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EGTB: win in 4 half-moves

# move score
1 Rb3 win in 3 half-moves
2 Kb1 draw
3 Kc1 draw
4 Kd1 draw
5 Ra8 draw
6 Rb1 draw
7 Rb2 draw
8 Rb4 draw
9 Re8 draw
10 Rf8 draw
11 Rg8 draw
12 Kb2 loss in 2 half-moves
13 Kb3 loss in 2 half-moves
14 Kc3 loss in 2 half-moves
15 Kd2 loss in 2 half-moves
16 Kd3 loss in 2 half-moves
17 Kf3 loss in 2 half-moves
18 Kf4 loss in 2 half-moves
19 Kf5 loss in 2 half-moves
20 Kg3 loss in 2 half-moves
21 Kg5 loss in 2 half-moves
22 Kh3 loss in 2 half-moves
23 Kh4 loss in 2 half-moves
24 Kh5 loss in 2 half-moves
25 Rb5 loss in 2 half-moves
26 Rb6 loss in 2 half-moves
27 Rb7 loss in 2 half-moves
28 Rc8 loss in 2 half-moves
29 Rd8 loss in 2 half-moves
30 Rh8 loss in 2 half-moves