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 Rb1 draw
3 Rb4 draw
4 Rb5 draw
5 Rb6 draw
6 Kc6 loss in 2 half-moves
7 Kc7 loss in 2 half-moves
8 Kc8 loss in 2 half-moves
9 Kd6 loss in 2 half-moves
10 Kd8 loss in 2 half-moves
11 Kde7 loss in 2 half-moves
12 Kde8 loss in 2 half-moves
13 Ke6 loss in 2 half-moves
14 Kf7 loss in 2 half-moves
15 Kfe7 loss in 2 half-moves
16 Kfe8 loss in 2 half-moves
17 Kg7 loss in 2 half-moves
18 Kg8 loss in 2 half-moves
19 Ra7 loss in 2 half-moves
20 Rb2 loss in 2 half-moves
21 Rb3 loss in 2 half-moves
22 Rb8 loss in 2 half-moves