On: Solving Every Sudoku Puzzle (2006)

[justinator]

Sudoku solver using Perl regex http://www.perlmonks.org/?node_id=471168

Sudoku solver in three lines of Perl (golf): https://web.archive.org/web/20070106133158/http://www.eccles...

      use integer;@A=split//,<>;sub R{for$i(0..80){next if$A[$i];my%t=map{$_/9
    ==$i/9||$_%9==$i%9||$_/27==$i/27&&$_%9/3==$i%9/3?$A[$_]:0=>1}0..80;R($A[
    $i]=$_)for grep{!$t{$_}}1..9;return$A[$i]=0}die@A}R