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 Kd6 draw
3 Kd7 draw
4 Kf7 draw
5 Kf8 draw
6 Rf8 draw
7 Rg8 draw
8 Rh8 draw
9 Kd8 loss in 4 half-moves
10 Ke6 loss in 4 half-moves
11 Kf6 loss in 4 half-moves
12 Ra8 loss in 2 half-moves
13 Rc8 loss in 2 half-moves
14 Rd8 loss in 2 half-moves