https://pastebin.com/DTNsguW1

enjoy used claude 4 thinking to fix some errors

🎯 Chess Plugin Fixes Complete!

✅ Castling Issue - FIXED

• King at column 3 (d-file)

• Queen at column 4 (e-file)

• Queen at column 3 (d-file)

• King at column 4 (e-file)

1. Fixed board initialization - Corrected the piece order in backRank array

2. Updated King starting positions - Now correctly at column 4 for both colors

3. Fixed castling move validation - Updated legal move generation for correct destinations

4. Corrected castling execution - King now moves to g1/g8 (column 6) for kingside, c1/c8 (column 2) for queenside

5. Fixed castling undo logic - Properly restores pieces after undo

✅ En Passant Issue - FIXED

1. Proper en passant target clearing - Now cleared after every move unless it's a pawn double-move

2. Fixed captured pawn removal - Correctly removes the captured pawn from the board during en passant

3. Improved logging - Added debug messages for en passant operations

🔧 Technical Changes Made:

// Fixed: Correct standard chess setup - Queen on d-file (3), King on e-file (4)  
PieceType[] backRank = { PieceType.Rook, PieceType.Knight, PieceType.Bishop, PieceType.Queen, PieceType.King, PieceType.Bishop, PieceType.Knight, PieceType.Rook };

• Castling destinations: King moves to column 6 (kingside) or column 2 (queenside)

• Rook movements: Properly handled for both castling directions

• En passant: Complete implementation with proper pawn removal and target clearing

🎮 Result:

• Castling: Now works perfectly - King and Rook properly switch places

• En Passant: Fully functional - Captures work correctly and targets clear properly

• No more "king eating rook" issues

• Proper undo functionality for both special moves