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

EGTB: win in 4 half-moves

# move score
1 Rb8 win in 3 half-moves
2 Kb5 draw
3 Kf7 draw
4 Kf8 draw
5 Kg7 draw
6 Kh7 draw
7 Kh8 draw
8 Rb5 draw
9 Rb7 draw
10 Re6 draw
11 Ka3 loss in 2 half-moves
12 Ka4 loss in 2 half-moves
13 Ka5 loss in 2 half-moves
14 Kb3 loss in 2 half-moves
15 Kc3 loss in 2 half-moves
16 Kc4 loss in 2 half-moves
17 Kc5 loss in 2 half-moves
18 Ra6 loss in 2 half-moves
19 Rc6 loss in 2 half-moves
20 Rd6 loss in 2 half-moves
21 Rf6 loss in 2 half-moves
22 Rg6 loss in 2 half-moves
23 Rh6 loss in 2 half-moves