Solve an expert puzzle

Solve one puzzle of each size

Solve 5 puzzles

Solve a puzzle without notes

Solve a 9x9 puzzle

Solve your first puzzle

Unlock all board sizes

Solve a 9x9 in under 10 minutes

Solve a hard puzzle

Add notes to 50 cells

Solve a 16x16 in under 30 minutes

Solve a hard puzzle with no hints

Solve a medium puzzle

Solve 10 puzzles with no hints

Play 3 days in a row

Finish all puzzles in a pack

Solve any puzzle with zero conflicts

Use undo

Solve 100 puzzles

Solve a 6x6 in under 5 minutes

Solve 500 puzzles

Play 30 days in a row

Play 7 days in a row

Solve 3 puzzles in one day

Solve 25 puzzles

Solve an easy puzzle

Use a hint

Finish a puzzle you abandoned earlier

Solve a 16x16 puzzle

Fill 1000 cells

Play for 60 total minutes

Place 500 digits

Finish a pack with zero hints

Solve a puzzle from each source

Solve a 6x6 puzzle