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

EGTB: win in 2 half-moves

# move score
1 Rb8 win in 1 half-moves
2 Ka3 draw
3 Ka4 draw
4 Ka5 draw
5 Kb3 draw
6 Kc3 draw
7 Kc4 draw
8 Kc5 draw
9 Ra7 draw
10 Rc7 draw
11 Kb5 loss in 8 half-moves
12 Rb6 loss in 8 half-moves
13 Rd7 loss in 4 half-moves
14 Re7 loss in 4 half-moves
15 Rb5 loss in 2 half-moves
16 Rg7 loss in 2 half-moves
17 Rh7 loss in 2 half-moves
18 Rf7 loss in 1 half-moves