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

EGTB: draw

# move score
1 f6 draw
2 Re7 draw
3 Rf6 draw
4 Ra7 loss in 2 half-moves
5 Rb7 loss in 2 half-moves
6 Rc7 loss in 2 half-moves
7 Rd7 loss in 2 half-moves
8 Rf8 loss in 2 half-moves
9 Rg7 loss in 2 half-moves
10 Rh7 loss in 2 half-moves