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

EGTB: draw

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