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

EGTB: win in 4 half-moves

# move score
1 Ke7 win in 3 half-moves
2 Kdd7 draw
3 Ke8 draw
4 Ra8 draw
5 Kb6 loss in 2 half-moves
6 Kb7 loss in 2 half-moves
7 Kb8 loss in 2 half-moves
8 Kc6 loss in 2 half-moves
9 Kcd7 loss in 2 half-moves
10 Kd6 loss in 2 half-moves
11 Rb8 loss in 2 half-moves