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

EGTB: win in 2 half-moves

# move score
1 Rb5 win in 1 half-moves
2 Rb6 win in 1 half-moves
3 Kb7 draw
4 Ra8 draw
5 Rb4 draw
6 Kc7 loss in 2 half-moves
7 Kd7 loss in 2 half-moves
8 Kd8 loss in 2 half-moves
9 Rb1 loss in 2 half-moves
10 Rb2 loss in 2 half-moves
11 Rb7 loss in 2 half-moves
12 Rb3 loss in 1 half-moves