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

EGTB: win in 2 half-moves

# move score
1 Ra3 win in 1 half-moves
2 Ka7 draw
3 Kb1 draw
4 Kb2 draw
5 Kc2 draw
6 Kd1 draw
7 Kd2 draw
8 Ra2 draw
9 Ra4 draw
10 Ra5 draw
11 Ra6 draw
12 Kb7 loss in 2 half-moves
13 Kb8 loss in 2 half-moves
14 Ra7 loss in 2 half-moves
15 Rb1 loss in 2 half-moves