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

EGTB: win in 4 half-moves

# move score
1 Ra8 win in 3 half-moves
2 Rb8 win in 3 half-moves
3 Rc8 win in 3 half-moves
4 Rd8 win in 3 half-moves
5 Ka1 draw
6 Ka2 draw
7 Ka3 draw
8 Kb3 draw
9 Kbb1 draw
10 Kbc2 draw
11 Kc3 draw
12 Kcb1 draw
13 Kcc2 draw
14 Re8 draw
15 Rf1 draw
16 Rf5 draw
17 Rf6 draw
18 Rf7 draw
19 Kd1 loss in 2 half-moves
20 Kd2 loss in 2 half-moves
21 Rf2 loss in 2 half-moves
22 Rf3 loss in 2 half-moves
23 Rf4 loss in 2 half-moves
24 Rg8 loss in 2 half-moves
25 Rh8 loss in 2 half-moves