Great ! It's Christmas before Christmas ! Thank you. 
("*"x5)=~/(.*)(?{push@t," "x(5-length $1).$1."*".$1."\n"})(?!)/;print 
+reverse@t;

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In reply to Re^2: N-Queens problem with a regex (again) by brx
in thread N-Queens problem with a regex (again) by brx

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