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

EGTB: win in 2 half-moves

# move score
1 Rb5 win in 1 half-moves
2 Kb8 draw
3 Kc8 draw
4 Kd8 draw
5 Rb1 draw
6 Rb6 draw
7 Rb8 draw
8 Kd7 loss in 4 half-moves
9 Ra7 loss in 4 half-moves
10 Kb6 loss in 2 half-moves
11 Kc6 loss in 2 half-moves
12 Kd6 loss in 2 half-moves
13 Rb2 loss in 2 half-moves
14 Rb3 loss in 2 half-moves
15 Rb4 loss in 2 half-moves