X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fsearch.cpp;h=4481cfc727e436b8888825c94ec4bc99d261b21e;hp=f7a39943740d2021854de3a1788e86b70dcce058;hb=0d88b832e38430e0add9c8298458569b23e102a7;hpb=14c3da5cad5a811a42ad46af26a1acdcb335a02a

diff --git a/src/search.cpp b/src/search.cpp
index f7a39943..4481cfc7 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -1435,7 +1435,7 @@ namespace {
 
     // Go with internal iterative deepening if we don't have a TT move
     if (UseIIDAtNonPVNodes && ttMove == MOVE_NONE && depth >= 8*OnePly &&
-        evaluate(pos, ei, threadID) >= beta - IIDMargin)
+        !isCheck && evaluate(pos, ei, threadID) >= beta - IIDMargin)
     {
         search(pos, ss, beta, Min(depth/2, depth-2*OnePly), ply, false, threadID);
         ttMove = ss[ply].pv[ply];