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 Ra7 draw
3 Rd7 draw
4 Re7 draw
5 Rf7 draw
6 Kb5 loss in 2 half-moves
7 Kc5 loss in 2 half-moves
8 Kc6 loss in 2 half-moves
9 Kc7 loss in 2 half-moves
10 Rc7 loss in 2 half-moves
11 Rg7 loss in 2 half-moves
12 Rh7 loss in 2 half-moves
13 Ka5 loss in 1 half-moves
14 Ka6 loss in 1 half-moves
15 Ka7 loss in 1 half-moves