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

EGTB: win in 2 half-moves

# move score
1 Rb3 win in 1 half-moves
2 Rf1 win in 1 half-moves
3 Ra1 loss in 2 half-moves
4 Rb4 loss in 2 half-moves
5 Rc1 loss in 2 half-moves
6 Rd1 loss in 2 half-moves
7 Re1 loss in 2 half-moves
8 Rg1 loss in 2 half-moves
9 Rh1 loss in 2 half-moves
10 b6 loss in 1 half-moves
11 Rb2 loss in 1 half-moves