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 Kc5 loss in 2 half-moves
3 Kd5 loss in 2 half-moves
4 Kd6 loss in 2 half-moves
5 Kd8 loss in 2 half-moves
6 Ra8 loss in 2 half-moves
7 Rb1 loss in 2 half-moves
8 Rb2 loss in 2 half-moves
9 Rb3 loss in 2 half-moves
10 K6b7 loss in 1 half-moves
11 K6c7 loss in 1 half-moves
12 K6d7 loss in 1 half-moves
13 K8b7 loss in 1 half-moves
14 K8c7 loss in 1 half-moves
15 K8d7 loss in 1 half-moves
16 Kb5 loss in 1 half-moves
17 Kb6 loss in 1 half-moves
18 Rb5 loss in 1 half-moves
19 Rb6 loss in 1 half-moves
20 Rb7 loss in 1 half-moves