Originally posted by BigDoggProblem
Bonus: e3xf4 is possible w/o Ne8 on the board.[/b]
Explain (just for experience);
how the Knight got to a1?
it must have been there before the Queened pawn,because it has to have moved from b3 or c2. Both are blocked now by pawns; one that must have been released from the a-file by a capture.
So before the a-pawn got to the end, the capture must have occured, meaning the Knight must have got there before this, becasue it is when the blocking of b3 occured and closed it's way in. How does it work?
EDIT: Does that make sense?