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

EGTB: win in 2 half-moves

# move score
1 Kb5 win in 1 half-moves
2 Ka3 draw
3 Ka5 draw
4 Kb4 draw
5 Ra5 draw
6 Ra6 draw
7 Ra7 draw
8 Rd8 draw
9 Rh8 loss in 6 half-moves
10 Kb3 loss in 2 half-moves
11 Rb8 loss in 2 half-moves
12 Rc8 loss in 2 half-moves
13 Re8 loss in 2 half-moves
14 Rf8 loss in 2 half-moves
15 Rg8 loss in 1 half-moves