Achievements

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

Three

Three minutes, three lives,
three hints
New puzzles each run

Countdown

Solve puzzles before time runs out. New level each day.
Next level in 24 hours

Speedrun

Solve a sequence of puzzles as quickly as you can.
Theme: Middlegame

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
Haste high scores
josgar05
100
Phenomenonly
100
Origynalx3
93
Plattfuss
78
pebIlmey
74
Three high scores
Plattfuss
60
Phenomenonly
58
dcc_london
57
KirinoKousaka
52
twopawn
37
Most infinity puzzles solved
Ohanna_2020
693
droubbley
683
DrOlliver
210
lemondestfou
180
JRoger
133
Past 24 hours
Haste high scores
josgar05
98
Origynalx3
68
KirinoKousaka
61
i_sei
59
Laparrilla
49
Three high scores
dcc_london
56
KirinoKousaka
52
predator
13
Most infinity puzzles solved
AbuElDahab
75
DrOlliver
60
Ohanna_2020
59
Hermion
50
JRoger
21
Yesterday
Fastest speedruns
Boby
89.8s
Konstantin0201
115.0s
Sensei_T
218.1s
Fatinishrak1
285.7s
SerRavs
371.7s
Countdown high scores
Frandy
61
JMbishop
39
Miau
37
law
35
predator
21
Unique puzzles solved
Origynalx3
309
dcc_london
204
KirinoKousaka
135
SwitchDoctor
126
josgar05
116
Today
Unique puzzles solved
TparTR
10

Themed chess puzzle sets.

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

Mate in one

Practice checkmate in one move. Great for beginners.

Rook endgames

The most common type of piece endgames.

Openings

Practice tactical patterns from chess openings.
Past 3 days
Mate in one high scores
Phenomenonly
100
dcc_london
100
anh_ce
31
Rook endgames high scores
Phenomenonly
100
N2Terrible
40
Frandy
34
anh_ce
25
predator
11
Openings high scores
anh_ce
24
Site updates
Sep 22, 2025
You can now customize the pieces on your board
Sep 17, 2025
Game mode puzzles have been upgraded to use the latest Lichess puzzle database
Aug 17, 2025
After selecting a game mode, you can now resize the chessboard via the icon in the bottom-right corner.
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.
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
You can now customize your board colors
Links
Join the Discord channel
Practice endgame positions
ScoreboardAbout