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

EGTB: win in 40 half-moves

# move score
1 Kb6 win in 39 half-moves
2 Rb1 draw
3 Rb2 draw
4 Rb3 draw
5 Ka6 loss in 2 half-moves
6 Ka8 loss in 2 half-moves
7 Kb8 loss in 2 half-moves
8 Kc6 loss in 2 half-moves
9 Kc7 loss in 2 half-moves
10 Kc8 loss in 2 half-moves
11 Kd6 loss in 2 half-moves
12 Kd8 loss in 2 half-moves
13 Ke6 loss in 2 half-moves
14 Ke7 loss in 2 half-moves
15 Ke8 loss in 2 half-moves
16 Rb4 loss in 2 half-moves
17 Rb5 loss in 2 half-moves
18 Rb6 loss in 2 half-moves
19 Rb8 loss in 2 half-moves
20 Rc7 loss in 2 half-moves