Who had problems with test #7, tell me WTF? Please,anybody,post here some tricky tests!

This test helped me to avoid WA#7:
6 6
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#.#.#.
#.#.##
#.....
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#.#..#
1
3 6 6 6

ans: 6

Right answer is 5, isn't it?

Edited by author 27.01.2013 18:40