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EGTB: win in 4 half-moves

# move score
1 Rg6 win in 3 half-moves
2 Kd1 draw
3 Kd2 draw
4 Kg6 draw
5 Ra7 draw
6 Rb7 draw
7 Rc7 draw
8 Rd7 draw
9 Re7 draw
10 Rg8 draw
11 Ke2 loss in 2 half-moves
12 Kf1 loss in 2 half-moves
13 Kf2 loss in 2 half-moves
14 Kf4 loss in 2 half-moves
15 Kf5 loss in 2 half-moves
16 Kf6 loss in 2 half-moves
17 Kg4 loss in 2 half-moves
18 Kh4 loss in 2 half-moves
19 Kh5 loss in 2 half-moves
20 Kh6 loss in 2 half-moves
21 Rf7 loss in 2 half-moves
22 Rh7 loss in 2 half-moves