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

EGTB: win in 1 half-moves

# move score
1 bxa8=K win in 17 half-moves
2 bxa8=N loss in 26 half-moves
3 bxa8=B loss in 2 half-moves
4 bxa8=Q loss in 2 half-moves
5 bxa8=R loss in 2 half-moves