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

EGTB: win in 4 half-moves

# move score
1 Rg1 win in 3 half-moves
2 Rb4 loss in 10 half-moves
3 Rb2 loss in 4 half-moves
4 Rb3 loss in 4 half-moves
5 Ra1 loss in 2 half-moves
6 Rc1 loss in 2 half-moves
7 Rd1 loss in 2 half-moves
8 Re1 loss in 2 half-moves
9 Rf1 loss in 2 half-moves
10 Rh1 loss in 2 half-moves