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 Ka5 loss in 2 half-moves
3 Ra5 loss in 2 half-moves
4 Ra6 loss in 2 half-moves
5 Ra7 loss in 2 half-moves
6 Rc8 loss in 2 half-moves
7 Rd8 loss in 2 half-moves
8 Re8 loss in 2 half-moves
9 Rf8 loss in 2 half-moves
10 Rg8 loss in 2 half-moves
11 Rh8 loss in 2 half-moves
12 Ka3 loss in 1 half-moves
13 Kb3 loss in 1 half-moves
14 Kb4 loss in 1 half-moves
15 Kb5 loss in 1 half-moves