Play Capablanca's Chess with Jocly
Capablanca's Chess is played exactly like Chess except for the introduction of two new pieces, a couple extra Pawns, and a new castling rule. The two new pieces are the Archbishop (a compound of Bishop and Knight), which starts in the c file, and the Chancellor (a compound of Rook and Knight), which starts in the h file. The new castling rule is that the King moves three spaces toward the Rook when castling. Otherwise, the usual castling restrictions apply.
Contrary to the way that this game is normally implemented on Jocly, castling is handled by moving the King to the space it will move to, not to the Rook's space.