Black
-
1
2
3
4
5
6
7
8
a
b
c
d
e
f
g
h
White
-
While visually the Black King is in the square, everything changes after White's first move.
1.
a4
...
The pawn jumping two steps leaves the King out of the square.
1.
...
Kf4
2.
a5
Ke5
3.
a6
Kd6
4.
a7
Kc7
5.
a8=Q