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 Kd7 draw
5 Kd8 draw
6 Re1 draw
7 Re2 draw
8 Re4 draw
9 Re5 draw
10 Re6 draw
11 Re7 draw
12 Rf8 draw
13 Rg8 draw
14 Rh8 draw
15 Rd8 loss in 2 half-moves
16 Re3 loss in 2 half-moves