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

EGTB: win in 2 half-moves

# move score
1 Rb4 win in 1 half-moves
2 Rb2 draw
3 Rb3 draw
4 Ra6 loss in 12 half-moves
5 Kb5 loss in 2 half-moves
6 Kb7 loss in 2 half-moves
7 Kc5 loss in 2 half-moves
8 Kc7 loss in 2 half-moves
9 Kd5 loss in 2 half-moves
10 Kd6 loss in 2 half-moves
11 Kd7 loss in 2 half-moves
12 Rb1 loss in 2 half-moves
13 Rb5 loss in 2 half-moves
14 Rb7 loss in 2 half-moves
15 Rb8 loss in 2 half-moves