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 Kf6 draw
4 Kg6 draw
5 Kh6 draw
6 Ra3 draw
7 Ra4 draw
8 Ra5 draw
9 Ra6 draw
10 Rb2 draw
11 Rg2 draw
12 Rh2 draw
13 Kc7 loss in 2 half-moves
14 Kc8 loss in 2 half-moves
15 Kd7 loss in 2 half-moves
16 Ke7 loss in 2 half-moves
17 Ke8 loss in 2 half-moves
18 Kf7 loss in 2 half-moves
19 Kf8 loss in 2 half-moves
20 Kg8 loss in 2 half-moves
21 Kh7 loss in 2 half-moves
22 Kh8 loss in 2 half-moves
23 Ra1 loss in 2 half-moves
24 Rc2 loss in 2 half-moves
25 Rd2 loss in 2 half-moves
26 Re2 loss in 2 half-moves
27 Rf2 loss in 2 half-moves