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

EGTB: win in 4 half-moves

# move score
1 Kb5 win in 3 half-moves
2 Kb7 win in 5 half-moves
3 Ka5 draw
4 Ka7 draw
5 Kb6 draw
6 Kc2 draw
7 Kc3 draw
8 Kc4 draw
9 Kd2 draw
10 Kd4 draw
11 Ke3 draw
12 Ke4 draw
13 Ra7 draw
14 Rb8 draw
15 Rc8 draw
16 Rd8 draw
17 Re8 draw
18 Rf8 draw
19 Ke2 loss in 2 half-moves
20 Rg8 loss in 2 half-moves
21 Rh8 loss in 2 half-moves