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

EGTB: win in 2 half-moves

# move score
1 Rg8 win in 1 half-moves
2 Ka7 draw
3 Kb7 draw
4 Kb8 draw
5 Rd8 draw
6 Re8 draw
7 Rf1 draw
8 Rf5 draw
9 Rf6 draw
10 Rf7 draw
11 Rh8 draw
12 Rb8 loss in 2 half-moves
13 Rc8 loss in 2 half-moves
14 Rf2 loss in 2 half-moves
15 Rf3 loss in 2 half-moves
16 Rf4 loss in 2 half-moves