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 Ka4 draw
3 Ka5 draw
4 Kb5 draw
5 Kc4 draw
6 Kc5 draw
7 Ra6 draw
8 Rb7 draw
9 Rd6 draw
10 Re6 draw
11 Rf6 draw
12 Rg6 draw
13 Rh6 draw
14 Ka3 loss in 2 half-moves
15 Kb3 loss in 2 half-moves
16 Kc3 loss in 2 half-moves
17 Rb5 loss in 2 half-moves
18 Rc6 loss in 2 half-moves