Sorry
@blackzombie I forgot to address your question.
Answer: I do not know (and I'm not going to hijack this topic about "suggestions for variants" with my ideas).
I would also like to see a chaturanga variant on lichess.
I was browsing a chess-variants page for minor rule changes which sounded like they would make for interesting games. The following stood out:
Accelerated chess: Make one capturing move or two non-capturing moves per turn.
Rifle chess: You capture by removing the opponent's piece without moving your own.
Archimedes chess: Sort of like rifle chess. A piece is captured if it is attacked by two pieces simultaneously.
Cylinder chess: The sides of the board wrap (so a1 is next to h1).
Patzer chess: If you can check your opponent's king, you must.
An interesting mechanic is "all-in chess", where in any one turn a player can move a piece of any colour (and there is a rule that the last move cannot be undone). I'm not entirely sure this would lead to an interesting game though.
Dice chess is also a somewhat popular variant (roll a dice to determine what type of piece to move).
An interesting chess variant would be ''Extinction chess''. Instead of checkmate as the winning condition, the object of the game is the elimination of all of a particular kind of piece of the opponent. In other words, the objective is any of the following:
capture the opponent's king;
capture the opponent's queen;
capture both of the opponent's rooks;
capture both of the opponent's bishops;
capture both of the opponent's knights;
eliminate all of the opponent's pawns, by capturing or promoting (a promoted pawn is considered no longer a pawn).
#14 Crazy! Have you tried playing it?
#15 ,I didn't played it,but in Youtube this variant played ChessWhiz Tv.Anyways this variant sounds good and playable.
@risky-chess It would be an interesting variant to play :)
I will search for some other ideas tomorrow.