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!
9
14
11
14
9
16
7
10
17
7
11
10
5
4
11
15
17
6
14
9
16
12
17
7
22
5
7
16
9
15
21
10
9
11
12
123
456
789
×
456
789
×
Starting in 5