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EGTB: win in 4 half-moves

# move score
1 Rg7 win in 3 half-moves
2 Kg5 draw
3 Rd8 draw
4 Rf8 draw
5 Kg7 loss in 4 half-moves
6 Kf5 loss in 2 half-moves
7 Kf6 loss in 2 half-moves
8 Kf7 loss in 2 half-moves
9 Kh5 loss in 2 half-moves
10 Kh6 loss in 2 half-moves
11 Kh7 loss in 2 half-moves
12 Ra8 loss in 2 half-moves
13 Rb8 loss in 2 half-moves
14 Rc8 loss in 2 half-moves
15 Re8 loss in 2 half-moves
16 Rh8 loss in 2 half-moves