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

EGTB: draw

# move score
1 Kb7 draw
2 Kd7 draw
3 Kg1 draw
4 Kg2 draw
5 Kh2 draw
6 Ra8 draw
7 Rb8 draw
8 Rc7 draw
9 Rd8 draw
10 Kb5 loss in 2 half-moves
11 Kb6 loss in 2 half-moves
12 Kc5 loss in 2 half-moves
13 Kd5 loss in 2 half-moves
14 Kd6 loss in 2 half-moves
15 Re8 loss in 2 half-moves
16 Rf8 loss in 2 half-moves
17 Rg8 loss in 2 half-moves
18 Rh8 loss in 2 half-moves
19 Kc7 loss in 1 half-moves