diff --git a/index.js b/index.js
index b410410..1f7189d 100644
--- a/index.js
+++ b/index.js
@@ -172,6 +172,15 @@ snake.onTick = function(obj) { // When the game updates
           return false;
         }
       }
+      for (var player in obj.players) {
+        if (player !== "sigonasr2") {
+          var head = obj.players[player].head
+          var dir = obj.players[player].direction
+          if (head[0]+(dir===LEFT?1:dir===RIGHT?-1:0)===newCoords[0]&&head[1]+(dir===DOWN?1:dir===UP?-1:0)===newCoords[1]) {
+            return false
+          }
+        }
+      }
       if (newCoords[0] < 0 || newCoords[0] > 149 || newCoords[1] < 0 || newCoords[1] > 149) {
         return false;
       }