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

EGTB: win in 4 half-moves

# move score
1 Kb6 win in 3 half-moves
2 Ke7 win in 3 half-moves
3 Ka6 win in 5 half-moves
4 Kc6 win in 5 half-moves
5 Rh7 win in 7 half-moves
6 Ka4 draw
7 Ka5 draw
8 Kb4 draw
9 Kc4 draw
10 Kd7 draw
11 Kf8 draw
12 Rf8 draw
13 Rg8 draw
14 Rh4 draw
15 Kc5 loss in 2 half-moves
16 Kf7 loss in 2 half-moves
17 Rh1 loss in 2 half-moves
18 Rh2 loss in 2 half-moves
19 Rh3 loss in 2 half-moves
20 Rh5 loss in 2 half-moves
21 Rh6 loss in 2 half-moves
22 Kd8 loss in 1 half-moves