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 Kc6 win in 3 half-moves
3 Kd6 win in 3 half-moves
4 Kf7 win in 3 half-moves
5 Kd5 win in 5 half-moves
6 Rg6 win in 5 half-moves
7 Kb5 draw
8 Ke7 draw
9 Ke8 draw
10 Kg7 draw
11 Rg3 draw
12 Rg4 draw
13 Rg5 draw
14 Rg7 draw
15 Rh8 draw
16 Kb4 loss in 2 half-moves
17 Kc4 loss in 2 half-moves
18 Kd4 loss in 2 half-moves
19 Rg1 loss in 2 half-moves
20 Rg2 loss in 2 half-moves