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

EGTB: draw

# move score
1 Kb8 draw
2 Rb7 draw
3 Rc1 draw
4 Rc2 draw
5 Rc3 draw
6 Rc4 draw
7 Rc6 draw
8 Re7 draw
9 Rf7 draw
10 Rg7 draw
11 Rh7 draw
12 Ka7 loss in 2 half-moves
13 Kb7 loss in 2 half-moves
14 Ra7 loss in 2 half-moves
15 Rc5 loss in 2 half-moves
16 Rc8 loss in 2 half-moves
17 Rd7 loss in 1 half-moves