# Chess Puzzles — EinkChess

> Canonical HTML: <https://einkchess.fun/puzzles.html>

Tactical chess puzzles from the Lichess open puzzle database, rendered for E-ink
screens. Solve a position by playing the correct move sequence; the board shows
whose turn it is ("White to move" / "Black to move").

## Rating tiers

Puzzles are bucketed by rating from 400 to 3400 ELO in steps of 100. You start at
400 ELO and the feed adapts to your puzzle ELO as you solve. Tiers unlock as you
reach 800, 1200, 1600, 2000, 2400, 2800 and 3100 ELO.

"Start New Journey" resets your puzzle progress.

## Data

Puzzle sets are static JSON served from this origin and refreshed weekly from
Lichess. See </docs/api.md> for the file layout and record schema.

- Related: </md/index.md>