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

EGTB: win in 4 half-moves

# move score
1 Kb7 win in 3 half-moves
2 Kc7 win in 3 half-moves
3 Kcb5 win in 3 half-moves
4 Kd7 win in 3 half-moves
5 Rb4 win in 3 half-moves
6 Rb7 win in 3 half-moves
7 Kd6 win in 7 half-moves
8 Rb8 win in 7 half-moves
9 Ka4 draw
10 Ka6 draw
11 Kab5 draw
12 Kc5 draw
13 Kd5 draw
14 Ra6 draw
15 Rb5 draw
16 Kb4 loss in 2 half-moves
17 Rb1 loss in 2 half-moves
18 Rb2 loss in 2 half-moves
19 Rb3 loss in 2 half-moves