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

EGTB: win in 4 half-moves

# move score
1 Rb7 win in 3 half-moves
2 Kb7 win in 5 half-moves
3 Kdc8 win in 7 half-moves
4 Kdd7 win in 7 half-moves
5 Ra8 win in 7 half-moves
6 Ra4 draw
7 Kb6 loss in 2 half-moves
8 Kb8 loss in 2 half-moves
9 Kc6 loss in 2 half-moves
10 Kcc8 loss in 2 half-moves
11 Kcd7 loss in 2 half-moves
12 Kd6 loss in 2 half-moves
13 Ke7 loss in 2 half-moves
14 Ke8 loss in 2 half-moves
15 Ra1 loss in 2 half-moves
16 Ra2 loss in 2 half-moves
17 Ra3 loss in 2 half-moves
18 Ra5 loss in 2 half-moves
19 Ra6 loss in 2 half-moves