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

EGTB: win in 4 half-moves

# move score
1 Kd7 win in 3 half-moves
2 Rb7 win in 3 half-moves
3 Ka6 win in 5 half-moves
4 Ka7 win in 5 half-moves
5 Kb5 win in 5 half-moves
6 Kc6 win in 5 half-moves
7 Ra8 win in 5 half-moves
8 Rc8 win in 5 half-moves
9 Kc8 win in 9 half-moves
10 Ke8 win in 9 half-moves
11 Ka5 win in 13 half-moves
12 Kc5 win in 13 half-moves
13 Ke7 win in 17 half-moves
14 Kb7 draw
15 Kbc7 draw
16 Kdc7 draw