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EGTB: win in 4 half-moves

# move score
1 Rg4 win in 3 half-moves
2 Kb5 draw
3 Kc5 draw
4 Ra1 draw
5 Ra2 draw
6 Ra5 draw
7 Rd4 draw
8 Re4 draw
9 Rf4 draw
10 Rh4 draw
11 Ka6 loss in 2 half-moves
12 Ka7 loss in 2 half-moves
13 Kb7 loss in 2 half-moves
14 Kc6 loss in 2 half-moves
15 Kc7 loss in 2 half-moves
16 Ke7 loss in 2 half-moves
17 Ke8 loss in 2 half-moves
18 Kf7 loss in 2 half-moves
19 Kg7 loss in 2 half-moves
20 Kg8 loss in 2 half-moves
21 Ra3 loss in 2 half-moves
22 Ra6 loss in 2 half-moves
23 Ra7 loss in 2 half-moves
24 Ra8 loss in 2 half-moves
25 Rb4 loss in 2 half-moves
26 Rc4 loss in 2 half-moves
27 Ka5 loss in 1 half-moves