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 Rb7 draw
5 Ka5 loss in 4 half-moves
6 Ra8 loss in 4 half-moves
7 Rc7 loss in 4 half-moves
8 Rd7 loss in 2 half-moves
9 Re7 loss in 2 half-moves
10 Rf7 loss in 2 half-moves
11 Rg7 loss in 2 half-moves
12 Rh7 loss in 2 half-moves