X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fsearch.cpp;h=c7d2efd40da46bb6189e834fea0bee051ae2f182;hp=07c491b69f487faae35f5aa07469c864a3263ebb;hb=5f426d8667feda65eaf1eca699f629d31e170d43;hpb=7135678f71b7f6ee32e92b8dbef2b16b403d8ea9

diff --git a/src/search.cpp b/src/search.cpp
index 07c491b6..c7d2efd4 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -520,7 +520,7 @@ void Thread::search() {
               totBestMoveChanges += th->bestMoveChanges;
               th->bestMoveChanges = 0;
           }
-          double bestMoveInstability = 1 + totBestMoveChanges / Threads.size();
+          double bestMoveInstability = 1 + 2 * totBestMoveChanges / Threads.size();
 
           double totalTime = rootMoves.size() == 1 ? 0 :
                              Time.optimum() * fallingEval * reduction * bestMoveInstability;