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

EGTB: win in 6 half-moves

# move score
1 Rb8 win in 5 half-moves
2 Rb6 win in 9 half-moves
3 Rb7 win in 15 half-moves
4 Ka2 draw
5 Kb3 draw
6 Kc6 draw
7 Kc7 draw
8 Kc8 draw
9 Kd6 draw
10 Kd8 draw
11 Ke6 draw
12 Ke7 draw
13 Ke8 draw
14 Ra4 draw
15 Rb2 draw
16 Rb5 draw
17 Rf4 draw
18 Ka4 loss in 2 half-moves
19 Rb1 loss in 2 half-moves
20 Rb3 loss in 2 half-moves
21 Rc4 loss in 2 half-moves
22 Rd4 loss in 2 half-moves
23 Re4 loss in 2 half-moves
24 Rg4 loss in 2 half-moves
25 Rh4 loss in 2 half-moves
26 Kb2 loss in 1 half-moves