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

EGTB: win in 4 half-moves

# move score
1 Kb5 win in 3 half-moves
2 Ka5 draw
3 Ka7 draw
4 Kb6 draw
5 Kb7 draw
6 Kd2 draw
7 Kd3 draw
8 Ke2 draw
9 Kf2 draw
10 Kf3 draw
11 Ra1 draw
12 Ra3 draw
13 Ra4 draw
14 Rb2 draw
15 Rc2 draw
16 Rd2 draw
17 Re2 draw
18 Rh2 draw
19 Kd4 loss in 2 half-moves
20 Ke4 loss in 2 half-moves
21 Kf4 loss in 2 half-moves
22 Ra5 loss in 2 half-moves
23 Rf2 loss in 2 half-moves
24 Rg2 loss in 2 half-moves