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 Kd6 win in 5 half-moves
3 Ka5 draw
4 Ka7 draw
5 Kc6 draw
6 Kcb5 draw
7 Kcb6 draw
8 Rc8 draw
9 Re8 draw
10 Kab5 loss in 2 half-moves
11 Kab6 loss in 2 half-moves
12 Kb4 loss in 2 half-moves
13 Kb7 loss in 2 half-moves
14 Kc4 loss in 2 half-moves
15 Kd4 loss in 2 half-moves
16 Kd5 loss in 2 half-moves
17 Rb8 loss in 2 half-moves
18 Rd8 loss in 2 half-moves
19 Rf8 loss in 2 half-moves
20 Rg8 loss in 2 half-moves
21 Rh8 loss in 2 half-moves