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EGTB: win in 4 half-moves

# move score
1 Rb5 win in 3 half-moves
2 K6e7 draw
3 K6f7 draw
4 K6g7 draw
5 K8e7 draw
6 K8f7 draw
7 K8g7 draw
8 Ke6 draw
9 Ke8 draw
10 Kg5 draw
11 Ra4 draw
12 Rb6 draw
13 Rb7 draw
14 Rb8 draw
15 Rc4 draw
16 Rg4 draw
17 Rh4 draw
18 Ke5 loss in 2 half-moves
19 Kf5 loss in 2 half-moves
20 Kg6 loss in 2 half-moves
21 Kg8 loss in 2 half-moves
22 Rb1 loss in 2 half-moves
23 Rb2 loss in 2 half-moves
24 Rb3 loss in 2 half-moves
25 Rd4 loss in 2 half-moves
26 Re4 loss in 2 half-moves
27 Rf4 loss in 2 half-moves