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 Kd6 draw
3 Rb7 draw
4 Rb8 draw
5 Rb6 loss in 18 half-moves
6 Kc7 loss in 14 half-moves
7 Ra5 loss in 14 half-moves
8 Kb6 loss in 12 half-moves
9 Rc5 loss in 12 half-moves
10 Kd7 loss in 10 half-moves
11 Kb7 loss in 6 half-moves
12 Kc5 loss in 2 half-moves
13 Kd5 loss in 2 half-moves
14 Rb1 loss in 2 half-moves
15 Rb2 loss in 2 half-moves
16 Rb3 loss in 2 half-moves
17 Rd5 loss in 2 half-moves
18 Re5 loss in 2 half-moves
19 Rf5 loss in 2 half-moves
20 Rg5 loss in 1 half-moves
21 Rh5 loss in 1 half-moves