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 Ra2 draw
3 Ra3 draw
4 Ra4 draw
5 Kc7 loss in 2 half-moves
6 Kc8 loss in 2 half-moves
7 Kdd7 loss in 2 half-moves
8 Kde7 loss in 2 half-moves
9 Ked7 loss in 2 half-moves
10 Kee7 loss in 2 half-moves
11 Kf7 loss in 2 half-moves
12 Kf8 loss in 2 half-moves
13 Ra1 loss in 2 half-moves
14 Ra5 loss in 2 half-moves
15 Ra6 loss in 2 half-moves
16 Ra8 loss in 2 half-moves
17 Rb7 loss in 2 half-moves
18 Rc7 loss in 2 half-moves
19 Rd7 loss in 2 half-moves
20 Re7 loss in 2 half-moves
21 Rf7 loss in 2 half-moves
22 Rh7 loss in 2 half-moves