Sudoku Solver

Instructions

• Hit the Clear button and enter the Sudoku givens manually. You can click a cell, use the keyboard arrow keys, then type 1 to 9. Delete or 0 clears a cell.
• When you are finished, hit Load. The givens will appear in blue.
• Reset removes user-entered values and returns to the original givens.
• Allowed digits are shown as small light gray digits in each cell. Show allowed toggles them.
• Singles are highlighted in red. Show singles toggles those hints.
• Accept converts singles to actual entered digits.
• Hint fills in the current selected cell with the correct digit.
• Clicking a filled cell highlights the same digit elsewhere in red.
• Solve solves the entire puzzle, and Undo reverses the last user action where supported.