X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fsearch.cpp;h=1742c6766aa3d65adf0616151fc669e1fac9632f;hp=6cf999380b6001e9069dcd154a812cc6e4827d3d;hb=0150da5c2bd4661996b05dec4a1eca473515e9d7;hpb=0b0b21c608a9c096af6155e39270a29ebfba240f

diff --git a/src/search.cpp b/src/search.cpp
index 6cf99938..1742c676 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -412,7 +412,7 @@ void Thread::search() {
           if (rootDepth >= 4)
           {
               Value previousScore = rootMoves[pvIdx].previousScore;
-              delta = Value(23);
+              delta = Value(21 + abs(previousScore) / 128);
               alpha = std::max(previousScore - delta,-VALUE_INFINITE);
               beta  = std::min(previousScore + delta, VALUE_INFINITE);