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

EGTB: win in 2 half-moves

# move score
1 Rb8 win in 1 half-moves
2 Ra7 draw
3 Rb4 draw
4 Re7 draw
5 Ra1 loss in 2 half-moves
6 Rb2 loss in 2 half-moves
7 Rb3 loss in 2 half-moves
8 Rb5 loss in 2 half-moves
9 Rb6 loss in 2 half-moves
10 Rbb1 loss in 2 half-moves
11 Rc1 loss in 2 half-moves
12 Rc7 loss in 2 half-moves
13 Rd1 loss in 2 half-moves
14 Rd7 loss in 2 half-moves
15 Re1 loss in 2 half-moves
16 Rf1 loss in 2 half-moves
17 Rf7 loss in 2 half-moves
18 Rg7 loss in 2 half-moves
19 Rgb1 loss in 2 half-moves
20 Rh1 loss in 2 half-moves
21 Rh7 loss in 2 half-moves