1 files changed, 6 insertions, 12 deletions
diff --git a/src/root.c b/src/root.c
index 7c50a65..8d1adf8 100755
--- a/src/root.c
+++ b/src/root.c
@@ -456,17 +456,6 @@ Return value:
     ASSERT(d);
     Trace("Null move cutoff rate: %5.3f percent.\n",
           ((n / d) * 100.0));
-    n = (double)(ctx->sCounters.tree.u64HistoryPruneReSearches);
-    d = (double)(ctx->sCounters.tree.u64HistoryPrunes) + 1;
-    Trace("History/LMR pruning: %"COMPILER_LONGLONG_UNSIGNED_FORMAT
-          " reduced, %5.3f percent needed a full-depth re-search.\n",
-          ctx->sCounters.tree.u64HistoryPrunes, ((n / d) * 100.0));
-    n = (double)(ctx->sCounters.tree.u64FutilityPrunes);
-    d = (double)(ctx->sCounters.tree.u64FutilityCandidates) + 1;
-    Trace("Futility pruning: %"COMPILER_LONGLONG_UNSIGNED_FORMAT
-          " candidates, %5.3f percent actually pruned "
-          "(rest saved by fail-high%% / SEE gates).\n",
-          ctx->sCounters.tree.u64FutilityCandidates, ((n / d) * 100.0));
     if (ctx->sCounters.egtb.uProbes > 0)
     {
         n = (double)(ctx->sCounters.egtb.uHits);
@@ -1166,10 +1155,15 @@ Return value:
             if (iBeta > INFINITY) iBeta = +INFINITY;
             if (iAlpha < -INFINITY) iAlpha = -INFINITY;
             if (iAlpha >= iBeta) iAlpha = iBeta - 1;
+            // Was + HALF_PLY.  Trimmed by QUARTER_PLY to compensate for
+            // search.c's qsearch-entry threshold moving from ONE_PLY down
+            // to THREE_QUARTERS_PLY -- that change alone would otherwise
+            // hand every line an extra ~1/4 ply of full-width search for
+            // free, not just check-heavy ones.
             iScore = RootSearch(ctx,
                                 iAlpha,
                                 iBeta,
-                                uDepth * ONE_PLY + HALF_PLY);
+                                uDepth * ONE_PLY + QUARTER_PLY);
             if (g_MoveTimer.bvFlags & TIMER_STOPPING) break;
             mv = ctx->mvRootMove;