Add a second margin to razoring

[stockfish] / src / search.cpp

diff --git a/src/search.cpp b/src/search.cpp
index 4b966f61958d54460f2988990832d648a0f990e2..10aa196add95d87944db24863eb1cbd5c764010e 100644 (file)
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -1122,7 +1122,8 @@ namespace {
         }
     }
     // Null move search not allowed, try razoring
-    else if (depth < RazorDepth && approximateEval < beta - RazorMargin)
+    else if (  (approximateEval < beta - RazorMargin && depth < RazorDepth)
+             ||(approximateEval < beta - PawnValueMidgame && depth <= OnePly))
     {
         Value v = qsearch(pos, ss, beta-1, beta, Depth(0), ply, threadID);
         if (v < beta)
@@ -2172,6 +2173,12 @@ namespace {
     {
         lastInfoTime = t;
         lock_grab(&IOLock);
+        if (dbg_show_mean)
+            dbg_print_mean();
+
+        if (dbg_show_hit_rate)
+            dbg_print_hit_rate();
+
         std::cout << "info nodes " << nodes_searched() << " nps " << nps()
                   << " time " << t << " hashfull " << TT.full() << std::endl;
         lock_release(&IOLock);