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

EGTB: win in 4 half-moves

# move score
1 Kb4 win in 3 half-moves
2 Kb5 win in 3 half-moves
3 Kb6 win in 3 half-moves
4 Rb8 win in 3 half-moves
5 Rc8 win in 3 half-moves
6 Kc6 win in 15 half-moves
7 Kd6 win in 17 half-moves
8 Ka4 draw
9 Ka6 draw
10 Kc4 draw
11 Kc5 draw
12 Kd4 draw
13 Ra6 draw
14 Ra7 draw
15 Rd8 draw
16 Re8 draw
17 Rf8 draw
18 Ke4 loss in 2 half-moves
19 Ke5 loss in 2 half-moves
20 Ke6 loss in 2 half-moves
21 Rg8 loss in 2 half-moves
22 Rh8 loss in 2 half-moves