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
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0
Finished!
17
7
16
14
7
11
9
15
8
10
10
4
3
11
12
11
15
12
9
14
10
19
7
14
9
8
12
15
16
5
17
3
8
33
5
9
123
456
789
×
456
789
×
Starting in 5