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

EGTB: win in 4 half-moves

# move score
1 Ka4 win in 3 half-moves
2 Ka5 win in 3 half-moves
3 Kb2 win in 3 half-moves
4 Kb4 win in 3 half-moves
5 Kc2 win in 3 half-moves
6 Kc4 win in 3 half-moves
7 Rb6 win in 3 half-moves
8 Rc8 win in 3 half-moves
9 Ka6 draw
10 Kb1 draw
11 Kb6 draw
12 Kc5 draw
13 Kc6 draw
14 Ra8 draw
15 Rb7 draw
16 Rd8 draw
17 Re8 draw
18 Kd1 loss in 2 half-moves
19 Kd2 loss in 2 half-moves
20 Rf8 loss in 2 half-moves
21 Rg8 loss in 2 half-moves
22 Rh8 loss in 2 half-moves