From d2737cb1b780127ab60211ad02b1b778bf6714af Mon Sep 17 00:00:00 2001 From: Mario Lang Date: Sun, 22 Feb 2004 23:40:27 +0000 Subject: (chess-eval-static): Primitive mobility handling, makes play a lot more aggressive :) --- chess-ai.el | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/chess-ai.el b/chess-ai.el index 7aeabe8..55e31f5 100644 --- a/chess-ai.el +++ b/chess-ai.el @@ -102,6 +102,18 @@ reply moves. You can only specify the search depth (see `chess-ai-depth')." (* (length (chess-pos-passed-pawns position nil black-pawns)) chess-ai-passed-pawn)))) + ;; Mobility + (setq v (+ v + (- (length (append (chess-legal-plies position :piece ?Q) + (chess-legal-plies position :piece ?R) + (chess-legal-plies position :piece ?B) + (chess-legal-plies position :piece ?N)) + ) + (length (append (chess-legal-plies position :piece ?q) + (chess-legal-plies position :piece ?r) + (chess-legal-plies position :piece ?b) + (chess-legal-plies position :piece ?n)) + )))) (if (chess-pos-side-to-move position) v (- v))))))) -- cgit v1.2.3