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

EGTB: win in 2 half-moves

# move score
1 Rh4 win in 1 half-moves
2 Ka5 draw
3 Ra1 draw
4 Ra2 draw
5 Ra3 draw
6 Ra5 draw
7 Ra7 draw
8 Rb4 draw
9 Rc4 draw
10 Kb4 loss in 8 half-moves
11 Kb6 loss in 6 half-moves
12 Ka6 loss in 4 half-moves
13 Kc4 loss in 2 half-moves
14 Kc5 loss in 2 half-moves
15 Kc6 loss in 2 half-moves
16 Ra6 loss in 2 half-moves
17 Ra8 loss in 2 half-moves
18 Rd4 loss in 2 half-moves
19 Re4 loss in 2 half-moves
20 Rf4 loss in 2 half-moves
21 Rg4 loss in 2 half-moves