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

EGTB: win in 2 half-moves

# move score
1 b6 win in 1 half-moves
2 Rf6 win in 1 half-moves
3 Rf8 win in 1 half-moves
4 Rb1 win in 3 half-moves
5 Rg1 loss in 4 half-moves
6 Rh1 loss in 4 half-moves
7 Ra1 loss in 2 half-moves
8 Rc1 loss in 2 half-moves
9 Rd1 loss in 2 half-moves
10 Re1 loss in 2 half-moves
11 Rf2 loss in 2 half-moves
12 Rf3 loss in 2 half-moves
13 Rf4 loss in 2 half-moves
14 Rf5 loss in 2 half-moves
15 Rf7 loss in 2 half-moves