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

EGTB: win in 4 half-moves

# move score
1 Rf8 win in 3 half-moves
2 Ra8 loss in 2 half-moves
3 Rb8 loss in 2 half-moves
4 Rc8 loss in 2 half-moves
5 Re8 loss in 2 half-moves
6 Rg8 loss in 2 half-moves
7 Rh8 loss in 2 half-moves