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

EGTB: win in 4 half-moves

# move score
1 Kg5 win in 3 half-moves
2 Kg6 win in 3 half-moves
3 Kg7 win in 3 half-moves
4 Kb6 win in 7 half-moves
5 Kd6 win in 7 half-moves
6 Rc7 win in 7 half-moves
7 Kd7 win in 9 half-moves
8 Kb7 draw
9 Kc7 draw
10 Kh5 draw
11 Ra7 draw
12 Re7 draw
13 Rf7 draw
14 Rg7 draw
15 Rh8 draw
16 Kb5 loss in 2 half-moves
17 Kc5 loss in 2 half-moves
18 Kd5 loss in 2 half-moves
19 Rb7 loss in 2 half-moves
20 Rd7 loss in 2 half-moves