Chess960 / Fischer Random Support

[nloding]

Problem

Chess960 (Fischer Random) is not supported.

Challenges

1. Castling rights tracking for non-standard rook/king positions
2. Different castling notation in PGN (e.g., O-O vs Kg1 for same position)
3. FEN starting positions with non-standard castling rights

Solution

1. Track castling rights by file position, not just kingside/queenside
2. Parse Chess960 castling notation
3. Support [Variant "Chess960"] tag

Files

• src/position.rs
• src/game.rs
• src/pgn.rs

Priority

Low - niche feature