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

EGTB: draw

# move score
1 Kb5 draw
2 Kb6 draw
3 Kb7 draw
4 Kc5 draw
5 Kd5 draw
6 Kd6 draw
7 Kd7 draw
8 Ra7 draw
9 Rb7 draw
10 Rc8 draw
11 Rd7 draw
12 Rh7 draw
13 Re7 loss in 2 half-moves
14 Rf7 loss in 2 half-moves
15 Rg7 loss in 2 half-moves