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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 Kf1 draw
4 Kg1 draw
5 Kh1 draw
6 Ra8 draw
7 Rb1 draw
8 Rb4 draw
9 Rb5 draw
10 Rf8 draw
11 Rg8 draw
12 Rh8 draw
13 Kc2 loss in 2 half-moves
14 Kc3 loss in 2 half-moves
15 Kc4 loss in 2 half-moves
16 Kd2 loss in 2 half-moves
17 Kd4 loss in 2 half-moves
18 Ke2 loss in 2 half-moves
19 Ke3 loss in 2 half-moves
20 Ke4 loss in 2 half-moves
21 Kf2 loss in 2 half-moves
22 Kf3 loss in 2 half-moves
23 Kg3 loss in 2 half-moves
24 Kh2 loss in 2 half-moves
25 Kh3 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 Re8 loss in 2 half-moves