To enter a number:
Left-click in the desired square and choose a number from the popup keypad
-or-
Point to the desired square and press a number key on the keyboard
To clear a number:
Left-click in the desired square and choose 'x' from the popup keypad
-or-
Point to the desired square and press the space key on the keyboard
To create a pencil mark:
Right-click in the desired square and choose a number from the popup keypad
(For single-button mice, hold SHIFT or CTRL while clicking)
-or-
Point to the desired square and press a number key while holding SHIFT
Time
0
0
Finished!
5
9
3
7
2
8
7
8
5
3
2
9
6
1
7
9
5
3
1
2
8
7
6
4
4
9
6
5
9
4
8
2
4
2
3
7
6
1
9
3
5
6
8
7
4
123
456
789
×
456
789
×
Starting in 5