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

EGTB: draw

# move score
1 Rb6 draw
2 Rc8 draw
3 Kc7 loss in 2 half-moves
4 Kc8 loss in 2 half-moves
5 Kd7 loss in 2 half-moves
6 Ke7 loss in 2 half-moves
7 Ke8 loss in 2 half-moves
8 Ra8 loss in 2 half-moves
9 Rb5 loss in 2 half-moves
10 Rb7 loss in 2 half-moves
11 Rb1 loss in 1 half-moves
12 Rb2 loss in 1 half-moves
13 Rb3 loss in 1 half-moves
14 Rb4 loss in 1 half-moves