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

EGTB: win in 2 half-moves

# move score
1 Rb6 win in 1 half-moves
2 Ra7 draw
3 Rf7 draw
4 Rg7 draw
5 Rh7 draw
6 K1b1 loss in 2 half-moves
7 K1b2 loss in 2 half-moves
8 K2b1 loss in 2 half-moves
9 K2b2 loss in 2 half-moves
10 Ka3 loss in 2 half-moves
11 Kb3 loss in 2 half-moves
12 Rb1 loss in 2 half-moves
13 Rb2 loss in 2 half-moves
14 Rb3 loss in 2 half-moves
15 Rb4 loss in 2 half-moves
16 Rb5 loss in 2 half-moves
17 Rb8 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