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EGTB: win in 4 half-moves

# move score
1 Rg4 win in 3 half-moves
2 Kd7 draw
3 Kd8 draw
4 Ke7 draw
5 Kf4 draw
6 Kf5 draw
7 Kf6 draw
8 Kf7 draw
9 Kf8 draw
10 Kg4 draw
11 Kg6 draw
12 Kh4 draw
13 Kh5 draw
14 Kh6 draw
15 Rb3 draw
16 Rf3 draw
17 Rh3 draw
18 Ra3 loss in 2 half-moves
19 Rc3 loss in 2 half-moves
20 Rd3 loss in 2 half-moves
21 Re3 loss in 2 half-moves
22 Rg1 loss in 2 half-moves
23 Rg2 loss in 2 half-moves