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 Kb7 win in 3 half-moves
3 Kcd7 win in 3 half-moves
4 Kb8 draw
5 Kc6 draw
6 Kd6 draw
7 Ra8 draw
8 Rb8 draw
9 Kdd7 loss in 2 half-moves
10 Ke7 loss in 2 half-moves
11 Ke8 loss in 2 half-moves