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

EGTB: win in 2 half-moves

# move score
1 Rb3 win in 1 half-moves
2 Rb8 draw
3 Re7 draw
4 Rf7 draw
5 Ka1 loss in 2 half-moves
6 Ka2 loss in 2 half-moves
7 Kb2 loss in 2 half-moves
8 Kc1 loss in 2 half-moves
9 Kc2 loss in 2 half-moves
10 Ra7 loss in 2 half-moves
11 Rb2 loss in 2 half-moves
12 Rb4 loss in 2 half-moves
13 Rb5 loss in 2 half-moves
14 Rb6 loss in 2 half-moves
15 Rc7 loss in 2 half-moves
16 Rg7 loss in 2 half-moves
17 Rh7 loss in 2 half-moves
18 Rd7 loss in 1 half-moves