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

EGTB: win in 4 half-moves

# move score
1 Ra5 win in 3 half-moves
2 Ra7 win in 3 half-moves
3 Kb6 draw
4 Kb7 draw
5 Kc8 draw
6 Kcc7 draw
7 Kcd7 draw
8 Kd6 draw
9 Kdc7 draw
10 Kdd7 draw
11 Ke7 draw
12 Ke8 draw
13 Ra4 draw
14 Ra8 draw
15 Kb5 loss in 2 half-moves
16 Kc5 loss in 2 half-moves
17 Kd5 loss in 2 half-moves
18 Ra1 loss in 2 half-moves
19 Ra2 loss in 2 half-moves
20 Ra3 loss in 2 half-moves
21 Rb6 loss in 2 half-moves