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 Rf7 draw
3 Rg7 draw
4 Rh7 draw
5 Ka2 loss in 2 half-moves
6 Ka4 loss in 2 half-moves
7 Ka5 loss in 2 half-moves
8 Ka6 loss in 2 half-moves
9 Kb1 loss in 2 half-moves
10 Kb2 loss in 2 half-moves
11 Kb4 loss in 2 half-moves
12 Kb6 loss in 2 half-moves
13 Kc4 loss in 2 half-moves
14 Kc5 loss in 2 half-moves
15 Kc6 loss in 2 half-moves
16 Ra7 loss in 2 half-moves
17 Rb6 loss in 2 half-moves
18 Rc7 loss in 2 half-moves
19 Rd7 loss in 2 half-moves
20 Re7 loss in 2 half-moves