For those who are interrested, here are some missing test-cases to add in the original test script. (They cancelled some of my solutions...)
[<<END, 1],
x x x
x
x
x
x
x
x
x
x
x x x
END
[<<END, 0],
x
x x xxx xx
xxx x x x
xxx x
xxx
xxxxx x
x xxx
x xx x
xxx xxx
x
END
--
|3eno�t, who'd better get back to work
