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 Kc2 draw
3 Kc3 draw
4 Rb4 draw
5 Ra7 loss in 12 half-moves
6 Kb1 loss in 10 half-moves
7 Kb3 loss in 10 half-moves
8 Kc1 loss in 10 half-moves
9 Ka1 loss in 8 half-moves
10 Ka2 loss in 8 half-moves
11 Rc7 loss in 8 half-moves
12 Ka3 loss in 6 half-moves
13 Rd7 loss in 4 half-moves
14 Rb3 loss in 2 half-moves
15 Rb5 loss in 2 half-moves
16 Rb6 loss in 2 half-moves
17 Re7 loss in 2 half-moves
18 Rf7 loss in 2 half-moves
19 Rg7 loss in 2 half-moves
20 Rh7 loss in 1 half-moves