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EGTB: win in 4 half-moves

# move score
1 Rb4 win in 3 half-moves
2 Kc2 draw
3 Kd2 draw
4 Ke2 draw
5 Rb1 draw
6 Rb2 draw
7 Rb3 draw
8 Rb5 draw
9 Rb6 draw
10 Rf7 draw
11 Rg7 draw
12 Rh7 draw
13 Kc3 loss in 2 half-moves
14 Kc4 loss in 2 half-moves
15 Kd4 loss in 2 half-moves
16 Ke3 loss in 2 half-moves
17 Ke4 loss in 2 half-moves
18 Kg3 loss in 2 half-moves
19 Kg4 loss in 2 half-moves
20 Kg5 loss in 2 half-moves
21 Kh3 loss in 2 half-moves
22 Kh5 loss in 2 half-moves
23 Ra7 loss in 2 half-moves
24 Rb8 loss in 2 half-moves
25 Rc7 loss in 2 half-moves
26 Rd7 loss in 2 half-moves
27 Re7 loss in 2 half-moves