Scoreboard About

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

Haste

Combos gain time. Mistakes lose time. New puzzles each run.

New puzzles each run

Countdown

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

Next level in 3 hours

Speedrun

Solve a sequence of puzzles as quickly as you can.

Next speedrun in 3 hours

Rated

Solve puzzles quickly to gain more rating points.

Your rating: Unrated

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
Yesterday
Fastest speedruns
77.4s
83.0s
Past 24 hours
Most infinity puzzles solved
Today
Fastest speedruns
58.8s
Site updates
Oct 7, 2020
Click the "view puzzles" button after a speedrun or haste round to view the puzzles you saw during the round.
Oct 1, 2020
If you forgot your password and signed up with an email, you can reset your password here if you're not logged in.
Feb 26, 2019
Rated mode is now in beta. Expect a rating reset in the future after puzzle ratings stabilize and tweaks are made to the rating system. More features to come.
Feb 24, 2019
Turn sounds on/off using the volume icon in the header
Feb 21, 2019
Links