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 Rb1 loss in 2 half-moves
3 Rc1 loss in 2 half-moves
4 Rd1 loss in 2 half-moves
5 Re1 loss in 2 half-moves
6 Rf2 loss in 2 half-moves
7 Rf3 loss in 2 half-moves
8 Rf5 loss in 2 half-moves
9 Rf6 loss in 2 half-moves
10 Rg1 loss in 2 half-moves
11 Rh1 loss in 2 half-moves
12 Ke6 loss in 1 half-moves
13 Ke7 loss in 1 half-moves
14 Ke8 loss in 1 half-moves
15 Kf6 loss in 1 half-moves
16 Kf8 loss in 1 half-moves
17 Kg6 loss in 1 half-moves
18 Kg7 loss in 1 half-moves
19 Kg8 loss in 1 half-moves
20 Ra1 loss in 1 half-moves