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 Kc5 win in 3 half-moves
3 Kc7 win in 3 half-moves
4 Kd5 win in 3 half-moves
5 Rc5 win in 3 half-moves
6 Kb4 draw
7 Kb7 draw
8 Kb8 draw
9 Kc3 draw
10 Kd3 draw
11 Kd4 draw
12 Ra6 draw
13 Rb6 draw
14 Rh6 draw
15 Kb3 loss in 2 half-moves
16 Kd7 loss in 2 half-moves
17 Kd8 loss in 2 half-moves
18 Rc7 loss in 2 half-moves
19 Rd6 loss in 2 half-moves
20 Re6 loss in 2 half-moves
21 Rf6 loss in 2 half-moves
22 Rg6 loss in 2 half-moves