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 Kc6 win in 3 half-moves
3 Kd6 win in 3 half-moves
4 Ra4 win in 3 half-moves
5 Ra6 win in 3 half-moves
6 Ra7 win in 5 half-moves
7 Ra8 win in 15 half-moves
8 Kb4 draw
9 Kb5 draw
10 Kc4 draw
11 Kc7 draw
12 Kc8 draw
13 Kd4 draw
14 Kd5 draw
15 Kd7 draw
16 Ke7 draw
17 Ke8 draw
18 Ra3 draw
19 Rb5 draw
20 Ra1 loss in 2 half-moves
21 Ra2 loss in 2 half-moves