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

EGTB: draw

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