Author: Madhavan
Date: 01:28:46 06/13/05
Go up one level in this thread
On June 13, 2005 at 04:22:01, Michael Diosi wrote: > > >Hello, > >The only winning move for black is b1B right,very interesting position,I wonder where you got those position? is this position there in a test suite? but you can't test engines on illegal position with direct checks,hitting kings and position having 32 or 22 knights >so now you understand that this engine has a problem with > >a) underpromotion >b) it sees a mate which is not there >c) move ordering/move selection some engines do,top engine doesnt have >so this helps the author fix it but it also helps us to understand how this >engine operates. Your task is to find an engine which does this, this would be >helpful. allright. >Just in case you wonder here is the output of another engine: >FEN: 8/8/5b2/8/K7/8/kp6/3N4 b - - 0 63 > >FEN: 8/8/5b2/8/K7/8/kp6/3N4 b - - 0 63 > >Queen 3.05: > 1 00:00 2 0 -10.86 b1Q > 2 00:00 24 2 -10.49 > 3 00:00 190 10 -0.05 Ka1 > 3 00:00 270 14 -4.29 > 4 00:00 823 41 -3.99 Ne3 > 5 00:00 2.082 69 -4.05 Nc3+ Kxb2 >Nd5 > 6 00:00 7.327 183 -3.88 Be7 Bd6 > 7 00:00 23.605 337 -3.86 Nf2 Kb3+ > 8 00:00 54.497 454 -3.88 Nf2 Kb3+ > 9 00:00 121.273 551 -3.79 Nf2 Kb1 Kc2 > 10 00:00 425.833 607 -3.85 Kb3+ Ne3+ >Kc3 > 11 00:01 1.064.290 660 -3.81 Kb3+ Ne3+ > 12 00:04 3.058.561 696 -3.85 Nc3+ Kxb2 >Nd5 Bg7 Kc2 Nf4 Nd5 > 13 00:09 6.795.514 710 -3.83 Ne3 Nc4 Bd4 >Nd6 Nb5 Be5 Nc3+ Ka1 Ne4 > 14 00:19 13.964.932 718 -3.92 Kb3+ Nf2+ >Bg7+ Ne4+ Kc2 Bd4 Nc5 > 15 00:38 26.837.017 704 -3.92 Kb3+ Nf2+ >Bg7+ Ne4+ Kc2 Kd3 Ng5 Ne6 > 16 01:16 51.772.693 681 -3.99 Kb3+ Nf2+ >Kc2 Ne4 Be5 Ng5 > > >Look : Kb3+ good move, no ? If you promote the pawn to bishop,can you get the knight later? are there no possibility for black to draw?with one knight vs 2 white bishop? >Best, > >Michael
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