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 Ka7 draw
3 Ka8 draw
4 Kb7 draw
5 Kc7 draw
6 Kc8 draw
7 Ra7 draw
8 Re7 draw
9 Rf8 draw
10 Rh7 draw
11 Rf2 loss in 4 half-moves
12 Rf6 loss in 4 half-moves
13 Rb7 loss in 2 half-moves
14 Rc7 loss in 2 half-moves
15 Rd7 loss in 2 half-moves
16 Rf1 loss in 2 half-moves
17 Rf3 loss in 2 half-moves
18 Rf4 loss in 2 half-moves
19 Rf5 loss in 1 half-moves