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 Kb5 win in 3 half-moves
3 Rb4 win in 3 half-moves
4 Rc4 win in 3 half-moves
5 Kcc4 win in 7 half-moves
6 Ra6 win in 7 half-moves
7 Kb6 draw
8 Kc6 draw
9 Kcd5 draw
10 Kd6 draw
11 Kdc4 draw
12 Ra2 draw
13 Ra5 draw
14 Ra7 draw
15 Ra8 draw
16 Kc3 loss in 2 half-moves
17 Kd3 loss in 2 half-moves
18 Kdd5 loss in 2 half-moves
19 Ke3 loss in 2 half-moves
20 Ke4 loss in 2 half-moves
21 Ke5 loss in 2 half-moves
22 Ra1 loss in 2 half-moves
23 Ra3 loss in 2 half-moves