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

EGTB: win in 4 half-moves

# move score
1 Kb5 win in 3 half-moves
2 Kb6 win in 9 half-moves
3 Rb3 win in 9 half-moves
4 Kc2 win in 11 half-moves
5 Kc3 win in 11 half-moves
6 Kc4 win in 11 half-moves
7 Ka5 win in 15 half-moves
8 Ka7 draw
9 Kb7 draw
10 Kd2 draw
11 Kd4 draw
12 Ke2 draw
13 Ra1 draw
14 Ra2 draw
15 Rc3 draw
16 Ke3 loss in 2 half-moves
17 Ke4 loss in 2 half-moves
18 Ra4 loss in 2 half-moves
19 Ra5 loss in 2 half-moves