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

EGTB: win in 4 half-moves

# move score
1 Ka6 win in 3 half-moves
2 Kb6 win in 3 half-moves
3 Kd7 win in 3 half-moves
4 Kb5 win in 5 half-moves
5 Rh5 win in 5 half-moves
6 Rh6 win in 5 half-moves
7 Rh7 win in 17 half-moves
8 Ka4 draw
9 Kc7 draw
10 Kc8 draw
11 Ke7 draw
12 Ke8 draw
13 Rg8 draw
14 Rh3 draw
15 Rh4 draw
16 Kb4 loss in 2 half-moves
17 Re8 loss in 2 half-moves
18 Rf8 loss in 2 half-moves
19 Rh1 loss in 2 half-moves
20 Rh2 loss in 2 half-moves