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