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

EGTB: win in 4 half-moves

# move score
1 Kb7 win in 3 half-moves
2 Ka7 win in 7 half-moves
3 Kb8 win in 9 half-moves
4 Kc5 draw
5 Kd3 draw
6 Kd5 draw
7 Ke3 draw
8 Ke4 draw
9 Ke5 draw
10 Rc6 draw
11 Rd5 draw
12 Rd7 draw
13 Rd8 draw
14 Re6 draw
15 Rf6 draw
16 Rg6 draw
17 Rh6 draw
18 Kc3 loss in 2 half-moves
19 Kc4 loss in 2 half-moves
20 Ra6 loss in 2 half-moves
21 Rb6 loss in 2 half-moves