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

EGTB: win in 2 half-moves

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