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

EGTB: win in 4 half-moves

# move score
1 Kb7 win in 3 half-moves
2 Kc4 win in 3 half-moves
3 Kc6 win in 3 half-moves
4 Kd6 win in 3 half-moves
5 Ke6 win in 3 half-moves
6 Rc5 win in 3 half-moves
7 Ra6 win in 5 half-moves
8 Ra7 win in 5 half-moves
9 Kb8 draw
10 Kc5 draw
11 Kc7 draw
12 Kd4 draw
13 Kd7 draw
14 Kd8 draw
15 Ke5 draw
16 Ra3 draw
17 Ra4 draw
18 Ra8 draw
19 Rb5 draw
20 Ke4 loss in 2 half-moves
21 Ra1 loss in 2 half-moves
22 Ra2 loss in 2 half-moves