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

EGTB: win in 2 half-moves

# move score
1 Ra7 win in 1 half-moves
2 Ka2 draw
3 Ka3 draw
4 Ka4 draw
5 Kb2 draw
6 Kb4 draw
7 Ra1 draw
8 Ra3 draw
9 Ra5 draw
10 Ra6 draw
11 Rb8 draw
12 Rc8 draw
13 Kc3 loss in 8 half-moves
14 Kc2 loss in 6 half-moves
15 Kc4 loss in 6 half-moves
16 Rd8 loss in 4 half-moves
17 Re8 loss in 4 half-moves
18 Ra2 loss in 2 half-moves
19 Ra4 loss in 2 half-moves
20 Rf8 loss in 2 half-moves
21 Rh8 loss in 2 half-moves
22 Rg8 loss in 1 half-moves