Chess puzzles built like a mountain: pick a theme, climb it level by level, plant your flag. Coaches give homework and see every move their students play.
The mountain
Every category is a band of puzzle ratings. Begin at your own level and climb toward Grandmaster at your own pace.
Lichess puzzle rating

How a climb works
Each mountain trains one idea: forks, pins, discovered checks, mate in three, endgames.

Levels are short sets of puzzles, usually ten. Solve them all and the next level opens.

Find the strongest move and play it. First-try solves earn the most stars and points.

More ways to train
Connect your Lichess account and ChessPeak builds mountains from the puzzles you miss, here and on Lichess.
See a position and a line of moves, then find the answer without watching the pieces move.
One position, one decision: positional puzzles that train judgement rather than calculation.
Play the key endgames against a perfect opponent until the technique is yours.
Fast timed puzzles: Knightmare Run, Combo Run, Rocket Run and Puzzle Cardio. Chase the leaderboard.
For coaches
ChessPeak gives a coach a classroom: invite students, put them in groups, give homework from a puzzle library, and see exactly where each student went wrong.
Who started the homework, who finished it, and who is leading the week.

Homework sits on its own page with the deadline, and one tap continues where they stopped.

Open any puzzle a student solved and see what they actually played, not just whether they got there.

Screens from the app. Student names are examples.