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 Kc4 win in 3 half-moves
3 Kd4 win in 3 half-moves
4 Ka6 win in 5 half-moves
5 Ka7 win in 5 half-moves
6 Ka8 win in 5 half-moves
7 Kb3 win in 5 half-moves
8 Kb6 win in 9 half-moves
9 Kb2 draw
10 Kb8 draw
11 Kc2 draw
12 Kd2 draw
13 Kd3 draw
14 Ra1 draw
15 Ra2 draw
16 Ra4 draw
17 Ra5 draw
18 Ra6 draw
19 Ra7 draw
20 Rb3 draw
21 Kc6 loss in 2 half-moves
22 Kc7 loss in 2 half-moves
23 Kc8 loss in 2 half-moves
24 Ra8 loss in 2 half-moves