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

EGTB: win in 2 half-moves

# move score
1 Rf8 win in 1 half-moves
2 Ka7 draw
3 Kh6 draw
4 Kh8 draw
5 Rb1 draw
6 Rb2 draw
7 Rb3 draw
8 Rb7 draw
9 Rh8 draw
10 Kb7 loss in 2 half-moves
11 Kg6 loss in 2 half-moves
12 Kg7 loss in 2 half-moves
13 Kg8 loss in 2 half-moves
14 Rb4 loss in 2 half-moves
15 Rb5 loss in 2 half-moves
16 Rb6 loss in 2 half-moves
17 Rc8 loss in 2 half-moves
18 Rd8 loss in 2 half-moves
19 Re8 loss in 2 half-moves
20 Rg8 loss in 2 half-moves