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 Kb7 draw
3 Kc7 draw
4 Kd7 draw
5 Rb1 draw
6 Rb3 draw
7 Rb4 draw
8 Kd8 loss in 4 half-moves
9 Ra8 loss in 4 half-moves
10 Rb5 loss in 2 half-moves
11 Rb6 loss in 2 half-moves
12 Rb7 loss in 2 half-moves