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 Kb7 loss in 2 half-moves
3 Kb8 loss in 2 half-moves
4 Rb8 loss in 2 half-moves
5 Rc8 loss in 2 half-moves
6 Rd8 loss in 2 half-moves
7 Re8 loss in 2 half-moves
8 Rf8 loss in 2 half-moves
9 Rh8 loss in 2 half-moves
10 Ka6 loss in 1 half-moves
11 Kb6 loss in 1 half-moves