Expert Sudoku · Puzzle 2
A new, tougher challenge · 23 starting clues · No solution page
Select a square to start.
How to play: Click a square, then press 1–9 on your keyboard or use the number buttons. Choose Pencil marks to add or remove small candidate numbers. Choose Answer to enter a full-sized number. Backspace/Delete erases; arrow keys move around the grid; N switches modes; Ctrl+Z undoes. Your progress saves automatically in this browser on this computer.