Here are some ideas
1mystery chess room on site where you play vetted but unknown opponents -no name no rating 'til after the game-some sea swim races are handicapped after the race in a similar way after the race.
2 a game where pawns can move forward and back
3 a game where you are allowed two moves in a row just once in a game
4 game where you can take your own pieces if you wish.
5 a game where the king has the same mobility as the queen
6 a game where bishops can change diagonal colour.
7 a game where pawns move like one square knights
8 a game where en passant applies everywhere
9.a game where rooks and bishops can both move diagonally horizontal vertical and also change diagonal colouors as suggested in #6
Here are some ideas
1mystery chess room on site where you play vetted but unknown opponents -no name no rating 'til after the game-some sea swim races are handicapped after the race in a similar way after the race.
2 a game where pawns can move forward and back
3 a game where you are allowed two moves in a row just once in a game
4 game where you can take your own pieces if you wish.
5 a game where the king has the same mobility as the queen
6 a game where bishops can change diagonal colour.
7 a game where pawns move like one square knights
8 a game where en passant applies everywhere