Some solutions for n=1
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.-4..5...-4..5....5..5....5.-4....5.-4....5..5...-4..5...-4.-4...-4.-4...-4..5
..5..5....5.-4....5..5...-4.-4....5..5...-4..5...-4.-4....5.-4...-4..5...-4..5
..5.-4....5..5....5.-4...-4..5....5..5...-4..5...-4.-4....5.-4....5.-4...-4..5
.-4..5...-4..5....5..5...-4..5....5.-4....5..5...-4..5...-4.-4...-4.-4....5..5
..5..5...-4..5....5..5...-4.-4....5.-4....5..5...-4.-4...-4.-4...-4.-4....5..5
.-4..5...-4..5....5.-4...-4.-4....5..5....5..5...-4.-4...-4.-4...-4.-4....5.-4
..5..5....5..5....5.-4...-4.-4...-4..5...-4..5....5.-4...-4..5....5.-4....5..5
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