A (non-capturing) move up to half-way the board is fmW* in the Diagram. You could make that an ifmW* if it is only from the initial position. A Pawn with such a move would also have been in stock, as 'omega pawn'. On such very deep boards the e.p. capture would not completely work, though, as the Diagram handles at most two e.p. squares. (The AI should do it correctly, though.)
A (non-capturing) move up to half-way the board is fmW* in the Diagram. You could make that an ifmW* if it is only from the initial position. A Pawn with such a move would also have been in stock, as 'omega pawn'. On such very deep boards the e.p. capture would not completely work, though, as the Diagram handles at most two e.p. squares. (The AI should do it correctly, though.)