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

EGTB: win in 4 half-moves

# move score
1 Rf8 win in 3 half-moves
2 Kgg7 draw
3 Kgh7 draw
4 Khg7 draw
5 Khh7 draw
6 Ra4 draw
7 Rf1 draw
8 Rf2 draw
9 Rf3 draw
10 Rg4 draw
11 Rh4 draw
12 Kf7 loss in 2 half-moves
13 Kf8 loss in 2 half-moves
14 Rb4 loss in 2 half-moves
15 Rc4 loss in 2 half-moves
16 Rd4 loss in 2 half-moves
17 Re4 loss in 2 half-moves
18 Rf5 loss in 2 half-moves
19 Rf6 loss in 2 half-moves
20 Rf7 loss in 2 half-moves