ref: 60befe7df166ae7464c665394ba3793d9d26e184
dir: /sys/games/lib/sudoku/boards/veasy000.su/
361.259.. .8.96..1. 4......57 ..8...471 ...6.3... 259...8.. 74......5 .2..18.6. ..547.329 361725948 587964213 492831657 638259471 174683592 259147836 746392185 923518764 815476329