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

EGTB: win in 4 half-moves

# move score
1 Ra7 win in 3 half-moves
2 Kb2 win in 7 half-moves
3 Kb3 win in 7 half-moves
4 Kb4 win in 7 half-moves
5 Kc4 win in 7 half-moves
6 Kc6 win in 7 half-moves
7 Ra3 win in 7 half-moves
8 Ra1 win in 11 half-moves
9 Ra8 win in 11 half-moves
10 Ka5 draw
11 Ka7 draw
12 Kb5 draw
13 Kb7 draw
14 Kc2 draw
15 Kc5 draw
16 Kc7 draw
17 Ra2 draw
18 Kd2 loss in 2 half-moves
19 Kd3 loss in 2 half-moves
20 Kd4 loss in 2 half-moves
21 Ra4 loss in 2 half-moves
22 Ra5 loss in 2 half-moves