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 Kd7 win in 3 half-moves
3 Rd8 win in 3 half-moves
4 Ka2 draw
5 Ka3 draw
6 Ka4 draw
7 Kb2 draw
8 Kb4 draw
9 Kb8 draw
10 Kc2 draw
11 Kc3 draw
12 Kc4 draw
13 Kd8 draw
14 Re8 draw
15 Rf4 draw
16 Rf5 draw
17 Rf6 draw
18 Rf7 draw
19 Kb7 loss in 2 half-moves
20 Rf1 loss in 2 half-moves
21 Rf2 loss in 2 half-moves
22 Rf3 loss in 2 half-moves
23 Rg8 loss in 2 half-moves
24 Rh8 loss in 2 half-moves