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

EGTB: win in 4 half-moves

# move score
1 Kd6 win in 3 half-moves
2 Kd7 win in 3 half-moves
3 Kef7 win in 3 half-moves
4 Rd8 win in 3 half-moves
5 Kff7 win in 5 half-moves
6 Kd8 draw
7 Ke6 draw
8 Kf6 draw
9 Kg7 draw
10 Kg8 draw
11 Rc8 draw
12 Ra8 loss in 2 half-moves
13 Rb8 loss in 2 half-moves