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

EGTB: win in 4 half-moves

# move score
1 Rd8 win in 3 half-moves
2 Ka6 win in 5 half-moves
3 Kc6 win in 5 half-moves
4 Kd7 win in 5 half-moves
5 Kc8 win in 7 half-moves
6 Kd6 win in 7 half-moves
7 Kd8 win in 7 half-moves
8 Rc8 win in 15 half-moves
9 Kab6 draw
10 Kab7 draw
11 Kab8 draw
12 Kcb6 draw
13 Kcb7 draw
14 Kcb8 draw
15 Rb8 draw
16 Re8 draw
17 Rf8 loss in 2 half-moves
18 Rg8 loss in 2 half-moves
19 Rh8 loss in 2 half-moves