If I play chess, and someone changes the rules so pawns can now move in any direction, and rooks can now move diagonally, and kings can now move any number of squares, am I still playing chess?
That said, if you say to the person you are playing against, "But those are just optional rules. You don't HAVE to play it that way. I am, but you don't have to. It's up to you if you want to challenge yourself that way or not."
Do you think the other player is going to not use the new rules when the entire game is now designed around the new rules?
