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

EGTB: win in 2 half-moves

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