Fix sudden death

src/main/java/com/bernard/nodecames/model/Grid.java

@@ -84,7 +84,7 @@ public class Grid {
             return (this == HINTING_BOTH) || (this == ((player == 'A')?HINTING_A:HINTING_B));
         }
         public boolean isGuessing(char player) {
-            return (this == ((player == 'A')?GUESSING_A:GUESSING_B));
+            return this == guessing(player) || this == suddenDeathOnly(player) || this == SUDDEN_DEATH_BOTH;
         }
         public boolean isAnyoneGuessing() {
             return isGuessing('A') || isGuessing('B');