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

EGTB: win in 4 half-moves

# move score
1 Rb8 win in 3 half-moves
2 Rd8 win in 3 half-moves
3 K4b4 draw
4 K4b5 draw
5 K4d4 draw
6 K4d5 draw
7 K5b4 draw
8 K5b5 draw
9 K5d4 draw
10 K5d5 draw
11 Kb3 draw
12 Kb6 draw
13 Kc3 draw
14 Kc6 draw
15 Kd3 draw
16 Kd6 draw
17 Ra8 draw
18 Rc8 draw
19 Re8 draw
20 Rf1 draw
21 Rf6 draw
22 Rf7 draw
23 Rf2 loss in 2 half-moves
24 Rf3 loss in 2 half-moves
25 Rf4 loss in 2 half-moves
26 Rf5 loss in 2 half-moves
27 Rg8 loss in 2 half-moves
28 Rh8 loss in 2 half-moves