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

EGTB: win in 6 half-moves

# move score
1 Rb4 win in 5 half-moves
2 Kc2 draw
3 Kc3 draw
4 Kc4 draw
5 Rb8 draw
6 Rc6 draw
7 Ka2 loss in 2 half-moves
8 Ka3 loss in 2 half-moves
9 Ka4 loss in 2 half-moves
10 Kb2 loss in 2 half-moves
11 Kb4 loss in 2 half-moves
12 Kd5 loss in 2 half-moves
13 Kd7 loss in 2 half-moves
14 Ke5 loss in 2 half-moves
15 Ke6 loss in 2 half-moves
16 Ke7 loss in 2 half-moves
17 Ra6 loss in 2 half-moves
18 Rb5 loss in 2 half-moves
19 Rb7 loss in 2 half-moves
20 Kc5 loss in 1 half-moves
21 Kc6 loss in 1 half-moves
22 Kc7 loss in 1 half-moves