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

EGTB: win in 4 half-moves

# move score
1 Kb6 win in 3 half-moves
2 Kc6 win in 3 half-moves
3 Kb7 draw
4 Kb8 draw
5 Kcc8 draw
6 Kcd7 draw
7 Kd6 draw
8 Kdc8 draw
9 Kdd7 draw
10 Ke7 draw
11 Ke8 draw
12 Ra4 draw
13 Ra5 draw
14 Ra6 draw
15 Ra8 draw
16 Ra1 loss in 2 half-moves
17 Ra2 loss in 2 half-moves
18 Ra3 loss in 2 half-moves
19 Rb7 loss in 2 half-moves