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

EGTB: win in 4 half-moves

# move score
1 Rg4 win in 3 half-moves
2 Rg5 win in 3 half-moves
3 K3g3 draw
4 K3g4 draw
5 K4g3 draw
6 K4g4 draw
7 Kg2 draw
8 Kg5 draw
9 Kh2 draw
10 Kh5 draw
11 Ra8 draw
12 Re8 draw
13 Rf8 draw
14 Rg3 draw
15 Rg6 draw
16 Rg7 draw
17 Rh8 draw
18 Rb8 loss in 2 half-moves
19 Rc8 loss in 2 half-moves
20 Rd8 loss in 2 half-moves
21 Rg1 loss in 2 half-moves
22 Rg2 loss in 2 half-moves