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

EGTB: win in 2 half-moves

# move score
1 Rf4 win in 1 half-moves
2 Ke1 draw
3 Ke2 draw
4 Kf1 draw
5 Kg1 draw
6 Kg2 draw
7 Rf3 draw
8 Rf5 draw
9 Rh8 draw
10 Ra8 loss in 4 half-moves
11 Ke3 loss in 2 half-moves
12 Kf3 loss in 2 half-moves
13 Kg3 loss in 2 half-moves
14 Rc8 loss in 2 half-moves
15 Rd8 loss in 2 half-moves
16 Re8 loss in 2 half-moves
17 Rf6 loss in 2 half-moves
18 Rf7 loss in 2 half-moves
19 Rb8 loss in 1 half-moves
20 Rg8 loss in 1 half-moves