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

EGTB: win in 4 half-moves

# move score
1 Kab5 win in 3 half-moves
2 Kab6 win in 3 half-moves
3 Kb7 win in 3 half-moves
4 Rb8 win in 3 half-moves
5 Ka7 win in 5 half-moves
6 Ra7 win in 5 half-moves
7 Ka5 draw
8 Kb4 draw
9 Kc4 draw
10 Kc6 draw
11 Kcb5 draw
12 Kcb6 draw
13 Rc8 draw
14 Rh8 draw
15 Kd4 loss in 2 half-moves
16 Kd5 loss in 2 half-moves
17 Kd6 loss in 2 half-moves
18 Rd8 loss in 2 half-moves
19 Re8 loss in 2 half-moves
20 Rf8 loss in 2 half-moves
21 Rg8 loss in 2 half-moves