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

EGTB: win in 6 half-moves

# move score
1 Rf4 win in 5 half-moves
2 f7 draw
3 Ra4 draw
4 Rb4 draw
5 Rg5 draw
6 Rg6 draw
7 Rg7 draw
8 Rg8 draw
9 Rh4 draw
10 Rc4 loss in 2 half-moves
11 Rd4 loss in 2 half-moves
12 Re4 loss in 2 half-moves
13 Rg1 loss in 2 half-moves
14 Rg2 loss in 2 half-moves
15 Rg3 loss in 2 half-moves