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