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

EGTB: win in 4 half-moves

# move score
1 Kb7 win in 3 half-moves
2 Rc8 win in 3 half-moves
3 Ka5 draw
4 Ka7 draw
5 Kb5 draw
6 Kb6 draw
7 Kc8 draw
8 Ke8 draw
9 Ra7 draw
10 Rb8 draw
11 Kc7 loss in 2 half-moves
12 Kd7 loss in 2 half-moves
13 Ke7 loss in 2 half-moves