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 16 hours

Speedrun

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

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
Origynalx3
100
Phenomenonly
100
Plattfuss
79
josgar05
78
pebIlmey
64
Three high scores
Phenomenonly
57
dcc_london
56
KirinoKousaka
55
Plattfuss
43
jajapple
34
Most infinity puzzles solved
droubbley
278
JRoger
166
Ohanna_2020
121
DrOlliver
100
jajapple
100
Past 24 hours
Haste high scores
Phenomenonly
81
Origynalx3
70
Mohammad_jabari
61
Laparrilla
60
josgar05
59
Three high scores
Phenomenonly
54
dcc_london
53
twopawn
26
MaxBlunders
24
MartialGuard
21
Most infinity puzzles solved
Ohanna_2020
55
DrOlliver
50
Ladas65
40
JRoger
28
grizz
11
Yesterday
Fastest speedruns
Phenomenonly
66.4s
Rawkward
100.5s
moonman105
213.7s
nickolaosgr
861.2s
Countdown high scores
Phenomenonly
66
zoike33
16
Unique puzzles solved
Origynalx3
404
Phenomenonly
170
josgar05
169
XavierFRA
168
dcc_london
164
Today
Unique puzzles solved
Mohammad_jabari
140
Phenomenonly
136
anh_ce
104
Ohanna_2020
55
Vik007
30

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
dcc_london
100
smuratore
62
MasterPru2k
49
anh_ce
42
cyberu
41
Rook endgames high scores
MasterPru2k
35
ChMouse
28
nptk456
26
anh_ce
25
Openings high scores
Phenomenonly
100
anh_ce
22
nptk456
21
MasterPru2k
15
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