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EGTB: win in 4 half-moves

# move score
1 Rb2 win in 3 half-moves
2 Kg1 draw
3 Kh1 draw
4 Ra7 draw
5 Rb1 draw
6 Rb3 draw
7 Rb4 draw
8 Rb5 draw
9 Rb6 draw
10 Rc7 draw
11 Rd7 draw
12 Re7 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 Kg2 loss in 2 half-moves
22 Kg3 loss in 2 half-moves
23 Kh3 loss in 2 half-moves
24 Rb8 loss in 2 half-moves
25 Rf7 loss in 2 half-moves
26 Rg7 loss in 2 half-moves
27 Rh7 loss in 2 half-moves