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EGTB: win in 4 half-moves

# move score
1 Rg2 win in 3 half-moves
2 Ra7 draw
3 Rb7 draw
4 Rc7 draw
5 Rf7 draw
6 Rg1 draw
7 Rg3 draw
8 Rg4 draw
9 Rg8 draw
10 Ka1 loss in 2 half-moves
11 Ka2 loss in 2 half-moves
12 Kbb2 loss in 2 half-moves
13 Kbc2 loss in 2 half-moves
14 Kcb2 loss in 2 half-moves
15 Kcc2 loss in 2 half-moves
16 Kd1 loss in 2 half-moves
17 Kd2 loss in 2 half-moves
18 Rd7 loss in 2 half-moves
19 Re7 loss in 2 half-moves
20 Rg5 loss in 2 half-moves
21 Rg6 loss in 2 half-moves
22 Rh7 loss in 2 half-moves