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EGTB: win in 4 half-moves

# move score
1 Rb4 win in 3 half-moves
2 Kd2 draw
3 Ke2 draw
4 Kf2 draw
5 Ra8 draw
6 Rb1 draw
7 Rb2 draw
8 Rb3 draw
9 Rb5 draw
10 Rc8 draw
11 Rd8 draw
12 Re8 draw
13 Kd3 loss in 2 half-moves
14 Kd4 loss in 2 half-moves
15 Ke4 loss in 2 half-moves
16 Kf3 loss in 2 half-moves
17 Kf4 loss in 2 half-moves
18 Kg4 loss in 2 half-moves
19 Kg5 loss in 2 half-moves
20 Kg6 loss in 2 half-moves
21 Kh4 loss in 2 half-moves
22 Kh6 loss in 2 half-moves
23 Rb6 loss in 2 half-moves
24 Rb7 loss in 2 half-moves
25 Rf8 loss in 2 half-moves
26 Rg8 loss in 2 half-moves
27 Rh8 loss in 2 half-moves