Click on the third or sixth rank to set the en passant target square.

EGTB: win in 2 half-moves

# move score
1 Kb7 win in 1 half-moves
2 Ra7 draw
3 Re8 draw
4 Ka5 loss in 2 half-moves
5 Kb5 loss in 2 half-moves
6 Kb6 loss in 2 half-moves
7 Rb8 loss in 2 half-moves
8 Rc8 loss in 2 half-moves
9 Rd8 loss in 2 half-moves
10 Rf8 loss in 2 half-moves
11 Rg8 loss in 2 half-moves
12 Rh8 loss in 2 half-moves
13 Ka7 loss in 1 half-moves