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

EGTB: win in 4 half-moves

# move score
1 Kab3 win in 3 half-moves
2 Kb5 win in 3 half-moves
3 Ka5 win in 5 half-moves
4 Kb4 win in 5 half-moves
5 Ra1 win in 5 half-moves
6 Kc2 win in 7 half-moves
7 Kc1 win in 13 half-moves
8 Kc3 win in 13 half-moves
9 Ka1 draw
10 Kaa3 draw
11 Kb1 draw
12 Kba3 draw
13 Kbb3 draw
14 Ra3 loss in 2 half-moves