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

EGTB: win in 8 half-moves

# move score
1 Ra6 win in 7 half-moves
2 Kd6 win in 11 half-moves
3 Kb5 loss in 2 half-moves
4 Kb7 loss in 2 half-moves
5 Kc5 loss in 2 half-moves
6 Kc7 loss in 2 half-moves
7 Rb1 loss in 2 half-moves
8 Rb2 loss in 2 half-moves
9 Rb3 loss in 2 half-moves
10 Rb4 loss in 2 half-moves
11 Rb5 loss in 2 half-moves
12 Rb7 loss in 2 half-moves
13 Rb8 loss in 2 half-moves
14 Kd5 loss in 1 half-moves
15 Kd7 loss in 1 half-moves