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

EGTB: win in 2 half-moves

# move score
1 Ra2 win in 1 half-moves
2 Ka7 draw
3 Ka8 draw
4 Kb7 draw
5 Ra3 draw
6 Ra5 draw
7 Ra8 draw
8 Rb4 draw
9 Rc4 draw
10 Rd4 draw
11 Re4 draw
12 Kc7 loss in 2 half-moves
13 Kc8 loss in 2 half-moves
14 Ra1 loss in 2 half-moves
15 Ra6 loss in 2 half-moves
16 Ra7 loss in 2 half-moves
17 Rf4 loss in 2 half-moves
18 Rg4 loss in 2 half-moves
19 Rh4 loss in 2 half-moves