Click on the third or sixth rank to set the en passant target square.

EGTB: win in 1 half-moves

# move score
1 a8=N win in 3 half-moves
2 a8=K draw
3 Nb3 loss in 4 half-moves
4 Nb7 loss in 4 half-moves
5 a8=B loss in 2 half-moves
6 a8=Q loss in 2 half-moves
7 a8=R loss in 2 half-moves
8 Na4 loss in 2 half-moves
9 Na6 loss in 2 half-moves
10 Nd3 loss in 2 half-moves
11 Nd7 loss in 2 half-moves
12 Ne4 loss in 2 half-moves
13 Ne6 loss in 2 half-moves