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 Rb7 win in 3 half-moves
3 Rb6 win in 9 half-moves
4 Rb8 win in 11 half-moves
5 Kb5 draw
6 Kb6 draw
7 Kb7 draw
8 Kc7 draw
9 Kcd6 draw
10 Kcd7 draw
11 Ke7 draw
12 Ked6 draw
13 Ked7 draw
14 Kf5 draw
15 Kf6 draw
16 Kf7 draw
17 Ra4 draw
18 Rh4 draw
19 Kc5 loss in 2 half-moves
20 Kcd5 loss in 2 half-moves
21 Ke5 loss in 2 half-moves
22 Ked5 loss in 2 half-moves
23 Rb1 loss in 2 half-moves
24 Rb2 loss in 2 half-moves
25 Rb3 loss in 2 half-moves
26 Rc4 loss in 2 half-moves
27 Rd4 loss in 2 half-moves
28 Re4 loss in 2 half-moves
29 Rf4 loss in 2 half-moves
30 Rg4 loss in 2 half-moves