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

EGTB: win in 4 half-moves

# move score
1 Rg8 win in 3 half-moves
2 Kff6 win in 7 half-moves
3 Kg6 win in 7 half-moves
4 Kg7 win in 7 half-moves
5 Kg8 win in 7 half-moves
6 Ra8 win in 7 half-moves
7 Rf8 win in 7 half-moves
8 Rh8 win in 7 half-moves
9 Kee6 draw
10 Kfe6 draw
11 Kff8 draw
12 Rb8 draw
13 Kd6 loss in 2 half-moves
14 Kd7 loss in 2 half-moves
15 Kd8 loss in 2 half-moves
16 Kef6 loss in 2 half-moves
17 Kef8 loss in 2 half-moves
18 Rc8 loss in 2 half-moves
19 Rd8 loss in 2 half-moves