From 0a252433b803afd4286f783f4c7c98b9c82ac8f9 Mon Sep 17 00:00:00 2001
From: Joseph Redmon <pjreddie@gmail.com>
Date: Sun, 13 Mar 2016 23:31:21 -0700
Subject: [PATCH] fixed ko bug

---
 src/go.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/go.c b/src/go.c
index 5f8a418e..013d4e1e 100644
--- a/src/go.c
+++ b/src/go.c
@@ -117,7 +117,7 @@ void update_board(float *board)
     int i;
     int *l = calculate_liberties(board);
     for(i = 0; i < 19*19; ++i){
-        if (board[i] && !l[i]) board[i] = 0;
+        if (board[i] < 0 && !l[i]) board[i] = 0;
     }
     free(l);
 }