Fill the grid so that each number appears once in every row and once in every column.
Each block of squares has a total and an operation in the top left corner. For example:
Use the green pencil to note possible values.
Select grid squares, then click a number button to indicate that that number is possible in those squares.
Clicking the number a second time will remove the note from those grid squares.
To note impossible values, use the red pencil.
To undo the most recent move, click the yellow button.
To reset the game, click the purple button.
Use the red pencil to note impossible values.
Select grid squares, then click a number button to indicate that that number is impossible in those squares.
Clicking the number a second time will remove the note from those grid squares.
To note possible values, use the green pencil.
To undo the most recent move, click the yellow button.
To reset the game, click the purple button.
That was awesome.
Enter five unique numbers, and select signs to include on the puzzle.