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

EGTB: win in 2 half-moves

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