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

EGTB: win in 4 half-moves

# move score
1 Kb3 win in 3 half-moves
2 Kb5 win in 3 half-moves
3 Kc5 win in 3 half-moves
4 Kd5 win in 3 half-moves
5 Kb4 win in 5 half-moves
6 Kc3 win in 5 half-moves
7 Kd3 win in 5 half-moves
8 Ra3 win in 5 half-moves
9 Rb4 win in 5 half-moves
10 Kd4 win in 7 half-moves
11 Ra1 win in 7 half-moves
12 Ra2 win in 7 half-moves
13 Ra7 win in 7 half-moves
14 Ra8 draw
15 Ra5 loss in 2 half-moves
16 Ra6 loss in 2 half-moves