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

EGTB: win in 2 half-moves

# move score
1 Rb1 win in 1 half-moves
2 Kb4 loss in 6 half-moves
3 Kb6 loss in 2 half-moves
4 Kc4 loss in 2 half-moves
5 Kc6 loss in 2 half-moves
6 Kd4 loss in 2 half-moves
7 Kd5 loss in 2 half-moves
8 Kd6 loss in 2 half-moves
9 Ra5 loss in 2 half-moves
10 Rb2 loss in 2 half-moves
11 Rb3 loss in 2 half-moves
12 Rb4 loss in 2 half-moves
13 Rb6 loss in 2 half-moves
14 Rb7 loss in 2 half-moves
15 Rb8 loss in 2 half-moves