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

EGTB: win in 4 half-moves

# move score
1 Kb4 win in 3 half-moves
2 Ka4 draw
3 Ka6 draw
4 Kb5 draw
5 Kb6 draw
6 Kd1 draw
7 Kd2 draw
8 Kf1 draw
9 Ra8 draw
10 Rb8 draw
11 Rc8 draw
12 Rd1 draw
13 Rd2 draw
14 Rd3 draw
15 Rd7 draw
16 Re8 draw
17 Rf8 draw
18 Ke2 loss in 2 half-moves
19 Kf2 loss in 2 half-moves
20 Rd4 loss in 2 half-moves
21 Rd5 loss in 2 half-moves
22 Rd6 loss in 2 half-moves
23 Rg8 loss in 2 half-moves
24 Rh8 loss in 2 half-moves