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 Ka4 draw
3 Ka6 draw
4 Kd6 draw
5 Kd7 draw
6 Ke7 draw
7 Kf6 draw
8 Kf7 draw
9 Ra6 draw
10 Ra8 draw
11 Rb7 draw
12 Re7 draw
13 Rh7 draw
14 Kb4 loss in 2 half-moves
15 Kb5 loss in 2 half-moves
16 Kd5 loss in 2 half-moves
17 Ke5 loss in 2 half-moves
18 Kf5 loss in 2 half-moves
19 Rc7 loss in 2 half-moves
20 Rd7 loss in 2 half-moves
21 Rf7 loss in 2 half-moves
22 Rg7 loss in 2 half-moves