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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 Ke6 draw
5 Ra4 draw
6 Rc4 draw
7 Rd4 draw
8 Re4 draw
9 Rf4 draw
10 Rg1 draw
11 Rg2 draw
12 Rg3 draw
13 Kb1 loss in 2 half-moves
14 Kb2 loss in 2 half-moves
15 Kc2 loss in 2 half-moves
16 Kc4 loss in 2 half-moves
17 Kc5 loss in 2 half-moves
18 Kc6 loss in 2 half-moves
19 Kd1 loss in 2 half-moves
20 Kd2 loss in 2 half-moves
21 Kd4 loss in 2 half-moves
22 Kd6 loss in 2 half-moves
23 Rg5 loss in 2 half-moves
24 Rg6 loss in 2 half-moves
25 Rg7 loss in 2 half-moves
26 Rg8 loss in 2 half-moves
27 Rh4 loss in 2 half-moves