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

EGTB: win in 4 half-moves

# move score
1 Kb2 win in 3 half-moves
2 Kb3 win in 3 half-moves
3 Rb4 win in 3 half-moves
4 Kb4 win in 7 half-moves
5 Ka2 win in 9 half-moves
6 Kc4 win in 9 half-moves
7 Kc5 draw
8 Kd5 draw
9 Rc4 draw
10 Kc3 loss in 2 half-moves
11 Kd3 loss in 2 half-moves
12 Ke3 loss in 2 half-moves
13 Ke4 loss in 2 half-moves
14 Ke5 loss in 2 half-moves
15 Ra5 loss in 2 half-moves
16 Ra6 loss in 2 half-moves
17 Ra7 loss in 2 half-moves
18 Ra8 loss in 2 half-moves