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

EGTB: win in 4 half-moves

# move score
1 Kbb4 win in 3 half-moves
2 Ka2 draw
3 Kb2 draw
4 Kc2 draw
5 Kc3 draw
6 Kc4 draw
7 Ra1 draw
8 Ra2 draw
9 Ka5 loss in 2 half-moves
10 Kab4 loss in 2 half-moves
11 Kb5 loss in 2 half-moves