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

EGTB: win in 6 half-moves

# move score
1 Rb4 win in 5 half-moves
2 Kc7 win in 7 half-moves
3 Kb4 draw
4 Kc6 draw
5 Kd4 draw
6 Kdc5 draw
7 Kdd5 draw
8 Ra6 draw
9 Ra8 draw
10 Kb3 loss in 2 half-moves
11 Kb5 loss in 2 half-moves
12 Kc3 loss in 2 half-moves
13 Kcc5 loss in 2 half-moves
14 Kcd5 loss in 2 half-moves
15 Kd3 loss in 2 half-moves
16 Kd7 loss in 2 half-moves
17 Ke5 loss in 2 half-moves
18 Ke6 loss in 2 half-moves
19 Ke7 loss in 2 half-moves
20 Ra1 loss in 2 half-moves
21 Ra2 loss in 2 half-moves
22 Ra3 loss in 2 half-moves
23 Ra5 loss in 2 half-moves
24 Ra7 loss in 2 half-moves