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

EGTB: win in 4 half-moves

# move score
1 Kc7 win in 3 half-moves
2 Rc7 win in 3 half-moves
3 Rb8 win in 7 half-moves
4 Ra8 win in 9 half-moves
5 Ka4 draw
6 Ka6 draw
7 Kab5 draw
8 Kab6 draw
9 Kb4 draw
10 Kc5 draw
11 Rh8 draw
12 Kb7 loss in 2 half-moves
13 Kcb5 loss in 2 half-moves
14 Kcb6 loss in 2 half-moves
15 Kd5 loss in 2 half-moves
16 Kd6 loss in 2 half-moves
17 Kd7 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