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 Ka7 draw
3 Kb2 draw
4 Kb7 draw
5 Kb8 draw
6 Kc2 draw
7 Kd1 draw
8 Kd2 draw
9 Ra1 draw
10 Rb2 draw
11 Rb3 draw
12 Rb5 draw
13 Rb6 loss in 2 half-moves
14 Rb7 loss in 2 half-moves
15 Rb8 loss in 2 half-moves