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

EGTB: win in 1 half-moves

# move score
1 Rxf7 win in 3 half-moves
2 Rbxb4 win in 11 half-moves
3 Bxb4 loss in 2 half-moves
4 Rhxb4 loss in 2 half-moves