Reduce the search margins for Beta Pruning (85 -> 75)

ELO | 2.09 +- 1.69 (95%) SPRT | 10.0+0.10s Threads=1 Hash=8MB LLR | 2.94 (-2.94, 2.94) [0.00, 4.00] Games | N: 50112 W: 7895 L: 7593 D: 34624 http://chess.grantnet.us/test/11524/ ELO | 3.02 +- 2.07 (95%) SPRT | 60.0+0.60s Threads=1 Hash=64MB LLR | 2.98 (-2.94, 2.94) [0.00, 4.00] Games | N: 21840 W: 2314 L: 2124 D: 17402 http://chess.grantnet.us/test/11558/ BENCH : 4,120,148
AndyGrant · Jun 14, 2021 · f6496c3 · f6496c3
1 parent 57cfc7f
commit f6496c3
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diff --git a/src/search.h b/src/search.h
@@ -50,7 +50,7 @@ static const int WindowTimerMS = 2500;
 static const int CurrmoveTimerMS = 2500;
 
 static const int BetaPruningDepth = 8;
-static const int BetaMargin = 85;
+static const int BetaMargin = 75;
 
 static const int AlphaPruningDepth = 5;
 static const int AlphaMargin = 3000;

diff --git a/src/uci.h b/src/uci.h
@@ -22,7 +22,7 @@
 
 #include "types.h"
 
-#define VERSION_ID "13.03"
+#define VERSION_ID "13.04"
 
 #define LICENSE_OWNER "Unlicensed"