Games
Review positions you played
Link Lichess or paste a PGN. Walk through a game with Stockfish, tag mistakes, and save any position as a card.
Spaced repetition for chess
Your chess study, on a schedule.
Build decks from your games, tactical puzzles, and opening lines. ChessGrains schedules each card so you review it again before you forget.
- Game review
- Tactical puzzles
- Opening study
- Community decks
Free to start. Link Lichess from settings after you sign in.
Why grains?
There is an old story about paying the inventor of chess in rice: one grain on the first square, two on the second, four on the third, doubling each time. By the last square the total is more rice than exists on the planet.
That is where the name comes from. A quick review of a puzzle, an opening line, or a game position adds a little each time. Come back before you forget and it sticks a bit more. One grain, then two, then four.
a11
b12
c14
d18
e116
f132
g164
h1128
Eight squares in and you are already at 255. It adds up faster than it feels.
How it works
From the board to your daily queue
Games, puzzles, openings — one queue per deck. Pull material from wherever you study, then let spaced repetition decide what comes back today.
CaptureOrganiseReviewRepeat
- Puzzles
Tactics on a schedule
Add puzzles from the Lichess database or import them from community decks. Each deck keeps its own spaced-repetition schedule.
- Openings
Learn your repertoire
Study starter lines for white or black with theory moves, named variations, and engine lines when you leave the book.
- Train
A queue for every deck
Cards live in decks you organise yourself. Train one deck at a time or run Study all decks — each queue shows what is due from your last answer and a SuperMemo-2 style interval.
Ready to start training?
Create an account and build a deck from a game you played, puzzles you want to drill, or an opening line you are learning. Browse community decks if you want a head start.
Get started