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 Ra2 draw
3 Rb2 draw
4 Rd2 draw
5 Rg3 draw
6 Kf4 loss in 2 half-moves
7 Kf5 loss in 2 half-moves
8 Kf6 loss in 2 half-moves
9 Kgg4 loss in 2 half-moves
10 Kgg6 loss in 2 half-moves
11 Kgh4 loss in 2 half-moves
12 Kgh6 loss in 2 half-moves
13 Khg4 loss in 2 half-moves
14 Khg6 loss in 2 half-moves
15 Khh4 loss in 2 half-moves
16 Khh6 loss in 2 half-moves
17 Rc2 loss in 2 half-moves
18 Re2 loss in 2 half-moves
19 Rf2 loss in 2 half-moves
20 Rg1 loss in 2 half-moves
21 Rh2 loss in 2 half-moves