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

EGTB: win in 1 half-moves

# move score
1 a8=B win in 9 half-moves
2 a8=K draw
3 a8=R draw
4 Na3 draw
5 Nc3 draw
6 Nc7 draw
7 Nd4 draw
8 Nd6 draw
9 a8=Q loss in 4 half-moves
10 a8=N loss in 3 half-moves