fix bug mate in draw

geko · geko · commit 157c552e8506 · 2016-05-02T09:36:09.000+02:00
diff --git a/src/Search.cpp b/src/Search.cpp
@@ -408,15 +408,12 @@ int Search::search(int depth, int alpha, int beta, _TpvLine *pline, int N_PIECE,
     int extension = 0;
     int is_incheck_side = inCheck<side>();
     if (!is_incheck_side && depth != mainDepth) {
-        if (checkInsufficientMaterial(N_PIECE)) {
+        if (checkInsufficientMaterial(N_PIECE) || checkDraw(chessboard[ZOBRISTKEY_IDX])) {
             if (inCheck<side ^ 1>()) {
                 return _INFINITE - (mainDepth - depth + 1);
             }
             return -lazyEval<side>() * 2;
         }
-        if (checkDraw(chessboard[ZOBRISTKEY_IDX])) {
-            return -lazyEval<side>() * 2;
-        }
     }
     if (is_incheck_side) {
         extension++;

Original file line number	Diff line number	Diff line change
`@@ -408,15 +408,12 @@ int Search::search(int depth, int alpha, int beta, _TpvLine *pline, int N_PIECE,`
`408`	`408`	`int extension = 0;`
`409`	`409`	`int is_incheck_side = inCheck<side>();`
`410`	`410`	`if (!is_incheck_side && depth != mainDepth) {`
`411`		`- if (checkInsufficientMaterial(N_PIECE)) {`
	`411`	`+ if (checkInsufficientMaterial(N_PIECE) \|\| checkDraw(chessboard[ZOBRISTKEY_IDX])) {`
`412`	`412`	`if (inCheck<side ^ 1>()) {`
`413`	`413`	`return _INFINITE - (mainDepth - depth + 1);`
`414`	`414`	`}`
`415`	`415`	`return -lazyEval<side>() * 2;`
`416`	`416`	`}`
`417`		`- if (checkDraw(chessboard[ZOBRISTKEY_IDX])) {`
`418`		`- return -lazyEval<side>() * 2;`
`419`		`- }`
`420`	`417`	`}`
`421`	`418`	`if (is_incheck_side) {`
`422`	`419`	`extension++;`