sudokyou.org
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5
1
9
6
2
1
8
5
9
3
1
9
6
8
4
5
1
7
4
5
2
7
3
8
help
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notes
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undo
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1
4/9
2
2/9
3
2/9
4
2/9
5
4/9
6
2/9
7
2/9
8
3/9
9
3/9
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controls, instructions
instructions, rules
HELLO
Sudoku Rules
Each row must contain the numbers 1-9, without repetition.
Each column must contain the numbers 1-9, without repetition.
Each 3x3 sub-grid must contain the numbers 1-9, without repetition.
Keyboard Instructions
Press and/or hold
(1-9)
or these keys to input numbers:
q
w
e
a
s
d
z
x
c
n
- Toggle notes mode.
u
- Undo a move.
Backspace
- Clear a square.
hjkl (vim)
or
arrow keys
- Move around the board.
Shift
- Temporarily toggle notes mode when held down.
Meta key (⌘ Mac / ⊞ Win) + click
- Select multiple squares for adding notes.