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

EGTB: win in 2 half-moves

# move score
1 Kb6 win in 1 half-moves
2 Kb7 win in 1 half-moves
3 Ra8 win in 1 half-moves
4 Kc5 loss in 2 half-moves
5 Kc8 loss in 2 half-moves
6 Kcc6 loss in 2 half-moves
7 Kcd7 loss in 2 half-moves
8 Kd5 loss in 2 half-moves
9 Kdc6 loss in 2 half-moves
10 Kdd7 loss in 2 half-moves
11 Ke5 loss in 2 half-moves
12 Ke6 loss in 2 half-moves
13 Ke7 loss in 2 half-moves
14 Rc8 loss in 2 half-moves
15 Rd7 loss in 2 half-moves
16 Re8 loss in 2 half-moves
17 Rf8 loss in 2 half-moves
18 Rg8 loss in 2 half-moves
19 Rh8 loss in 2 half-moves
20 Kb8 loss in 1 half-moves
21 Rb8 loss in 1 half-moves