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

EGTB: win in 4 half-moves

# move score
1 Kb5 win in 3 half-moves
2 Rb5 win in 3 half-moves
3 Kc3 win in 9 half-moves
4 Kcd5 win in 9 half-moves
5 Kd3 win in 9 half-moves
6 Kdc4 win in 9 half-moves
7 Kdd5 win in 9 half-moves
8 Ke3 win in 9 half-moves
9 Ke4 win in 9 half-moves
10 Ra4 win in 9 half-moves
11 Ra1 draw
12 Kb4 loss in 2 half-moves
13 Kb6 loss in 2 half-moves
14 Kc6 loss in 2 half-moves
15 Kcc4 loss in 2 half-moves
16 Kd6 loss in 2 half-moves
17 Ke5 loss in 2 half-moves
18 Ra2 loss in 2 half-moves
19 Ra3 loss in 2 half-moves
20 Ra6 loss in 2 half-moves
21 Ra7 loss in 2 half-moves
22 Ra8 loss in 2 half-moves