From: Joona Kiiski <joona.kiiski@gmail.com>
Date: Wed, 20 Nov 2013 20:39:57 +0000 (+0000)
Subject: Generate Qsearch checks only at depth 0
X-Git-Url: https://git.sesse.net/?p=stockfish;a=commitdiff_plain;h=3ede7daab3ae9c3cc8c408c8e2cfe821f6f79e43;ds=sidebyside

Generate Qsearch checks only at depth 0

An old idea retested at SPRT(0, 3) with 60+0.05 TC:
LLR: 2.95 (-2.94,2.94) [0.00,3.00]
Total: 98872 W: 15549 L: 15123 D: 68200

This is a very small elo increase patch so it really
stresses the limits of fishtest.

bench: 8596156
---

diff --git a/src/types.h b/src/types.h
index bcf3da5c..ff376386 100644
--- a/src/types.h
+++ b/src/types.h
@@ -194,8 +194,8 @@ enum Depth {
   ONE_PLY = 2,
 
   DEPTH_ZERO          =  0 * ONE_PLY,
-  DEPTH_QS_CHECKS     = -1 * ONE_PLY,
-  DEPTH_QS_NO_CHECKS  = -2 * ONE_PLY,
+  DEPTH_QS_CHECKS     =  0 * ONE_PLY,
+  DEPTH_QS_NO_CHECKS  = -1 * ONE_PLY,
   DEPTH_QS_RECAPTURES = -5 * ONE_PLY,
 
   DEPTH_NONE = -127 * ONE_PLY