Optimise board edge handling

This new organisation assumes that you'll do very few modifications
before calling forEachMoves again.

1 files changed, 1 insertions, 0 deletions

diff --git a/main.cpp b/main.cpp
index ec4775a..0c6e0de 100644
--- a/main.cpp
+++ b/main.cpp
@@ -1,6 +1,7 @@
 #include <iostream>
 #include <sstream>
 #include <cstdlib>
+#include <cstring>
 #include <unistd.h>
 #include <sys/time.h>
 #include "board.h"