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 Kf1 draw
3 Kf2 draw
4 Kg3 draw
5 Kh3 draw
6 Ra3 draw
7 Rb3 draw
8 Rf1 draw
9 Rf5 draw
10 Rf6 draw
11 Rg3 draw
12 Rh3 draw
13 Kg1 loss in 16 half-moves
14 Kh2 loss in 6 half-moves
15 Kh1 loss in 4 half-moves
16 Rc3 loss in 2 half-moves
17 Rd3 loss in 2 half-moves
18 Re3 loss in 2 half-moves
19 Rf2 loss in 2 half-moves
20 Rf7 loss in 2 half-moves
21 Rf8 loss in 2 half-moves