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

EGTB: win in 2 half-moves

# move score
1 Rc7 win in 1 half-moves
2 Kg7 loss in 10 half-moves
3 Kh6 loss in 10 half-moves
4 Rb7 loss in 10 half-moves
5 Ra6 loss in 8 half-moves
6 Ra8 loss in 8 half-moves
7 Kg8 loss in 6 half-moves
8 Kh8 loss in 6 half-moves
9 Kg6 loss in 2 half-moves
10 Ra2 loss in 2 half-moves
11 Ra3 loss in 2 half-moves
12 Ra4 loss in 2 half-moves
13 Ra5 loss in 2 half-moves
14 Rd7 loss in 2 half-moves
15 Re7 loss in 2 half-moves
16 Rf7 loss in 2 half-moves
17 Rg7 loss in 2 half-moves
18 Ra1 loss in 1 half-moves