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

EGTB: win in 4 half-moves

# move score
1 Kb3 win in 3 half-moves
2 Kb4 win in 3 half-moves
3 Kb5 win in 3 half-moves
4 Rb5 win in 3 half-moves
5 Rd5 win in 3 half-moves
6 Kd5 win in 5 half-moves
7 Ka3 win in 13 half-moves
8 Kf4 draw
9 Rc5 draw
10 Kd4 loss in 2 half-moves
11 Kd6 loss in 2 half-moves
12 Ke4 loss in 2 half-moves
13 Ke6 loss in 2 half-moves
14 Kf5 loss in 2 half-moves
15 Kf6 loss in 2 half-moves
16 Ra6 loss in 2 half-moves
17 Ra7 loss in 2 half-moves
18 Ra8 loss in 2 half-moves