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EGTB: win in 4 half-moves

# move score
1 Rg7 win in 3 half-moves
2 Rb2 draw
3 Rd2 draw
4 Re2 draw
5 Rf2 draw
6 Rg1 draw
7 Rg5 draw
8 Rg6 draw
9 Rg8 draw
10 Ke7 loss in 2 half-moves
11 Ke8 loss in 2 half-moves
12 Kf7 loss in 2 half-moves
13 Kfg7 loss in 2 half-moves
14 Kfg8 loss in 2 half-moves
15 Kh7 loss in 2 half-moves
16 Khg7 loss in 2 half-moves
17 Khg8 loss in 2 half-moves
18 Ra2 loss in 2 half-moves
19 Rc2 loss in 2 half-moves
20 Rg3 loss in 2 half-moves
21 Rg4 loss in 2 half-moves
22 Rh2 loss in 2 half-moves