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 Rb1 loss in 4 half-moves
3 Ra1 loss in 2 half-moves
4 Rc2 loss in 2 half-moves
5 Rc3 loss in 2 half-moves
6 Rc4 loss in 2 half-moves
7 Rc5 loss in 2 half-moves
8 Rc6 loss in 2 half-moves
9 Rc8 loss in 2 half-moves
10 Rd1 loss in 2 half-moves
11 Re1 loss in 2 half-moves
12 Rf1 loss in 2 half-moves
13 Rg1 loss in 2 half-moves
14 Rh1 loss in 2 half-moves
15 Rc7 loss in 1 half-moves