sudokyou.org
00:00
Easy
Medium
Hard
Unfair
Extreme
2
7
3
5
6
3
8
4
5
1
6
1
3
8
5
4
4
1
6
2
8
9
8
6
3
4
5
8
3
6
7
2
1
5
2
7
6
8
1
4
help
settings
notes
auto
hints
delete
undo
restart
1
5/9
2
4/9
3
5/9
4
5/9
5
5/9
6
6/9
7
3/9
8
6/9
9
1/9
share
new
progress bar
timer
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.