Author: Uri Blass
Date: 05:07:20 02/22/04
Go up one level in this thread
On February 22, 2004 at 04:56:31, Tim Foden wrote: >GLC and LG 2000v3 played a match last night. One of the games that I watched >acheived this position: > >[D]r5k1/1p2qpp1/1p2b1n1/1Pp1p2p/r1PpP2P/P2QPPP1/1BR3B1/3R2K1 w - - 4 27 > >GLC statically evaluates this position as +0.591 (for white). I believe this is >badly wrong. To me (a patzer) black looks to have all the advantages... GLC >went on to lose this game. > >Blacks rook on a4 is simultaneously attacking 2 weak pawns. >Black has more space in the centre. >Blacks bishop is better placed, and is not "bad", and is also attacking a weak >pawn. >Blacks king safety looks OK. > >White has a rook and queen pinned down to defending a weak pawn. >Whites queen is doing work blockading a pawn. >There is space around the white king. >2 of the white kings pawns are weak. >The potential for attacking the white king is high (3 potential attacking >pieces). >Whites light square bishop looks quite "bad" > >In general blacks piece mobility looks much better than whites. > >I belive this should be evaluated as at least 1/2 pawn in favour of black, maybe >more. What do other progs evaluations say? > >Cheers, Tim. I see +0.15 at depth 1 but the interesting information is that even after a long search to depth 15 I still see a small advantage for white of +0.11 I expect a big positional advantage to be translated after a long search to positional advantage that the program understands and I suspect that if it can see nothing the position is equal. Here is movei's analysis in the last plies. 14 12 141403 231863336 g2f1 a8d8 d1e1 e7f6 f1g2 a4a8 d3b3 e6d7 e3d4 e5d4 f3f4 d 7g4 e4e5 f6e7 14 12 147261 242317975 g2f1 a8d8 d1e1 e7f6 f1g2 a4a8 d3b3 e6d7 e3d4 e5d4 f3f4 d 7g4 e4e5 f6e7 15 0 235328 393203130 g2f1 e7f6 f1g2 f6e7 15 1 268526 441914006 f3f4 15 0 271951 447143549 g2f1 e7f6 f1g2 f6e7 15 1 328505 527337037 g1h2 15 0 396784 628798546 g2f1 e7f6 f1g2 f6e7 15 1 427540 679129704 d1e1 15 3 450997 716674084 d1e1 e7d7 g1h2 a8d8 d3b3 a4a8 e1c1 f7f6 c2d2 d7f7 d2d3 d4 e3 d3e3 d8d2 e3c3 15 4 483394 767431082 d1c1 15 11 558451 887196947 d1c1 e7d7 g2f1 f7f5 c2h2 a8f8 d3b3 a4a8 f1d3 a8d8 c1e1 d 4e3 e1e3 f5f4 g3f4 g6f4 15 11 569388 905375633 d1c1 e7d7 g2f1 f7f5 c2h2 a8f8 d3b3 a4a8 f1d3 a8d8 c1e1 d 4e3 e1e3 f5f4 g3f4 g6f4 Uri
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