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 Ra8 draw
3 Rb8 draw
4 Rc3 draw
5 Rc4 draw
6 Rc5 draw
7 Rc6 draw
8 Rc7 draw
9 Rd8 draw
10 Re8 draw
11 Rf8 draw
12 Rc1 loss in 2 half-moves
13 Rc2 loss in 2 half-moves
14 Rg8 loss in 2 half-moves
15 Rh8 loss in 2 half-moves