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 Kb6 draw
3 Kc7 draw
4 Kd6 draw
5 Kd7 draw
6 Ra7 draw
7 Rb6 draw
8 Rc7 draw
9 Rd7 draw
10 Re7 draw
11 Kb5 loss in 2 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 Rb5 loss in 2 half-moves
18 Rb8 loss in 2 half-moves
19 Rf7 loss in 1 half-moves
20 Rg7 loss in 1 half-moves
21 Rh7 loss in 1 half-moves