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

EGTB: win in 6 half-moves

# move score
1 Rb2 win in 5 half-moves
2 Re7 draw
3 Rf7 draw
4 Rg7 draw
5 Ka2 loss in 2 half-moves
6 Ka4 loss in 2 half-moves
7 Kb2 loss in 2 half-moves
8 Kb3 loss in 2 half-moves
9 Kb4 loss in 2 half-moves
10 Kc1 loss in 2 half-moves
11 Kc2 loss in 2 half-moves
12 Kc3 loss in 2 half-moves
13 Kd1 loss in 2 half-moves
14 Kd3 loss in 2 half-moves
15 Ke1 loss in 2 half-moves
16 Ke2 loss in 2 half-moves
17 Ke3 loss in 2 half-moves
18 Ra7 loss in 2 half-moves
19 Rb1 loss in 2 half-moves
20 Rb3 loss in 2 half-moves
21 Rb4 loss in 2 half-moves
22 Rb5 loss in 2 half-moves
23 Rb6 loss in 2 half-moves
24 Rb8 loss in 2 half-moves
25 Rc7 loss in 2 half-moves
26 Rd7 loss in 2 half-moves
27 Rh7 loss in 2 half-moves