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

EGTB: win in 4 half-moves

# move score
1 Kb4 win in 3 half-moves
2 Kb5 win in 3 half-moves
3 Kb6 win in 3 half-moves
4 Kcd5 win in 3 half-moves
5 Kcd6 win in 3 half-moves
6 Kd4 win in 3 half-moves
7 Rb7 win in 3 half-moves
8 Rd7 win in 3 half-moves
9 Kc6 win in 5 half-moves
10 Rc6 win in 5 half-moves
11 Kd7 win in 7 half-moves
12 Ked6 win in 7 half-moves
13 Kc4 win in 9 half-moves
14 Ke7 win in 9 half-moves
15 Ra7 win in 9 half-moves
16 Ke5 draw
17 Ked5 draw
18 Rc8 draw
19 Re7 draw
20 Kf5 loss in 2 half-moves
21 Kf6 loss in 2 half-moves
22 Kf7 loss in 2 half-moves
23 Rf7 loss in 2 half-moves
24 Rg7 loss in 2 half-moves
25 Rh7 loss in 2 half-moves