I've enjoyed Alice Chess[1], which is played with two boards and on each move a piece on one board goes "through the looking glass" to wind up on the correspond

I've enjoyed Alice Chess[1], which is played with two boards and on each move a piece on one board goes "through the looking glass" to wind up on the corresponding position on the other board. Also fun was Suicide Chess[2], where the winner is the first to get all their own pieces captured. About 20 years ago, I found a book in The Strand which had collected something like 300 chess variants... I'm sure by now there are many more. [1] - https://en.wikipedia.org/wiki/Alice_chess https://en.wikipedia.org/wiki/Alice_chess [2] - https://en.wikipedia.org/wiki/Losing_chess https://en.wikipedia.org/wiki/Losing_chess