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 Rb6 win in 3 half-moves
3 Rc6 win in 3 half-moves
4 Kb3 win in 5 half-moves
5 Kb4 win in 5 half-moves
6 Ra8 win in 5 half-moves
7 Kb7 win in 9 half-moves
8 Ka3 win in 11 half-moves
9 Ka5 draw
10 Kb6 draw
11 Kb8 draw
12 Kc6 draw
13 Kc8 draw
14 Kd7 draw
15 Kd8 draw
16 Ra7 draw
17 Rd6 draw
18 Rh6 draw
19 Kd6 loss in 2 half-moves
20 Ra5 loss in 2 half-moves
21 Re6 loss in 2 half-moves
22 Rf6 loss in 2 half-moves
23 Rg6 loss in 2 half-moves