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

EGTB: draw

# move score
1 Rb5 draw
2 Rb6 draw
3 Rb7 draw
4 Kc1 loss in 2 half-moves
5 Kc2 loss in 2 half-moves
6 Kd2 loss in 2 half-moves
7 Ke1 loss in 2 half-moves
8 Ke2 loss in 2 half-moves
9 Kg1 loss in 2 half-moves
10 Kg2 loss in 2 half-moves
11 Kh2 loss in 2 half-moves
12 Ra1 loss in 2 half-moves
13 Rb2 loss in 2 half-moves
14 Rb3 loss in 2 half-moves
15 Rb4 loss in 2 half-moves
16 Rb8 loss in 2 half-moves
17 Rc1 loss in 2 half-moves