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

EGTB: win in 4 half-moves

# move score
1 Rb2 win in 3 half-moves
2 Rb3 win in 3 half-moves
3 Rb4 win in 7 half-moves
4 Ka1 draw
5 Ka2 draw
6 Kb2 draw
7 Kb3 draw
8 Kb4 draw
9 Kb5 draw
10 Kc1 draw
11 Kc2 draw
12 Kc3 draw
13 Kc5 draw
14 Kd3 draw
15 Ra8 draw
16 Rc8 draw
17 Rd8 draw
18 Rh8 draw
19 Kd4 loss in 2 half-moves
20 Kd5 loss in 2 half-moves
21 Rb5 loss in 2 half-moves
22 Rb6 loss in 2 half-moves
23 Rb7 loss in 2 half-moves
24 Re8 loss in 2 half-moves
25 Rf8 loss in 2 half-moves
26 Rg8 loss in 2 half-moves