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EGTB: win in 4 half-moves

# move score
1 Rb4 win in 3 half-moves
2 Ke4 draw
3 Ke5 draw
4 Kf5 draw
5 Kfg4 draw
6 Kg5 draw
7 Kh2 draw
8 Kh4 draw
9 Khg4 draw
10 Ra7 draw
11 Rb3 draw
12 Rb5 draw
13 Rb6 draw
14 Rb8 draw
15 Rc7 draw
16 Rf7 draw
17 Rg7 draw
18 Rh7 draw
19 Ke3 loss in 2 half-moves
20 Kf3 loss in 2 half-moves
21 Kfg3 loss in 2 half-moves
22 Kg2 loss in 2 half-moves
23 Khg3 loss in 2 half-moves
24 Rb1 loss in 2 half-moves
25 Rb2 loss in 2 half-moves
26 Rd7 loss in 2 half-moves
27 Re7 loss in 2 half-moves