From: Joona Kiiski <joona.kiiski@gmail.com>
Date: Wed, 10 Apr 2013 20:19:21 +0000 (+0200)
Subject: Always check repetition
X-Git-Url: https://git.sesse.net/?p=stockfish;a=commitdiff_plain;h=75221fcf5e05c148d1023ea45f40794d9462774a

Always check repetition

It seems stronger both at fast 15+0.05 TC with fixed game number test:
ELO: 2.74 +-2.7 (95%) LOS: 97.6%
Total: 24000 W: 4698 L: 4509 D: 14793

And also at long 60+0.05 TC with SPRT
LLR: 3.05 (-2.94,2.94)
Total: 38986 W: 6845 L: 6547 D: 25594

bench: 5157061
---

diff --git a/src/search.cpp b/src/search.cpp
index f58baf39..529a6ffe 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -1129,7 +1129,7 @@ split_point_start: // At split points actual search starts from here
     ss->ply = (ss-1)->ply + 1;
 
     // Check for an instant draw or maximum ply reached
-    if (pos.is_draw<true>() || ss->ply > MAX_PLY)
+    if (pos.is_draw<false>() || ss->ply > MAX_PLY)
         return DrawValue[pos.side_to_move()];
 
     // Decide whether or not to include checks, this fixes also the type of