Run this with an odd argument (like 3) to get a magic square :-) 
print"@{$_=++$_%@F+$p--%@F*@F+1for@F,$p;F}
"for@F=0..~-pop

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In reply to Re^3: (Golf) Tic Tac Toe by thospel
in thread (Golf) Tic Tac Toe by delirium

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