Skip to content
Back

Hard

Hard

Puzzle

8
4
6
2
4
3
1
4
5
8
1
2
3
4
9
6
3
1
8
4
5
4
6
1
5
3
Play history

Logic required

Singles

Hardest technique: Hidden Single

In this puzzle

Solution

Solve the puzzle to reveal the solution.

More

Techniques Every pattern the solver knows, explained Campaign Learn each technique in order, then prove you found it Tournament This month's leaderboard, built on the daily challenge Friends Send and accept friend requests Settings Defaults, account and contact Build your own Type in a puzzle and check it's solvable

Playing as guest

Your puzzles live on this device's guest session and expire after 30 days of inactivity. Add an email and everything carries over.

Save progress