Author: Benny Antonsson
Date: 19:33:14 01/15/02
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On January 15, 2002 at 22:10:11, John Merlino wrote: >On January 15, 2002 at 21:09:29, Benny Antonsson wrote: > >>I was confused when I saw Alarm 0.89 play Bd6 in this position: >>[D]r1bqk1nr/pppp1p1p/2n3p1/1B6/1b1NP3/2P5/PP3PPP/RNBQK2R b KQkq - 0 1 >>It seemes to cramp the black position? Is Be3 the problem after Bc5? Is Be7 >>playable? What other programs play Bd6? > >Am I correct in thinking that the last two moves were: > >5...Bb4 >6.c3 > >If this is the case, then the problem comes more from the fact that 5...Bb4 was >played, rather than 5...Bg7. Why else would g6 have been played? > >If you take back those two (theoretical) moves from the above position, there >are many games I have found that have that position in them, and in every game >Bg7 was played. > >jm Yes... you are right... here is the start of the game: 1.e4 e5 2.Nf3 Nc6 3.Bb5 g6 4.d4 exd4 5.Nxd4 Here I checked Alarms openingbook: Size of openingbook: 305.463 positions Number of lines in this position: 1 ECO: [C60 Ruy Lopez: fianchetto (Smyslov/Barnes) defence] ---------------------------------------------------------------------------- Move n % Win Draw Loss White Black TPR Prob ---------------------------------------------------------------------------- Bg7 2 25.00% 0 1 1 2000 2000 1833 0.00% The first problem is that there were to few games played with this position in the pgn-file I used to create the openging book... and the second problem is why Alarm isn't playing the obvious Bg7 when it starts thinking... neither Crafty or ChessMaster does, and I assume these programs also have knowledge about the fianchettoed bishop ?
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