Chess puzzles — SAE-tagged tactical positions
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9,950 SAE-tagged tactical puzzles. Every puzzle is decomposed into the specific Leela Chess Zero neural-network features that fire on it, so when you miss a puzzle you learn which pattern you didn't recognise — not just that you got it wrong. Below: a sample across the rating range. Each links to a full page with an SVG board, themes, FEN, solving guide (collapsed), and the concepts that fire on the position.
Sample puzzles by rating
- Puzzle zyhJH — ELO 701, endgame, mate, mateIn2
- Puzzle zzG9u — ELO 901, endgame, long, master
- Puzzle zzVJf — ELO 1101, crushing, endgame, master
- Puzzle zyEWn — ELO 1301, attraction, crushing, endgame
- Puzzle zxofz — ELO 1501, attraction, crushing, fork
- Puzzle zu4l2 — ELO 1701, advancedPawn, crushing, endgame
- Puzzle zuSK1 — ELO 1901, advantage, long, middlegame
- Puzzle XY1DQ — ELO 2101, mate, mateIn1, middlegame