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

EGTB: win in 4 half-moves

# move score
1 Rc7 win in 3 half-moves
2 Kc6 loss in 6 half-moves
3 Rb7 loss in 6 half-moves
4 Rd7 loss in 6 half-moves
5 Kc7 loss in 4 half-moves
6 Kd7 loss in 4 half-moves
7 Ke7 loss in 4 half-moves
8 Ra6 loss in 4 half-moves
9 Ra8 loss in 4 half-moves
10 Kc5 loss in 2 half-moves
11 Kd5 loss in 2 half-moves
12 Ke5 loss in 2 half-moves
13 Ke6 loss in 2 half-moves
14 Ra2 loss in 2 half-moves
15 Ra3 loss in 2 half-moves
16 Ra4 loss in 2 half-moves
17 Ra5 loss in 2 half-moves
18 Re7 loss in 2 half-moves
19 Rf7 loss in 2 half-moves
20 Rg7 loss in 2 half-moves
21 Rh7 loss in 2 half-moves
22 Ra1 loss in 1 half-moves