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

EGTB: win in 2 half-moves

# move score
1 Rb5 win in 1 half-moves
2 Ra6 loss in 2 half-moves
3 Rb7 loss in 2 half-moves
4 Rb8 loss in 2 half-moves
5 Rc6 loss in 2 half-moves
6 Rd6 loss in 2 half-moves
7 Re6 loss in 2 half-moves
8 Rf6 loss in 2 half-moves
9 Rg6 loss in 2 half-moves
10 Rh6 loss in 2 half-moves
11 b5 loss in 1 half-moves