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

EGTB: win in 4 half-moves

# move score
1 Rf3 win in 3 half-moves
2 Rf1 draw
3 Rf2 draw
4 g5 loss in 2 half-moves
5 Ra8 loss in 2 half-moves
6 Rc8 loss in 2 half-moves
7 Rd8 loss in 2 half-moves
8 Re8 loss in 2 half-moves
9 Rf4 loss in 2 half-moves
10 Rf5 loss in 2 half-moves
11 Rf6 loss in 2 half-moves
12 Rf7 loss in 2 half-moves
13 Rg8 loss in 2 half-moves
14 Rh8 loss in 2 half-moves
15 Rb8 loss in 1 half-moves