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

EGTB: win in 2 half-moves

# move score
1 Rb8 win in 1 half-moves
2 Rc1 win in 1 half-moves
3 Kc7 loss in 8 half-moves
4 Kd7 loss in 2 half-moves
5 Ke7 loss in 2 half-moves
6 Ke8 loss in 2 half-moves
7 Ra8 loss in 2 half-moves
8 Rc2 loss in 2 half-moves
9 Rc3 loss in 2 half-moves
10 Rc4 loss in 2 half-moves
11 Rc5 loss in 2 half-moves
12 Rc6 loss in 2 half-moves
13 Rc7 loss in 2 half-moves