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

EGTB: win in 4 half-moves

# move score
1 Kab5 win in 3 half-moves
2 Kb7 win in 3 half-moves
3 Kbb5 win in 3 half-moves
4 Kb4 win in 5 half-moves
5 Ka4 draw
6 Ka7 draw
7 Kc5 draw
8 Kc6 loss in 2 half-moves
9 Kc7 loss in 2 half-moves
10 Ra7 loss in 2 half-moves
11 Ra8 loss in 2 half-moves