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EGTB: win in 4 half-moves

# move score
1 Rg4 win in 3 half-moves
2 Ra2 draw
3 Rd2 draw
4 Re2 draw
5 Rf2 draw
6 Rg3 draw
7 Kf4 loss in 2 half-moves
8 Kf5 loss in 2 half-moves
9 Kf6 loss in 2 half-moves
10 Kg4 loss in 2 half-moves
11 Kg7 loss in 2 half-moves
12 Kgg6 loss in 2 half-moves
13 Kgh5 loss in 2 half-moves
14 Kh4 loss in 2 half-moves
15 Kh7 loss in 2 half-moves
16 Khg6 loss in 2 half-moves
17 Khh5 loss in 2 half-moves
18 Rb2 loss in 2 half-moves
19 Rc2 loss in 2 half-moves
20 Rg1 loss in 2 half-moves
21 Rh2 loss in 2 half-moves