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

EGTB: win in 4 half-moves

# move score
1 Rb3 win in 3 half-moves
2 Rb4 win in 3 half-moves
3 Rb5 win in 3 half-moves
4 Rb2 win in 7 half-moves
5 Ra7 draw
6 Rb1 draw
7 Rb6 draw
8 Rd7 draw
9 Re7 draw
10 Rf7 draw
11 Ke3 loss in 2 half-moves
12 Ke4 loss in 2 half-moves
13 Ke5 loss in 2 half-moves
14 Kff3 loss in 2 half-moves
15 Kff5 loss in 2 half-moves
16 Kfg3 loss in 2 half-moves
17 Kfg5 loss in 2 half-moves
18 Kgf3 loss in 2 half-moves
19 Kgf5 loss in 2 half-moves
20 Kgg3 loss in 2 half-moves
21 Kgg5 loss in 2 half-moves
22 Kh3 loss in 2 half-moves
23 Kh4 loss in 2 half-moves
24 Kh5 loss in 2 half-moves
25 Rb8 loss in 2 half-moves
26 Rc7 loss in 2 half-moves
27 Rg7 loss in 2 half-moves
28 Rh7 loss in 2 half-moves