From bdfd656c2400ea66cfdbd7dae9ca6bfd505e91c7 Mon Sep 17 00:00:00 2001
From: Marco Costalba <mcostalba@gmail.com>
Date: Tue, 16 Nov 2010 19:28:09 +0100
Subject: [PATCH] Use occupied_squares() in book_key()

No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
---
 src/book.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/book.cpp b/src/book.cpp
index 0212317f..7cb0863c 100644
--- a/src/book.cpp
+++ b/src/book.cpp
@@ -528,7 +528,7 @@ namespace {
   uint64_t book_key(const Position& pos) {
 
     uint64_t result = 0;
-    Bitboard b = pos.pieces_of_color(WHITE) | pos.pieces_of_color(BLACK);
+    Bitboard b = pos.occupied_squares();
 
     while (b)
     {
-- 
2.39.2