metadata
license: cc0-1.0
tags:
- lichess
- chess
- puzzles
- datasets
Lichess Puzzle Database …
Lichess Puzzle Database ▸ Mate‑in‑1/2/3 Subset
A 10k slice of the official Lichess puzzle corpus.
Note: The board is updated to the position that arises after the opponent blunders.
Source
- Original dataset: https://huggingface.co/datasets/Lichess/chess-puzzles
What’s Inside
| Category | Count |
|---|---|
| Mate‑in‑1 | 3333 |
| Mate‑in‑2 | 3333 |
| Mate‑in‑3 | 3333 |
| Total | 9999 |
Format Improvements
| Field | Old | New |
|---|---|---|
| Position | FEN | FEN & PGN |
| Solution | UCI move | UCI move & SAN move |
License
Data and code released under CC0‑1.0 — no rights reserved.