other perl solvers
Before you think that I am original:
- there are solvers on CPAN
- someone wrote a pretty good sudoku solver in three lines of perl:
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