diff --git a/src/code.js b/src/code.js
index 1704026..0b512e2 100644
--- a/src/code.js
+++ b/src/code.js
@@ -17,6 +17,21 @@ var board =
     ]
 ];
 
+var ids =
+{
+    '00': [0, 0],
+    '01': [0, 1],
+    '02': [0, 2],
+
+    '10': [1, 0],
+    '11': [1, 1],
+    '12': [1, 2],
+
+    '20': [2, 0],
+    '21': [2, 1],
+    '22': [2, 2]
+}
+
 var ptm = 1;
 
 function move(id)