Speed up computer thinking, fix Zen ep

[vchess.git] / public / javascripts / base_rules.js

diff --git a/public/javascripts/base_rules.js b/public/javascripts/base_rules.js
index b604e79..d8ec34a 100644 (file)
--- a/public/javascripts/base_rules.js
+++ b/public/javascripts/base_rules.js
@@ -98,6 +98,7 @@ class ChessRules
                                j++;
                        }
                }
+               // TODO: since we keep moves stack, next 2 are redundant
                let epSq = undefined;
                if (fenParts[2] != "-")
                {
@@ -838,8 +839,7 @@ class ChessRules
 
        alphabeta(color, oppCol, depth, alpha, beta)
   {
-               const moves = this.getAllValidMoves(color);
-               if (moves.length == 0)
+               if (!this.atLeastOneMove(color))
                {
                        switch (this.checkGameEnd(color))
                        {
@@ -849,6 +849,7 @@ class ChessRules
                }
                if (depth == 0)
       return this.evalPosition();
+               const moves = this.getAllValidMoves(color);
     let v = color=="w" ? -1000 : 1000;
                if (color == "w")
                {