1) Not strict and warnings clean.
2) perl -c on
if( $puzmap[$bestpos] & 1 == 0 )
gives:
"Possible precedence problem on bitwise & operator at
sudoku_ip.pl line ..."
but this seems to be a clash between undeclared variables.
The intended precedence seems to be
if( ( $puzmap[$bestpos] & 1 ) == 0 )
but this gives me:
"Whoops - bestpos is a given square at..."
Changing the precedence to
if( $puzmap[$bestpos] & ( 1 == 0 )
seems to generate the right answer.
Is this what you intended?
