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

EGTB: win in 2 half-moves

# move score
1 Rb5 win in 1 half-moves
2 Rc3 win in 1 half-moves
3 Rc7 win in 1 half-moves
4 Rc8 draw
5 Kc4 loss in 2 half-moves
6 Kc6 loss in 2 half-moves
7 Kd4 loss in 2 half-moves
8 Kd6 loss in 2 half-moves
9 Ke4 loss in 2 half-moves
10 Ke5 loss in 2 half-moves
11 Ke6 loss in 2 half-moves
12 Ra5 loss in 2 half-moves
13 Rc1 loss in 2 half-moves
14 Rc2 loss in 2 half-moves
15 Rc4 loss in 2 half-moves
16 Rc6 loss in 2 half-moves