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