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

EGTB: win in 4 half-moves

# move score
1 Rg8 win in 3 half-moves
2 Ra8 draw
3 Rb1 draw
4 Rb5 draw
5 Rb6 draw
6 Rb7 draw
7 Rf8 draw
8 Rh8 draw
9 K4e4 loss in 2 half-moves
10 K4e5 loss in 2 half-moves
11 K4g4 loss in 2 half-moves
12 K4g5 loss in 2 half-moves
13 K5e4 loss in 2 half-moves
14 K5e5 loss in 2 half-moves
15 K5g4 loss in 2 half-moves
16 K5g5 loss in 2 half-moves
17 Ke3 loss in 2 half-moves
18 Ke6 loss in 2 half-moves
19 Kf3 loss in 2 half-moves
20 Kf6 loss in 2 half-moves
21 Kg3 loss in 2 half-moves
22 Kg6 loss in 2 half-moves
23 Rb2 loss in 2 half-moves
24 Rb3 loss in 2 half-moves
25 Rb4 loss in 2 half-moves
26 Rc8 loss in 2 half-moves
27 Rd8 loss in 2 half-moves
28 Re8 loss in 2 half-moves