Black
-
1
2
3
4
5
6
7
8
a
b
c
d
e
f
g
h
White
-
If the pawn's starting position is the same, they will promote at the same time.
1.
a4
g5
2.
a5
g4
3.
a6
g3
4.
a7
g2
5.
a8=Q
g1=Q