This is a very interesting rule for the second-wave Pawns (Rows 3 & 14). I've been trying to think of how they'd behave in an Interactive Diagram; I think the easiest way would be to treat them as Mongolian Pawns that automatically morph into standard Pawns at Row 6/11. I'm just not sure whether they'd get the double move from there (unless the imnfD was replaced with iimnfD).
This is a very interesting rule for the second-wave Pawns (Rows 3 & 14). I've been trying to think of how they'd behave in an Interactive Diagram; I think the easiest way would be to treat them as Mongolian Pawns that automatically morph into standard Pawns at Row 6/11. I'm just not sure whether they'd get the double move from there (unless the imnfD was replaced with iimnfD).