4 player chess

It's chess but for 4 players it is played on an 11x11 board and each player has a king, bishop, knight, rook and 5 pawns.

Players take turns in clockwise order starting from red the rules are in the game, there is a pass button but it is only for mistakes not for regular play. Also when promoting pawns type the following letters for the pieces q- queen,  k- king, b- bishop, n- knight, r- rook. When capturing it may not work if you click directly on the piece you want to capture so press in the corners of the square it is in if this happens.

Rules:

• No castling.
• Pawn promotions are allowed in either direction the pawn can move.
• No en passant.
• Pieces move normally, except pawns, which move in an extra direction and capture in an extra direction.
• Pawns can jump on their first double move.
• You can have multiple kings.
• You lose when all your kings die.
• When you lose, the remaining players keep playing, but your pieces stay on the board. They can no longer be moved, but they can still be captured.
• If you capture an enemy king, that king becomes your king.
• After capturing an enemy king, you get an extra turn. In this turn, you must either move your new king or the piece you used to capture it.