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

EGTB: win in 6 half-moves

# move score
1 Rb8 win in 5 half-moves
2 Kf7 draw
3 Kg7 draw
4 Kh7 draw
5 Kh8 draw
6 Ra8 draw
7 Rf2 draw
8 Rf4 draw
9 Rf5 draw
10 Rf6 draw
11 Rf7 draw
12 Rc8 loss in 2 half-moves
13 Rd8 loss in 2 half-moves
14 Re8 loss in 2 half-moves
15 Rf1 loss in 2 half-moves
16 Rf3 loss in 2 half-moves