5
3
7
6
1
9
5
9
8
6
8
6
3
4
8
3
1
7
2
6
6
2
8
4
1
9
5
8
7
9
Three difficulty levels
Easy, Medium and Hard — every puzzle has exactly one solution.
Saves your progress
Step away anytime. Your board, notes and timer wait for you.
Play anywhere
Designed for phones first, lovely on any screen.