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 Kd5 draw
3 Kd7 draw
4 Ke6 draw
5 Ke7 draw
6 Ra8 draw
7 Re8 draw
8 Rh8 draw
9 Kc5 loss in 2 half-moves
10 Kc6 loss in 2 half-moves
11 Kc7 loss in 2 half-moves
12 Ke5 loss in 2 half-moves
13 Rc8 loss in 2 half-moves
14 Rd7 loss in 2 half-moves
15 Rf8 loss in 2 half-moves
16 Rg8 loss in 2 half-moves