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

EGTB: win in 4 half-moves

# move score
1 Rf5 win in 3 half-moves
2 Rf6 win in 3 half-moves
3 Rb8 win in 7 half-moves
4 Ka3 draw
5 Ka6 draw
6 Kaa5 draw
7 Kb6 draw
8 Kba5 draw
9 Kc5 draw
10 Kc6 draw
11 Ra8 draw
12 Rf7 draw
13 Rg8 draw
14 Rh8 draw
15 Kab4 loss in 2 half-moves
16 Kb3 loss in 2 half-moves
17 Kbb4 loss in 2 half-moves
18 Kc4 loss in 2 half-moves
19 Rc8 loss in 2 half-moves
20 Rd8 loss in 2 half-moves
21 Re8 loss in 2 half-moves
22 Rf1 loss in 2 half-moves
23 Rf2 loss in 2 half-moves
24 Rf3 loss in 2 half-moves
25 Rf4 loss in 2 half-moves