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

EGTB: win in 2 half-moves

# move score
1 Rb8 win in 1 half-moves
2 Kc5 loss in 2 half-moves
3 Kc7 loss in 2 half-moves
4 Kd5 loss in 2 half-moves
5 Kd6 loss in 2 half-moves
6 Kd7 loss in 2 half-moves
7 Ke7 loss in 2 half-moves
8 Ke8 loss in 2 half-moves
9 Kf7 loss in 2 half-moves
10 Kg7 loss in 2 half-moves
11 Kg8 loss in 2 half-moves
12 Ra8 loss in 2 half-moves
13 Rc7 loss in 2 half-moves
14 Rd8 loss in 2 half-moves
15 Re8 loss in 2 half-moves
16 Kb5 loss in 1 half-moves
17 Kb6 loss in 1 half-moves
18 Kb7 loss in 1 half-moves