From: Marco Costalba <mcostalba@gmail.com>
Date: Thu, 25 Dec 2008 19:08:45 +0000 (+0100)
Subject: Tweak again futility margings
X-Git-Url: http://winboard.nl/cgi-bin?a=commitdiff_plain;h=dae4e7df07061c01c60bee182cf7e54f4743beb8;p=fairystockfish.git

Tweak again futility margings

Lower margins near the leafs, higher at high depth.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
---

diff --git a/src/search.cpp b/src/search.cpp
index ffd4842..aaa2f51 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -165,8 +165,8 @@ namespace {
   // Margins for futility pruning in the quiescence search, and at frontier
   // and near frontier nodes
   Value FutilityMarginQS = Value(0x80);
-  Value FutilityMargins[6] = { Value(0x120), Value(0x220), Value(0x250),
-                               Value(0x280), Value(0x320), Value(0x360) };
+  Value FutilityMargins[6] = { Value(0x100), Value(0x200), Value(0x250),
+                               Value(0x2A0), Value(0x340), Value(0x3A0) };
 
   // Razoring
   Depth RazorDepth = 4*OnePly;