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 Kc5 draw
5 Kc7 draw
6 Kd5 draw
7 Kd6 draw
8 Kd7 draw
9 Ra6 draw
10 Rb1 draw
11 Rb2 draw
12 Rb3 draw
13 Rb4 draw
14 Rb5 draw
15 Rb7 draw