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 Rb8 draw
5 Rc8 draw
6 Re8 draw
7 Ka5 loss in 14 half-moves
8 Ra7 loss in 14 half-moves
9 Ka7 loss in 10 half-moves
10 Rf8 loss in 10 half-moves
11 Rd8 loss in 2 half-moves
12 Rg8 loss in 2 half-moves
13 Rh8 loss in 2 half-moves