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 Kd8 draw
3 Rb1 draw
4 Rb2 draw
5 Rb4 draw
6 Rb5 draw
7 Rb6 draw
8 Ra8 loss in 10 half-moves
9 Kb7 loss in 2 half-moves
10 Kc7 loss in 2 half-moves
11 Kd7 loss in 2 half-moves
12 Rb7 loss in 2 half-moves