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EGTB: win in 4 half-moves

# move score
1 Rg2 win in 3 half-moves
2 Rb3 draw
3 Rb4 draw
4 Rb8 draw
5 Rd2 draw
6 Re2 draw
7 Rf2 draw
8 Rh2 draw
9 Kg4 loss in 2 half-moves
10 Kg5 loss in 2 half-moves
11 Kg6 loss in 2 half-moves
12 Kh4 loss in 2 half-moves
13 Kh6 loss in 2 half-moves
14 Ra2 loss in 2 half-moves
15 Rb1 loss in 2 half-moves
16 Rb5 loss in 2 half-moves
17 Rb6 loss in 2 half-moves
18 Rb7 loss in 2 half-moves
19 Rc2 loss in 2 half-moves