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EGTB: win in 4 half-moves

# move score
1 Rb4 win in 3 half-moves
2 Kd5 draw
3 Kd6 draw
4 Kd7 draw
5 Ra4 draw
6 Rc4 draw
7 Rd4 draw
8 Re4 draw
9 Rf4 draw
10 Rg1 draw
11 Rg2 draw
12 Rg8 draw
13 Ka1 loss in 2 half-moves
14 Ka2 loss in 2 half-moves
15 Kb2 loss in 2 half-moves
16 Kb5 loss in 2 half-moves
17 Kb6 loss in 2 half-moves
18 Kb7 loss in 2 half-moves
19 Kc1 loss in 2 half-moves
20 Kc2 loss in 2 half-moves
21 Kc5 loss in 2 half-moves
22 Kc7 loss in 2 half-moves
23 Rg3 loss in 2 half-moves
24 Rg5 loss in 2 half-moves
25 Rg6 loss in 2 half-moves
26 Rg7 loss in 2 half-moves
27 Rh4 loss in 2 half-moves