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

EGTB: win in 1 half-moves

# move score
1 B4xd5 win in 3 half-moves
2 B6xd5 win in 3 half-moves
3 Bxa6 loss in 2 half-moves
4 Rxa6 loss in 2 half-moves