Revision history for Games-Sudoku-Solver 0.0.1 May 8 16:24:32 2007 Original version, derived from an earlier version. 1.0.0 June 5 2007 Initial release. 1.1.0 December 12 2007 Bugfix: sudoku_check reports wrong submatrix. Solution can be restricted to have unique digits on one or both diagonals.