I had a play with your code to try and fix the problem, but headed off in a much less elegant direction than you did by adding a $grid_c vector and another nested loop.

It got rather messy rather quickly. :-(

Perl is Huffman encoded by design.

In reply to Re^3: Sudoku puzzles solved using Regular Expressions by GrandFather
in thread Sudoku puzzles solved using Regular Expressions by ikegami

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