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

EGTB: win in 4 half-moves

# move score
1 Kb6 win in 3 half-moves
2 Kb7 win in 3 half-moves
3 Kb8 win in 3 half-moves
4 Kf8 win in 5 half-moves
5 Rf8 win in 5 half-moves
6 Kc6 draw
7 Kc8 draw
8 Kcd7 draw
9 Kcd8 draw
10 Kd6 draw
11 Ked8 draw
12 Rg5 draw
13 Rg7 draw
14 Rh8 draw
15 Ke7 loss in 2 half-moves
16 Ked7 loss in 2 half-moves
17 Kf7 loss in 2 half-moves
18 Rg1 loss in 2 half-moves
19 Rg2 loss in 2 half-moves
20 Rg3 loss in 2 half-moves
21 Rg4 loss in 2 half-moves
22 Rg6 loss in 2 half-moves