goal reached
X X X X X X X X   0
X A . O . . A X
X . . . . . . X
X @ . Ø . . @ X
X X X X . . B X
X X X X Ø . O X
X X X X C . . X
X X X X X X X X
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X X X X X X X X   1
X A . O . . . X
X . . . . . . X
X @ . Ø . . @ X
X X X X . . B X
X X X X A . O X
X X X X C . . X
X X X X X X X X
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X X X X X X X X   2
X A . O A . . X
X . . . . . . X
X @ . Ø . . @ X
X X X X . . B X
X X X X Ø . O X
X X X X C . . X
X X X X X X X X
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X X X X X X X X   3
X A . O A . . X
X . . . . . . X
X @ . Ø . . @ X
X X X X . . . X
X X X X B . O X
X X X X C . . X
X X X X X X X X
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X X X X X X X X   4
X A . B A . . X
X . . . . . . X
X @ . Ø . . @ X
X X X X . . . X
X X X X Ø . O X
X X X X C . . X
X X X X X X X X
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X X X X X X X X   5
X . A B A . . X
X . . . . . . X
X @ . Ø . . @ X
X X X X . . . X
X X X X Ø . O X
X X X X C . . X
X X X X X X X X
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X X X X X X X X   6
X . A B A . . X
X . . C . . . X
X @ . Ø . . @ X
X X X X . . . X
X X X X Ø . O X
X X X X . . . X
X X X X X X X X