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

EGTB: win in 4 half-moves

# move score
1 Kb7 win in 3 half-moves
2 Ka5 draw
3 Ka7 draw
4 Kc7 draw
5 Kc8 draw
6 Kd8 draw
7 Ke8 draw
8 Ra7 draw
9 Rb8 draw
10 Rd8 draw
11 Rf8 draw
12 Rg8 draw
13 Rh8 draw
14 Kb5 loss in 2 half-moves
15 Kb6 loss in 2 half-moves
16 Kc6 loss in 2 half-moves
17 Kd6 loss in 2 half-moves
18 Ke6 loss in 2 half-moves
19 Ke7 loss in 2 half-moves
20 Rc8 loss in 2 half-moves
21 Re8 loss in 2 half-moves