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

EGTB: win in 4 half-moves

# move score
1 Kb2 win in 3 half-moves
2 Kc2 win in 3 half-moves
3 Rb8 win in 5 half-moves
4 Rc6 win in 5 half-moves
5 Kd5 win in 11 half-moves
6 Kd6 win in 11 half-moves
7 K3b4 draw
8 K3c4 draw
9 K3d4 draw
10 K5b4 draw
11 K5c4 draw
12 K5d4 draw
13 Kb3 draw
14 Kb5 draw
15 Kb6 draw
16 Kc6 draw
17 Kd3 draw
18 Ra8 draw
19 Rc7 draw
20 Rd8 draw
21 Re8 draw
22 Kd2 loss in 2 half-moves
23 Rf8 loss in 2 half-moves
24 Rg8 loss in 2 half-moves
25 Rh8 loss in 2 half-moves