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

EGTB: draw

# move score
1 Kb8 draw
2 Kc8 draw
3 Kd7 draw
4 Kd8 draw
5 Ra7 draw
6 Rb1 draw
7 Rb2 draw
8 Rb3 draw
9 Rb8 draw
10 Kb6 loss in 2 half-moves
11 Kc6 loss in 2 half-moves
12 Kd6 loss in 2 half-moves
13 Rb4 loss in 2 half-moves
14 Rb5 loss in 2 half-moves
15 Rb6 loss in 2 half-moves