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

EGTB: win in 8 half-moves

# move score
1 Ka6 win in 7 half-moves
2 Ka4 draw
3 Ka5 draw
4 Kb4 draw
5 Kb6 draw
6 Kd8 draw
7 Ra8 draw
8 Kb7 loss in 2 half-moves
9 Kc4 loss in 2 half-moves
10 Kc5 loss in 2 half-moves
11 Kc6 loss in 2 half-moves
12 Kc7 loss in 2 half-moves
13 Kd7 loss in 2 half-moves
14 Rb6 loss in 2 half-moves
15 Rb7 loss in 2 half-moves