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

EGTB: win in 4 half-moves

# move score
1 Rh7 win in 3 half-moves
2 Kf8 draw
3 Kgh7 draw
4 Khh7 draw
5 Ra3 draw
6 Ra8 draw
7 Rb7 draw
8 Rc7 draw
9 Rg7 draw
10 Kf7 loss in 2 half-moves
11 Kgg7 loss in 2 half-moves
12 Khg7 loss in 2 half-moves
13 Ra1 loss in 2 half-moves
14 Ra2 loss in 2 half-moves
15 Ra4 loss in 2 half-moves
16 Ra5 loss in 2 half-moves
17 Ra6 loss in 2 half-moves
18 Rd7 loss in 2 half-moves
19 Re7 loss in 2 half-moves
20 Rf7 loss in 2 half-moves