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 Rb8 win in 1 half-moves
3 Kb6 draw
4 Kc7 draw
5 Kd5 draw
6 Kd6 draw
7 Rb1 draw
8 Rb2 draw
9 Rb3 draw
10 Rb5 draw
11 Rb6 draw
12 Rc7 draw
13 Rd7 draw
14 Re7 draw
15 Rf7 draw
16 Rg7 draw
17 Rh7 draw
18 Kb5 loss in 2 half-moves
19 Kc5 loss in 2 half-moves
20 Kd7 loss in 2 half-moves
21 Ra7 loss in 2 half-moves