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

EGTB: win in 4 half-moves

# move score
1 Kb6 win in 3 half-moves
2 Kcb5 win in 3 half-moves
3 Kd5 win in 3 half-moves
4 Kd6 win in 3 half-moves
5 Rb8 win in 3 half-moves
6 Rd8 win in 3 half-moves
7 Kb7 win in 5 half-moves
8 Kc7 win in 7 half-moves
9 Ka3 draw
10 Ka5 draw
11 Kab5 draw
12 Kb3 draw
13 Kb4 draw
14 Kc5 draw
15 Kd7 draw
16 Ra8 draw
17 Rc7 draw
18 Re8 draw
19 Rf8 loss in 2 half-moves
20 Rg8 loss in 2 half-moves
21 Rh8 loss in 2 half-moves