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

EGTB: win in 2 half-moves

# move score
1 Ra4 win in 1 half-moves
2 Ka7 draw
3 Kb7 draw
4 Kb8 draw
5 Ra5 draw
6 Ra6 draw
7 Rb3 draw
8 Rc3 draw
9 Rd3 draw
10 Re3 draw
11 Ra1 loss in 2 half-moves
12 Ra2 loss in 2 half-moves
13 Ra7 loss in 2 half-moves
14 Rf3 loss in 2 half-moves
15 Rg3 loss in 2 half-moves
16 Rh3 loss in 2 half-moves