Comments/Ratings for a Single Item

When a Pawn makes a double move that takes it past a square under attack by
an enemy Pawn, the enemy Pawn may move to that square on the next turn,
capturing the Pawn that just passed over it. That is called an en passant
capture, which is French for in passing. The right to capture a Pawn by en
passant may be used only on the turn immediately following that Pawn's
double move. If not used immediately, it is lost.

What I don't understand is how the concept of en passant translates to
other pieces. Some examples would help.

The game of en passant chess was mostly phil cohen's, it seems to me,
although Pritchard may likely credit me as it was first published in my
Nost/Algia column in the early 1970s.

Your game called by the same name has some interesting rules that make N
into NN and K into K + sometimes-N. There is no real design reason for the
K enhancement, but I'd bet that you included it because of playtesting.

Using Knightriders so that the N can be captured e. p. seems reasonable.

However, this game should probably be renamed Kurnia's En Passant Chess,
because there is already a game named simply En Passant Chess.