From: lucasart <lucas.braesch@gmail.com>
Date: Sun, 16 Nov 2014 23:04:58 +0000 (+0800)
Subject: Half History Max
X-Git-Url: https://git.sesse.net/?p=stockfish;a=commitdiff_plain;h=3b1f552b08b254a5b2d8234ba35d52d3ee86a7cb

Half History Max

STC
LLR: 3.35 (-2.94,2.94) [-0.50,3.50]
Total: 17993 W: 3740 L: 3508 D: 10745

LTC
LLR: 3.25 (-2.94,2.94) [0.00,4.00]
Total: 21346 W: 3691 L: 3453 D: 14202

Bench: 7694316

Resolves #120
---

diff --git a/src/movepick.h b/src/movepick.h
index c512d130..b9d2594a 100644
--- a/src/movepick.h
+++ b/src/movepick.h
@@ -40,7 +40,7 @@
 template<bool Gain, typename T>
 struct Stats {
 
-  static const Value Max = Value(2000);
+  static const Value Max = Value(250);
 
   const T* operator[](Piece pc) const { return table[pc]; }
   void clear() { std::memset(table, 0, sizeof(table)); }
diff --git a/src/search.cpp b/src/search.cpp
index ccea71ca..5e356115 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -1252,7 +1252,7 @@ moves_loop: // When in check and at SpNode search starts from here
 
     // Increase history value of the cut-off move and decrease all the other
     // played quiet moves.
-    Value bonus = Value(4 * int(depth) * int(depth));
+    Value bonus = Value(int(depth) * int(depth));
     History.update(pos.moved_piece(move), to_sq(move), bonus);
     for (int i = 0; i < quietsCnt; ++i)
     {