From: Joona Kiiski <joona.kiiski@gmail.com>
Date: Sun, 22 Nov 2009 14:50:44 +0000 (+0200)
Subject: Always extend full ply in PV
X-Git-Url: https://git.sesse.net/?p=stockfish;a=commitdiff_plain;h=8b3fdec7ecf330968dae2339e5c1b9a664bda51d;hp=58452de86d120ca7894917c656ecbb56a6273f22;ds=sidebyside

Always extend full ply in PV

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
---

diff --git a/src/search.cpp b/src/search.cpp
index ab34a845..7efb3928 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -1154,7 +1154,7 @@ namespace {
           {
               Value excValue = search(pos, ss, ttValue - OnlyMoveMargin, Max(Min(depth / 2,  depth - 4 * OnePly), OnePly), ply, false, threadID, tte->move());
               if (excValue < ttValue - OnlyMoveMargin)
-                  ext = (depth >= 8 * OnePly)? OnePly : ext + OnePly / 2;
+                  ext = OnePly;
           }
       }