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

EGTB: draw

# move score
1 Kb3 draw
2 Kb4 draw
3 Kb5 draw
4 Kc5 draw
5 Kd5 draw
6 Ra1 draw
7 Ra2 draw
8 Ra3 draw
9 Ra8 draw
10 Kc3 loss in 4 half-moves
11 Kd3 loss in 4 half-moves
12 Kd4 loss in 4 half-moves
13 Ra5 loss in 2 half-moves
14 Ra6 loss in 2 half-moves
15 Ra7 loss in 2 half-moves
16 Rb4 loss in 2 half-moves