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 Kc6 draw
3 Kc7 draw
4 Kc8 draw
5 Kd6 draw
6 Kd8 draw
7 Ra8 draw
8 Rc8 draw
9 Rd8 draw
10 Rf1 draw
11 Rf2 draw
12 Rf3 draw
13 Rf4 draw
14 Rf5 draw
15 Rf6 draw
16 Rg8 draw
17 Rh8 draw
18 Ke6 loss in 2 half-moves
19 Ke7 loss in 2 half-moves
20 Ke8 loss in 2 half-moves
21 Re8 loss in 2 half-moves
22 Rf7 loss in 2 half-moves