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