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

EGTB: win in 4 half-moves

# move score
1 Kb8 win in 3 half-moves
2 Kcd8 win in 5 half-moves
3 Kcc6 draw
4 Kcc8 draw
5 Kdc6 draw
6 Kdc8 draw
7 Kdd6 draw
8 Kdd8 draw
9 Ra7 draw
10 Rb1 draw
11 Rb5 draw
12 Rb6 draw
13 Rb8 draw
14 Kb6 loss in 2 half-moves
15 Kcd6 loss in 2 half-moves
16 Ke6 loss in 1 half-moves
17 Ke7 loss in 1 half-moves
18 Ke8 loss in 1 half-moves
19 Rb2 loss in 1 half-moves
20 Rb3 loss in 1 half-moves
21 Rb4 loss in 1 half-moves