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

EGTB: win in 2 half-moves

# move score
1 Rb4 win in 1 half-moves
2 Kc1 draw
3 Kc2 draw
4 Kc3 draw
5 Kd1 draw
6 Kd3 draw
7 Ke1 draw
8 Ke3 draw
9 Rb1 draw
10 Rb3 draw
11 Ke2 loss in 4 half-moves
12 Ra2 loss in 4 half-moves
13 Rb7 loss in 2 half-moves
14 Rb8 loss in 2 half-moves
15 Rc2 loss in 2 half-moves
16 Rb5 loss in 1 half-moves
17 Rb6 loss in 1 half-moves