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EGTB: win in 4 half-moves

# move score
1 Rf8 win in 3 half-moves
2 Kb1 draw
3 Kd1 draw
4 Ra2 draw
5 Ra4 draw
6 Raa8 draw
7 Rab1 draw
8 Rb2 draw
9 Rb4 draw
10 Rba8 draw
11 Rbb1 draw
12 Rc8 draw
13 Rd8 draw
14 Re8 draw
15 Kb2 loss in 2 half-moves
16 Kc2 loss in 2 half-moves
17 Kd2 loss in 2 half-moves
18 Ra3 loss in 2 half-moves
19 Ra5 loss in 2 half-moves
20 Ra6 loss in 2 half-moves
21 Ra7 loss in 2 half-moves
22 Rb3 loss in 2 half-moves
23 Rb5 loss in 2 half-moves
24 Rb6 loss in 2 half-moves
25 Rb7 loss in 2 half-moves
26 Rg8 loss in 2 half-moves
27 Rh8 loss in 2 half-moves