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EGTB: win in 4 half-moves

# move score
1 Rb2 win in 3 half-moves
2 Kb2 draw
3 Ra6 draw
4 Ra7 draw
5 Ra8 draw
6 Rc2 draw
7 Rd2 draw
8 Re2 draw
9 Rf2 draw
10 Kb1 loss in 4 half-moves
11 Kc2 loss in 4 half-moves
12 Kd1 loss in 4 half-moves
13 Kd2 loss in 4 half-moves
14 Ra3 loss in 2 half-moves
15 Ra4 loss in 2 half-moves
16 Ra5 loss in 2 half-moves
17 Rb1 loss in 2 half-moves
18 Rg2 loss in 2 half-moves
19 Rh2 loss in 2 half-moves