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

EGTB: win in 4 half-moves

# move score
1 Ka5 win in 3 half-moves
2 Kb5 win in 3 half-moves
3 Kb7 win in 3 half-moves
4 Kc7 win in 3 half-moves
5 Ra5 win in 3 half-moves
6 Ra7 win in 3 half-moves
7 Rb6 win in 7 half-moves
8 Kd7 win in 13 half-moves
9 Ra8 win in 25 half-moves
10 Kd8 win in 35 half-moves
11 Kb8 win in 39 half-moves
12 Ka3 draw
13 Kb3 draw
14 Kb4 draw
15 Rc6 draw
16 Rd6 draw
17 Rh6 draw
18 Re6 loss in 2 half-moves
19 Rf6 loss in 2 half-moves
20 Rg6 loss in 2 half-moves