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

EGTB: win in 2 half-moves

# move score
1 Rd8 win in 1 half-moves
2 Ka6 draw
3 Ka7 draw
4 Ka8 draw
5 Ra8 draw
6 Rc8 draw
7 Rh8 draw
8 Kb6 loss in 4 half-moves
9 Kc6 loss in 2 half-moves
10 Kc7 loss in 2 half-moves
11 Kc8 loss in 2 half-moves
12 Re8 loss in 2 half-moves
13 Rf8 loss in 2 half-moves
14 Rg8 loss in 2 half-moves