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

EGTB: win in 4 half-moves

# move score
1 Rc8 win in 3 half-moves
2 Re1 win in 3 half-moves
3 Re2 win in 3 half-moves
4 Re6 win in 3 half-moves
5 Rg8 win in 3 half-moves
6 Rh8 win in 3 half-moves
7 Ra8 win in 5 half-moves
8 Rb8 win in 5 half-moves
9 Rd8 win in 5 half-moves
10 Re3 win in 5 half-moves
11 Re4 win in 5 half-moves
12 Re5 win in 5 half-moves
13 Re7 win in 5 half-moves
14 Rf8 win in 5 half-moves