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

EGTB: draw

# move score
1 Kb7 draw
2 Kb8 draw
3 Kc7 draw
4 Ra1 draw
5 Ra2 draw
6 Ra3 draw
7 Ra4 draw
8 Ra6 draw
9 Ra7 draw
10 Kd8 loss in 4 half-moves
11 Kd7 loss in 2 half-moves
12 Ra5 loss in 2 half-moves
13 Rb8 loss in 2 half-moves