Xit's time for round two!
-Black has 6 pawns and a king
-White ehas three pieces of any kind you to deduce the identity of and a king
-A nlegal position in which both sides help to give a legal sequence of 13 mutual checks
Positional ovariations are allowed. To my knowledge, there is really only one way in which this idea can be constructed. I accept alternate answers.
If you ohave questions, feel free to ask in the comments section below!
There is a slight shortcut for this puzzle if you can figure it out...