001 > >1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 e6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Be2 a6 9.e4 >b4 10.e5 bxc3 11.exf6 Bb4 TN This move was presented as an improvment over >normal theory! The reason behind the move was as follows. If 12.fxg7+ then c2+!! >and black is winning easily. > >[D]r1bqk2r/3n1ppp/p1p1pP2/8/1b1P4/2p2N2/PP2BPPP/R1BQK2R w KQkq - 0 > >Of course white can not be that naive, but plays 12.0-0 Nxf6 and we reach the >critical position 1. > >[D]r1bqk2r/5ppp/p1p1pn2/8/1b1P4/2p2N2/PP2BPPP/R1BQ1RK1 w kq - 0 13 > >Can your program find the best move here? >Some computer attempts: > >Crafty at ply 12 gives: 13.Qa4?! with a score of - 0.17 (Black is better) > >Hiarcs 7.32:Likes 13.Ne5?! with -0.5 score > >Fritz comes up with the correct move at ply 12 but can not see that white has a >large advantage!: 13.bxc3! > >OK lets continue: > >13.bxc3 Bxc3 If 13...Be7 black play the normal variation with a tempo missing. > >(The real)Critical position 2: >[D]r1bqk2r/5ppp/p1p1pn2/8/3P4/2b2N2/P3BPPP/R1BQ1RK1 w kq - 0 14 > >What to play with white? > >Fritz want to play: Rb1?! at ply 13 >Hiarcs also likes Rb1 >Crafty goes for the same shit..... > >Can any program within normal tournament time limits find the right move? >And the right answer is: 14.Ba3! > >Here is a typical continuation. 14...Bxa1 15.Qxa1 Bb7 16.Ne5 Qc7 17.Nc4 and now >some computers start to realise that white has the advantage. Let the game >continue: 17...Nd5 18.Nd6+ Kd8 19.Qb2 Bc8 20.Rb1 a5 21.Bc5 a4 22.Bc4 > >[D]r1bk3r/2q2ppp/2pNp3/2Bn4/p1BP4/8/PQ3PPP/1R4K1 b - - 0 22 > >..and now even the dullest computer start to see the truth. White has a big >advantage! > >It looks like computer chess has a long way to go before it understand the >consept of a real positional sacrifise. > >Torstein > >PS I guess this is Childrens knowledge for Kramnik. Maybee I should mail him the >game. :-) You are correct. We all know chess computing has a long way to go. However, I let Shredder take a peek at all these positions, and while it did find some moves, it disagree completly with 99% of blacks moves. Bb7 _IS_ too passive, and _NO_ chess engine would _EVER_ play it. a5 & a4 are just as worse. I believe chess engines are not playing these moves, because they rely TOO much on the fact that your opponent will not see your plan. Computers aren't sneaky. They are rather forceful with their plans. Slate
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