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

EGTB: win in 2 half-moves

# move score
1 Rb1 win in 1 half-moves
2 Rb2 win in 1 half-moves
3 Rb4 win in 1 half-moves
4 Rb6 win in 1 half-moves
5 Rb8 win in 1 half-moves
6 Kc6 loss in 2 half-moves
7 Kc7 loss in 2 half-moves
8 Kc8 loss in 2 half-moves
9 Ke6 loss in 2 half-moves
10 Ke7 loss in 2 half-moves
11 Ke8 loss in 2 half-moves
12 Kd6 loss in 1 half-moves
13 Kd8 loss in 1 half-moves
14 Ra7 loss in 1 half-moves
15 Rb3 loss in 1 half-moves
16 Rb5 loss in 1 half-moves
17 Rc7 loss in 1 half-moves