X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fsearch.cpp;h=12481d4083bae3fc6d48cfb733938ec91acd595b;hp=66a27fa683a91c5345b4f1beace887f5684f6cd0;hb=421f7b74c618b69afbaf0fdc0a5f69601a867466;hpb=0da461f23b84990d17e1f1341aeb7c0589ab98e7

diff --git a/src/search.cpp b/src/search.cpp
index 66a27fa6..12481d40 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -347,7 +347,7 @@ void init_search() {
   // Init reductions array
   for (hd = 1; hd < 64; hd++) for (mc = 1; mc < 64; mc++)
   {
-      double    pvRed = 0.33 + log(double(hd)) * log(double(mc)) / 4.5;
+      double    pvRed = log(double(hd)) * log(double(mc)) / 3.0;
       double nonPVRed = 0.33 + log(double(hd)) * log(double(mc)) / 2.25;
       ReductionMatrix[PV][hd][mc]    = (int8_t) (   pvRed >= 1.0 ? floor(   pvRed * int(ONE_PLY)) : 0);
       ReductionMatrix[NonPV][hd][mc] = (int8_t) (nonPVRed >= 1.0 ? floor(nonPVRed * int(ONE_PLY)) : 0);