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 Kb6 win in 3 half-moves
3 Kb7 win in 3 half-moves
4 Kd5 win in 3 half-moves
5 Rb8 win in 3 half-moves
6 Kc5 win in 5 half-moves
7 Kd6 win in 5 half-moves
8 Ra8 win in 5 half-moves
9 Kcc7 draw
10 Kcd7 draw
11 Kdc7 loss in 2 half-moves
12 Kdd7 loss in 2 half-moves
13 Ke7 loss in 2 half-moves
14 Ke8 loss in 2 half-moves
15 Rc7 loss in 2 half-moves