From 6194043af920c5f1cced81be06e525369d5ba972 Mon Sep 17 00:00:00 2001
From: Peter Osterlund <peterosterlund2@gmail.com>
Date: Sun, 4 Dec 2011 08:11:13 +0000
Subject: [PATCH] CuckooChess: Optimized reverse futility margins using CLOP.
 No significant change in playing strength though.

---
 CuckooChessEngine/src/chess/ComputerPlayer.java | 2 +-
 CuckooChessEngine/src/chess/Search.java         | 8 ++++----
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/CuckooChessEngine/src/chess/ComputerPlayer.java b/CuckooChessEngine/src/chess/ComputerPlayer.java
index 3a177b2..cdc7533 100644
--- a/CuckooChessEngine/src/chess/ComputerPlayer.java
+++ b/CuckooChessEngine/src/chess/ComputerPlayer.java
@@ -30,7 +30,7 @@ public class ComputerPlayer implements Player {
     public static final String engineName;
 
     static {
-        String name = "CuckooChess 1.13a5";
+        String name = "CuckooChess 1.13a6";
         String m = System.getProperty("sun.arch.data.model");
         if ("32".equals(m))
             name += " 32-bit";
diff --git a/CuckooChessEngine/src/chess/Search.java b/CuckooChessEngine/src/chess/Search.java
index 77dbe63..cd08c40 100644
--- a/CuckooChessEngine/src/chess/Search.java
+++ b/CuckooChessEngine/src/chess/Search.java
@@ -557,10 +557,10 @@ public class Search {
         if (!inCheck && (depth < 5*plyScale) && (posExtend == 0)) {
             if ((Math.abs(alpha) <= MATE0 / 2) && (Math.abs(beta) <= MATE0 / 2)) {
                 int margin;
-                if (depth <= plyScale)        margin = 200;
-                else if (depth <= 2*plyScale) margin = 400;
-                else if (depth <= 3*plyScale) margin = 600;
-                else                          margin = 800;
+                if (depth <= plyScale)        margin = 204;
+                else if (depth <= 2*plyScale) margin = 420;
+                else if (depth <= 3*plyScale) margin = 533;
+                else                          margin = 788;
                 if (evalScore == UNKNOWN_SCORE)
                     evalScore = eval.evalPos(pos);
                 if (evalScore - margin >= beta) {