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

EGTB: win in 2 half-moves

# move score
1 Rb7 win in 1 half-moves
2 Rc7 win in 1 half-moves
3 Rd7 win in 1 half-moves
4 Re7 win in 1 half-moves
5 Rf7 win in 1 half-moves
6 a2 loss in 2 half-moves
7 Ra4 loss in 1 half-moves
8 Ra5 loss in 1 half-moves
9 Ra6 loss in 1 half-moves
10 Ra8 loss in 1 half-moves
11 Rg7 loss in 1 half-moves
12 Rh7 loss in 1 half-moves