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

EGTB: win in 2 half-moves

# move score
1 Rb2 win in 1 half-moves
2 Rb4 win in 1 half-moves
3 Rb6 win in 1 half-moves
4 Rb7 win in 1 half-moves
5 Rb8 win in 1 half-moves
6 Kb2 draw
7 Kc2 draw
8 Ra1 draw
9 Kd1 loss in 1 half-moves
10 Kd2 loss in 1 half-moves
11 Rb3 loss in 1 half-moves
12 Rb5 loss in 1 half-moves