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

EGTB: win in 4 half-moves

# move score
1 Ra7 win in 3 half-moves
2 Ra8 win in 3 half-moves
3 Ra6 win in 5 half-moves
4 Kd7 draw
5 Kd8 draw
6 Ke7 draw
7 Kef7 draw
8 Kef8 draw
9 Kf6 draw
10 Kg6 draw
11 Kg8 draw
12 Kgf7 draw
13 Kgf8 draw
14 Kh6 draw
15 Kh7 draw
16 Kh8 draw
17 Ra3 draw
18 Ra5 draw
19 Rb4 draw
20 Rc4 draw
21 Rd4 draw
22 Rh4 draw
23 Ra1 loss in 2 half-moves
24 Ra2 loss in 2 half-moves
25 Re4 loss in 2 half-moves
26 Rf4 loss in 2 half-moves
27 Rg4 loss in 2 half-moves