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 Kc7 draw
3 Kc8 draw
4 Ke7 draw
5 Ke8 draw
6 Ra8 draw
7 Rc8 draw
8 Kc6 loss in 2 half-moves
9 Kd6 loss in 2 half-moves
10 Ke6 loss in 2 half-moves
11 Re8 loss in 2 half-moves
12 Rf8 loss in 2 half-moves
13 Rg8 loss in 2 half-moves
14 Rh8 loss in 2 half-moves