Scoreboard About

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


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

New puzzles each run


Three minutes, three lives,
three hints

New puzzles each run


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

Next level in 22 hours


Solve a sequence of puzzles as quickly as you can.

Next speedrun in 22 hours


Solve puzzles quickly to gain more rating points.

Your rating: Unrated


Play through endless puzzles. Set your own difficulty.

Sign up to track your progress


Quickly solve puzzles without mistakes to unlock the next level.

Level 1 — Just warming up
Fastest speedruns
Countdown high scores
Past 24 hours
Most infinity puzzles solved
Site updates
May 23, 2021
You can now create and play custom puzzle sets. This feature is still early in development. Feedback is welcome!
Dec 19, 2020
You can now use right click to draw shapes on the board. Click to draw circles. Click and drag to draw arrows.
Dec 15, 2020
When you view puzzles after a haste round, puzzles you made mistakes on will now be clearly shown.
Dec 8, 2020
A new game mode (Three) is in beta. Have fun and let us know what you think!
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