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 Kd7 draw
3 Kd8 draw
4 Kf8 draw
5 Ra1 draw
6 Ra2 draw
7 Ra3 draw
8 Ra7 draw
9 Rc8 draw
10 Rd8 draw
11 Ke7 loss in 2 half-moves
12 Kf7 loss in 2 half-moves
13 Ra4 loss in 2 half-moves
14 Ra5 loss in 2 half-moves
15 Ra6 loss in 2 half-moves