Here's another sample test that's apparently invalid, but get "Finished!".

[[5, 5, 5, 5, 5, 5, 5, 5, 5],
 [5, 5, 5, 5, 5, 5, 5, 5, 5],
 [5, 5, 5, 5, 5, 5, 5, 5, 5],
 [5, 5, 5, 5, 5, 5, 5, 5, 5],
 [5, 5, 5, 5, 5, 5, 5, 5, 5],
 [5, 5, 5, 5, 5, 5, 5, 5, 5],
 [5, 5, 5, 5, 5, 5, 5, 5, 5],
 [5, 5, 5, 5, 5, 5, 5, 5, 5],
 [5, 5, 5, 5, 5, 5, 5, 5, 5]]