fenex 0.1.10

A rust library for parsing and handling FEN and algebraic chess notations.
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# Fenex Changelog


## Fenex v0.1.11 (8/12/2025)


### Major Updates


- **Fixed Autopromoting Issue**: Pawns no longer automatically promote to Queen only
  - Added `apply_move_with_promotion()` method to specify promotion piece
  - Added convenience methods: `promote_to_queen()`, `promote_to_rook()`, `promote_to_bishop()`, `promote_to_knight()`
  - Validation ensures only valid promotion pieces (Queen, Rook, Bishop, Knight) are allowed
  - `apply_move()` still defaults to Queen for backward compatibility
- **Comprehensive Tests**: Added tests for all promotion scenarios including invalid piece validation

### Breaking Changes


- None - all changes are backward compatible

### API Additions


- `apply_move_with_promotion(from, to, promotion)` - Apply move with specific promotion piece
- `promote_to_queen(from, to)` - Convenience method for Queen promotion
- `promote_to_rook(from, to)` - Convenience method for Rook promotion
- `promote_to_bishop(from, to)` - Convenience method for Bishop promotion
- `promote_to_knight(from, to)` - Convenience method for Knight promotion

## Fenex v0.1.0 (1/14/2024)


- Uploaded the project.

## Fenex v0.1.1 (1/15/2024)


### Changes


- Switched Coordinates to 1-Index, Previously 0-Indexed.

- Renamed piece name module files, Ex. knight -> knight_piece.

## Fenex v0.1.2 (1/15/2024)


- Reverted piece names, Ex. knight_piece -> knight. (I have commitment issues)

- Introduced board struct, Can create 1D or 2D boards with an option of constructing it with starting pieces.
- Minor changes to the piece struct, To allow force changes.
  - added change_coordinate.
  - added change_color.

## Fenex v0.1.3 (1/19/2024)


- Fixed a notation coordinate conversion problem.
- Board set piece now properly moves the piece in the board.
- Refactored PieceEnum into it's separate module under chess_piece.
- Added a lot of functions to piece_enum and board.
- Changed redundant new function in the fen parser.
- Boards can now be displayed using the print_board function.

## Fenex v0.1.4 (1/21/2024)


- Removed can_capture function from piece structs.
- Changed function parameters in piece structs.
- Added more functions to the piecetype wrapper enum.
- Pieces now have is_valid_move functions.
- Board can now generate all the possible moves in the current position.
- Added has_moved value inside the king, pawn and rook struct.

## Fenex v0.1.5 (1/25/2024)


- Added fields to the board struct.
- Heavy refactoring changed everything dhjfkghwhjfgwjhgf.
- is valid move now checks for pins and checks.
- Created a fen to board.
- Made the starting position builders more efficient.

## Fenex v0.1.6 (8/11/2025)


### Major Updates


- **Complete chess rule implementation**: All special moves now working
  - Castling (kingside and queenside) with proper rook movement
  - En passant capture with pawn removal
  - Pawn promotion (defaults to Queen)
- **Legal move validation**: Moves are validated before execution
- **Comprehensive test suite**: 10 test cases covering all chess rules
- **Code cleanup**: Improved comments and documentation
- **Bug fixes**: Fixed coordinate system issues and move generation

### Breaking Changes


- Method renamed: `make_move()` → `apply_move()`
- Coordinate construction: `Coordinates { x, y }` → `Coordinates::new(x, y)`
- Method renamed: `get_piece()` → `get()`

### Technical Improvements


- All tests now passing (11/11)
- Cleaner, more focused code comments
- Updated README with modern examples
- Better error handling for illegal moves

## Fenex v0.1.7 (8/11/2025)


- Fixed issue with checks.

## Fenex v0.1.8 (8/11/2025)


- Fixed so much bugs and forgotten implementations

## Fenex v0.1.9 (8/12/2025)


- Huge bug regarding legal move generation preventing giving checks.

## Fenex v0.1.10 (8/12/2025)


- Can now promote to any piece type except King.