X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fsearch.cpp;h=89636f23575398840559967029541bf94ad3d736;hp=af7a5c13dd643f411e8bf1f94906e8269423f714;hb=50287a55d3b07623120d938a4159d051e32d852d;hpb=0d5fe2f156666442b497656ae459f825c771826d

diff --git a/src/search.cpp b/src/search.cpp
index af7a5c13..89636f23 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -153,7 +153,8 @@ void Search::init() {
       for (int d = 1; d < 64; ++d)
           for (int mc = 1; mc < 64; ++mc)
           {
-              double r = log(d) * log(mc) / 1.95;
+              double slope = d > 2 ? 0.88 * d + 0.36 : d;
+              double r = log(slope) * log(mc) / 1.95;
 
               Reductions[NonPV][imp][d][mc] = int(std::round(r));
               Reductions[PV][imp][d][mc] = std::max(Reductions[NonPV][imp][d][mc] - 1, 0);