Chess.com should have kreigspiel. For those of you who don’t know how kriegspiel is played, or at least how I learned it’s played, kriegspiel is where you don’t know your opponent’s move. You know if there is check on the rank, file, short or long diagonal, or by a pawn or knight. You will ask at the start of your turn if there is any pawn captures. If the answer is yes, you must try one. To make your move ask if that move is legal. If it is legal, then that is your move. You know if your opponent has captured and where, but not the capturing piece.