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

EGTB: win in 4 half-moves

# move score
1 Rb5 win in 3 half-moves
2 Rc7 win in 3 half-moves
3 Rd7 win in 5 half-moves
4 Ke4 win in 7 half-moves
5 Kc4 draw
6 Kc5 draw
7 Kd5 draw
8 Ke5 draw
9 Ra7 draw
10 Rb4 draw
11 Rb6 draw
12 Rb8 draw
13 Rg7 draw
14 Rh7 draw
15 Kc3 loss in 2 half-moves
16 Kd3 loss in 2 half-moves
17 Ke3 loss in 2 half-moves
18 Rb1 loss in 2 half-moves
19 Rb2 loss in 2 half-moves
20 Rb3 loss in 2 half-moves
21 Re7 loss in 2 half-moves
22 Rf7 loss in 2 half-moves