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

EGTB: win in 2 half-moves

# move score
1 Rg7 win in 1 half-moves
2 Kb6 draw
3 Rb7 draw
4 Kb5 loss in 6 half-moves
5 Kb7 loss in 6 half-moves
6 Ka5 loss in 4 half-moves
7 Ra8 loss in 4 half-moves
8 Rc7 loss in 4 half-moves
9 Rd7 loss in 2 half-moves
10 Re7 loss in 2 half-moves
11 Rf7 loss in 2 half-moves
12 Rh7 loss in 2 half-moves