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

EGTB: win in 2 half-moves

# move score
1 Rf3 win in 1 half-moves
2 Rb6 loss in 4 half-moves
3 Kd7 loss in 2 half-moves
4 Kd8 loss in 2 half-moves
5 Ke7 loss in 2 half-moves
6 Kf7 loss in 2 half-moves
7 Kf8 loss in 2 half-moves
8 Rc6 loss in 2 half-moves
9 Rd6 loss in 2 half-moves
10 Re6 loss in 2 half-moves
11 Rf4 loss in 2 half-moves
12 Rf5 loss in 2 half-moves
13 Rf7 loss in 2 half-moves
14 Rf8 loss in 2 half-moves
15 Rg6 loss in 2 half-moves
16 Rh6 loss in 2 half-moves
17 Ra6 loss in 1 half-moves
18 Rf1 loss in 1 half-moves
19 Rf2 loss in 1 half-moves