Features
To start a new game, click the File menu and select "New game..."

To lock/unlock a cell, right-click it and select "lock" in the menu. The "unlock map" button locks or unlocks all cells.

To save a game, click the File menu and select "Save" or "Save As...". "Save" doesn't prompt for a name

To load a game, click File and select the name of the game you saved.

To undo a move, click Undo or press "Ctrl + Z".

To see the solution, click the "Resign" button. Note: The solver considers a puzzle based on the locked cell. If you have locked some cells during the game, it won't be able to change those in order to solve the puzzle.

To reset the puzzle, click the "Clear map" button.

Sudoku

< File

O Undo

Ð Unlock map

M Clear map

I Resign

1

2

3

4

5

6

7

8

9