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

EGTB: win in 2 half-moves

# move score
1 Rg4 win in 1 half-moves
2 Ka3 draw
3 Ka4 draw
4 Ka5 draw
5 Kb3 draw
6 Kb5 draw
7 Kc3 draw
8 Kc4 draw
9 Rh3 draw
10 Rh5 draw
11 Rh6 draw
12 Rh2 loss in 4 half-moves
13 Kc5 loss in 2 half-moves
14 Rc4 loss in 2 half-moves
15 Rd4 loss in 2 half-moves
16 Re4 loss in 2 half-moves
17 Rf4 loss in 2 half-moves
18 Rh7 loss in 2 half-moves
19 Rh8 loss in 2 half-moves
20 Rh1 loss in 1 half-moves