Positions Scoreboard About

Fast-paced chess puzzles. Choose a game mode to get started.

Haste

Solve puzzles before time runs out. New puzzles each run.

New puzzles each run

Countdown

Solve puzzles before time runs out. New level each day.

Next level in 16 hours

Speedrun

Solve a sequence of puzzles as quickly as you can.

Next speedrun in 16 hours

Infinity

Play through endless puzzles. Set your own difficulty.

Sign up to track your progress

Repetition

Quickly solve puzzles without mistakes to unlock the next level.

Level 1 — Just warming up
Past 7 days
Most infinity puzzles solved
487
296
Repetition levels completed
80
Yesterday
Fastest speedruns
65.1s
65.2s
74.4s
75.2s
Countdown high scores
56
42
Today
Fastest speedruns
83.9s
96.0s
104.0s
304.5s
354.0s
Countdown high scores
59
25