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 Kb2 win in 5 half-moves
3 Kb1 draw
4 Kb6 draw
5 Kb7 draw
6 Kc5 draw
7 Kc7 draw
8 Kd5 draw
9 Kd6 draw
10 Kd7 draw
11 Ra1 draw
12 Ra3 draw
13 Ra4 draw
14 Ra5 draw
15 Ra7 draw
16 Ra8 draw
17 Rb6 draw
18 Kc2 loss in 2 half-moves
19 Kd1 loss in 2 half-moves
20 Kd2 loss in 2 half-moves
21 Ra2 loss in 2 half-moves