diff --git a/src/main/java/com/jatkin/splixkoth/ppcg/SplixSettings.java b/src/main/java/com/jatkin/splixkoth/ppcg/SplixSettings.java
index a6f6dd9..af7e806 100644
--- a/src/main/java/com/jatkin/splixkoth/ppcg/SplixSettings.java
+++ b/src/main/java/com/jatkin/splixkoth/ppcg/SplixSettings.java
@@ -15,7 +15,7 @@
 public class SplixSettings {
     public static final int gameIterationsCount = 2000;
     public static final int pointsForKill = 300;
-    public static final int boardDims = 200;
+    public static final int boardDims = 100;
     
     // must be square for the ui to work correctly
     public static final Point2D viewingAreaSize = new Point2D(20, 20);
diff --git a/src/main/java/com/jatkin/splixkoth/ppcg/game/SplixBoard.java b/src/main/java/com/jatkin/splixkoth/ppcg/game/SplixBoard.java
index ab305dd..f851fb0 100644
--- a/src/main/java/com/jatkin/splixkoth/ppcg/game/SplixBoard.java
+++ b/src/main/java/com/jatkin/splixkoth/ppcg/game/SplixBoard.java
@@ -167,7 +167,18 @@ public void fillPlayerCapturedArea(SplixPlayer whoToCheck, Set<Point2D> areaChan
 
         for (Point2D pt : checkSpace) {
             Set<Point2D> points = floodSearchHelperFillPlayerCapturedArea(pt, whoToCheck, previouslyVisitedLocations);
-            if (points != null) {// valid fill that didn't hit wall
+            MutableList<Point2D> border = getAdjacent(points);
+            
+            // Interesting edge case: A player can completely surround another, and when the 2nd player
+            // exits his area to make a trail and claim more area, the first player would originally 
+            // capture all of the 2nd player's land. This code removes that edge case.
+            // ref: https://chat.stackexchange.com/transcript/message/38228281#38228281
+            boolean canFillIn = border.toSet().select(p2d -> {
+                        SplixPlayer claimer = get(p2d).getClaimer();
+                        return claimer != null && claimer != whoToCheck;
+                    }).isEmpty();
+            
+            if (points != null && canFillIn) {// valid fill that didn't hit wall
                 points.forEach(x -> get(x).setOwner(whoToCheck));
             }
         }