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

EGTB: win in 2 half-moves

# move score
1 Rb3 win in 1 half-moves
2 Ka6 draw
3 Ka7 draw
4 Ka8 draw
5 Kb2 draw
6 Kb6 draw
7 Kb8 draw
8 Kc2 draw
9 Kd1 draw
10 Kd2 draw
11 Ra1 draw
12 Rb2 draw
13 Rb4 draw
14 Kc6 loss in 2 half-moves
15 Kc7 loss in 2 half-moves
16 Kc8 loss in 2 half-moves
17 Rb5 loss in 2 half-moves
18 Rb6 loss in 2 half-moves