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

EGTB: win in 4 half-moves

# move score
1 Kc6 win in 3 half-moves
2 Kdc7 win in 3 half-moves
3 Kdc8 win in 3 half-moves
4 Ke6 win in 3 half-moves
5 Ke7 win in 3 half-moves
6 Ke8 win in 3 half-moves
7 Rc8 win in 3 half-moves
8 Re8 win in 3 half-moves
9 Ka7 draw
10 Ka8 draw
11 Kb7 draw
12 Kbc7 draw
13 Kbc8 draw
14 Kd6 draw
15 Rf8 draw
16 Rg8 loss in 2 half-moves
17 Rh8 loss in 2 half-moves