question 5

main.py

@@ -23,6 +23,9 @@ class TabletteChocolat:
 
         return it.chain(its)
 
+    def est_possible(self, i, j):
+        return (i,j) in list(self.coups_possibles())
+
 if __name__ == "__main__":
     import doctest
     doctest.testmod()
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