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

EGTB: win in 4 half-moves

# move score
1 f7 win in 3 half-moves
2 Ra3 draw
3 Ra4 draw
4 Ra5 draw
5 Ra6 draw
6 Ra7 draw
7 Rb8 draw
8 Rf8 draw
9 Rg8 draw
10 Rh8 draw
11 Ra1 loss in 2 half-moves
12 Ra2 loss in 2 half-moves
13 Rc8 loss in 2 half-moves
14 Rd8 loss in 2 half-moves
15 Re8 loss in 2 half-moves