Author: scott farrell
Date: 22:03:53 10/25/03
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On October 24, 2003 at 20:35:33, José Carlos wrote: > From a test game of my engine Anubis: > >[D]r1b5/pp1p3k/1b1p4/5R2/4PB2/2N4r/PP3n1P/1K4R1 b - - 7 30 > > It seems that only Nd3 draw, according to Ruffian. My program lost this game >(with black). It seems very hard for it to find the drawing move (it wants to >play Kh8 for a long time), although I believe most programs will find it easier. > What do your engines say? Do other moves also draw? > > José C. It mostly depends on how you score a draw. Crafty eventually says Nd3 also with a draw score. My engine chompster sees white attempting a draw due to contempt factor, and +0.5 for white as a draw, with black playing Bd4 - and black cant stop a forced draw by white - which with contempt factor says its a win to white that black cant stop. This is good if the player on white has less rating, which is the idea of the contempt fator, they will probably just go for the draw (as I would against a comp). This probably means a few moves before this my engine may have avoided this position given it was heading towards a draw. your positional scores for the bad bishop and bad rook vs more material for black will have a huge effect on whether it keeps or discards branches with draws in them. playing with my contempt factor, it sees ND3, or Bd4 - it really depends who its thinks is ahead, and which player might be trying for a draw, given wither side can force a draw (and for a bit Nxe4 as a draw, but then sees white wins on the next ply). Scott
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