Author: Uri Blass
Date: 02:55:29 08/15/00
Go up one level in this thread
On August 15, 2000 at 03:15:50, Ed Schröder wrote: >On August 14, 2000 at 19:11:45, Olaf Jenkner wrote: > >>On August 14, 2000 at 08:43:08, Enrique Irazoqui wrote: >> >>>This one is a MES position: >>> >>>[D]3B4/1r2p3/r2p1p2/bkp1P1p1/1p1P1PPp/p1P1K2P/PPB5/8 w - - 0 1 >>> >>>After 6.f5, all programs I tried evaluate it from +11 to +17. >>> >>>Enrique >>> >>>[Event "?"] >>>[Site "?"] >>>[Date "????.??.??"] >>>[Round "?"] >>>[White "MES.941"] >>>[Black "?"] >>>[Result "*"] >>>[SetUp "1"] >>>[FEN "3B4/1r2p3/r2p1p2/bkp1P1p1/1p1P1PPp/p1P1K2P/PPB5/8 w - - 0 1"] >>>[PlyCount "11"] >>> >>>1. Ba4+ Kxa4 2. b3+ Kb5 3. c4+ Kc6 4. d5+ Kd7 5. e6+ Kxd8 6. f5 * >> >>The computer does not have to see the draw to solve this study. >>The solution can be found, when all other moves give a worse >>evaluation. >>To find the value of the drawn position I analysed the position >>after 1.Bxa4+ Kxa4 2.b3+ Kb5 3.c4+ Kc6 4.d5+ Kd7 5.e6+ Kxd8 : > >There is another side effect you seem to forget. Black might for >instance Rc6 and I am pretty sure comps will capture the rook and >white will lose after all. > >Ed I believe that programs that can see deep enough to find 5.e6+ can also see deep enough to avoid taking the rook at c6. The main problem is that crafty after a lot of hours cannot find 5.e6 and prefers the losing 5.Bxa5. Uri
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