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

EGTB: win in 4 half-moves

# move score
1 Re8 win in 3 half-moves
2 Kc7 win in 5 half-moves
3 Ra7 win in 5 half-moves
4 Ka7 win in 9 half-moves
5 Kd7 win in 9 half-moves
6 Rd8 win in 9 half-moves
7 Rg8 win in 11 half-moves
8 Rh8 win in 11 half-moves
9 Kc6 draw
10 Kd5 draw
11 Ke5 draw
12 Ke6 draw
13 Ke7 draw
14 Rc8 draw
15 Rf8 draw
16 Ka5 loss in 2 half-moves
17 Kb5 loss in 2 half-moves
18 Kb6 loss in 2 half-moves
19 Kb7 loss in 2 half-moves
20 Kc5 loss in 2 half-moves
21 Rb8 loss in 2 half-moves