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

EGTB: win in 2 half-moves

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