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

EGTB: win in 4 half-moves

# move score
1 Rb4 win in 3 half-moves
2 Rf4 win in 3 half-moves
3 Rh1 win in 3 half-moves
4 Rh2 win in 3 half-moves
5 Rh7 win in 3 half-moves
6 Ra4 win in 5 half-moves
7 Rc4 win in 5 half-moves
8 Rd4 win in 5 half-moves
9 Re4 win in 5 half-moves
10 Rg4 win in 5 half-moves
11 Rh3 win in 5 half-moves
12 Rh5 win in 5 half-moves
13 Rh6 win in 5 half-moves
14 Rh8 win in 5 half-moves