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 Ka7 draw
3 Kb6 draw
4 Kb7 draw
5 Rb1 draw
6 Rb2 draw
7 Rb3 draw
8 Rb6 draw
9 Rb7 draw
10 Rc4 draw
11 Rd4 draw
12 Re4 draw
13 Rf4 draw
14 Rg4 draw
15 Rh4 draw
16 Ka5 loss in 2 half-moves
17 Kb5 loss in 2 half-moves
18 Ra4 loss in 2 half-moves
19 Rb5 loss in 2 half-moves