Bughouse Chess seems like an option. Bughouse is played on two boards. Pieces captured on one board can be placed on the other board. Bughouse is rather popular with strong chess players. Traditionally bughouse is played in teams of two. But nothing is stopping you from having one player play both of their boards. Given its popularity, it seems like an attractive option. Though you have to order the turns WhiteA, WhiteB, BlackB, BlackA.
Bughouse Chess seems like an option. Bughouse is played on two boards. Pieces captured on one board can be placed on the other board. Bughouse is rather popular with strong chess players. Traditionally bughouse is played in teams of two. But nothing is stopping you from having one player play both of their boards. Given its popularity, it seems like an attractive option. Though you have to order the turns WhiteA, WhiteB, BlackB, BlackA.