Jigsaw Sudoku

About medium jigsaw sudoku

Medium difficulty drops the given count enough that scanning alone won't finish the puzzle. You'll need to find hidden singles inside the irregular regions, which means tracing each region's boundary to check which digits are already placed. This is where jigsaw sudoku starts to feel different from standard sudoku. A digit might be confined to one cell within a region even though multiple cells look valid at first glance. Take your time with the region colors and border lines.