Joker chess :)

Yes, the idea was so simple and obvious that I thought someone else has thought it too. But I cook up this myself to myself 

Yeah, that's the problem with chess variants. So many people trying to invent them that whenever you come up with one someone else is sure to have though of it first. 

Stupid new game idea: secret agents chess.  Both has one more extra pawn in other side. They can move like other side's pawns but of course white agen plays for white and black for black.

its joker cuz you can use the joker any piece you want. extra queen extra rook ect

kinda like poker

Ok, but there in Secret Agent's chess  it can be only used as a pawn in enemies side. How in other Joker Chess? Where is the extra piece's situation, it's place in start?

And that is the only situation in enemies side i think: f2 and f7, it agent where somewhere else it could be beated right away, but not now: if King beat it then it can not be castled anymore.

Found a cool game about the Joker https://chromedino.com/joker/, look, it's fun to kill time)

I want to play chess with Sudoku elements (as http://sudokuhit.com/). Is there such an implementation?