Josh
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Reviewed-on: #14 Co-authored-by: Josh <josh@joshuaschuett.com> Co-committed-by: Josh <josh@joshuaschuett.com>
44 lines
1.8 KiB
Markdown
44 lines
1.8 KiB
Markdown
# Chess Engine in C — Project Goal
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Build a clean, fast chess engine in C that starts from a FEN string and produces fully legal moves, verified via **PERFT** for correctness and speed.
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## Approach
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- **Correctness-first engine:** `FEN → board → legal movegen → PERFT`
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## FEN (Forsyth–Edwards Notation)
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FEN is a single line string that describes a chess position. Format:
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<pieces> <side> <castling> <en-passant> <halfmove> <fullmove>
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- **pieces**: 8 ranks (8→1) separated by `/`; letters for pieces (`PNBRQK`/`pnbrqk`), digits for empty squares.
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- **side**: `w` (White) or `b` (Black) to move.
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- **castling**: any of `KQkq` or `-` if none.
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- **en-passant**: target square after a two-step pawn move, or `-`.
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- **halfmove**: moves since last pawn move/capture (50-move rule).
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- **fullmove**: move number (starts at 1, increments after Black’s move).
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**Example (starting position)**
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rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1
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- pieces: starting layout
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- side: `w` (White to move)
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- castling: `KQkq` (both sides can castle both ways)
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- en-passant: `-`
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- halfmove: `0`
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- fullmove: `1`
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## Future Work
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- Incorporate algorithms and evaluation methods for chess positions to enable an **AI player**.
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- Build an API to facilitate chess games with the AI player over the web.
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- Starting with a commandline client.
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- Later building a web based client.
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## Chess Engine Programming & Information
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- **Chess Programming Wiki (CPW):** <https://www.chessprogramming.org/>
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- **PERFT (definition & methodology):** <https://www.chessprogramming.org/Perft>
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- **PERFT Results & test positions:** <https://www.chessprogramming.org/Perft_Results>
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- **FEN reference:** <https://www.chessprogramming.org/Forsyth-Edwards_Notation>
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- **Bitboards** <https://www.chessprogramming.org/Bitboards> |