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

EGTB: win in 4 half-moves

# move score
1 Rb6 win in 3 half-moves
2 Kb7 draw
3 Kb8 draw
4 Kc7 draw
5 Kcd7 draw
6 Kcd8 draw
7 Ke6 draw
8 Ked7 draw
9 Ked8 draw
10 Kf6 draw
11 Ra6 draw
12 Rc6 draw
13 Rd6 draw
14 Rg3 draw
15 Rg7 draw
16 Rg8 draw
17 Rh6 draw
18 Ke8 loss in 2 half-moves
19 Kf7 loss in 2 half-moves
20 Kf8 loss in 2 half-moves
21 Re6 loss in 2 half-moves
22 Rf6 loss in 2 half-moves
23 Rg1 loss in 2 half-moves
24 Rg2 loss in 2 half-moves
25 Rg4 loss in 2 half-moves
26 Rg5 loss in 2 half-moves
27 Kd6 loss in 1 half-moves