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

EGTB: win in 2 half-moves

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