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EGTB: win in 4 half-moves

# move score
1 Rb2 win in 3 half-moves
2 Rb3 win in 3 half-moves
3 Kg1 draw
4 Kh1 draw
5 Rb1 draw
6 Rb4 draw
7 Rb5 draw
8 Rc8 draw
9 Re8 draw
10 Rf8 draw
11 Rg8 draw
12 Kd2 loss in 2 half-moves
13 Kd3 loss in 2 half-moves
14 Kd4 loss in 2 half-moves
15 Ke2 loss in 2 half-moves
16 Ke4 loss in 2 half-moves
17 Kf2 loss in 2 half-moves
18 Kf3 loss in 2 half-moves
19 Kf4 loss in 2 half-moves
20 Kg2 loss in 2 half-moves
21 Kg3 loss in 2 half-moves
22 Kh3 loss in 2 half-moves
23 Ra8 loss in 2 half-moves
24 Rb6 loss in 2 half-moves
25 Rb7 loss in 2 half-moves
26 Rd8 loss in 2 half-moves
27 Rh8 loss in 2 half-moves