Kwamzworld Sudoku Fun Challenge Graphite — a Sudoku notebook Graphite a puzzle notebook, digitized Time 00:00 Mistakes 0 Filled 0 / 81 Difficulty Easy — 45 clues Medium — 35 clues Hard — 29 clues Expert — 23 clues New puzzle Enter Pencil marks off Erase Check Reveal a cell Solved — nicely reasoned. ✒️