Sudoku Mine - Hard

Play free Sudoku Mine Hard online or download printable Sudoku Mine Hard (up to 4 puzzles per page) to solve with pen and paper.

Killer Sudoku - Hard

Sudoku Puzzle #46

Not hard puzzle, but how offten do you guys keep track of pentuples or higher, I noticed mine in box9 and just wonder on other people's approach(solved, just hope to get some

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