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EGTB: win in 4 half-moves

# move score
1 Rg1 win in 3 half-moves
2 Kg1 draw
3 Kg2 draw
4 Kh2 draw
5 Ra2 draw
6 Ra3 draw
7 Ra7 draw
8 Ra8 draw
9 Rb2 draw
10 Rb3 draw
11 Rb7 draw
12 Rb8 draw
13 Ra4 loss in 2 half-moves
14 Ra5 loss in 2 half-moves
15 Ra6 loss in 2 half-moves
16 Rb4 loss in 2 half-moves
17 Rb5 loss in 2 half-moves
18 Rb6 loss in 2 half-moves
19 Rc1 loss in 2 half-moves
20 Rd1 loss in 2 half-moves
21 Re1 loss in 2 half-moves
22 Rf1 loss in 2 half-moves