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EGTB: win in 4 half-moves

# move score
1 Rb7 win in 3 half-moves
2 Ra7 draw
3 Rc7 draw
4 Rg1 draw
5 Rg4 draw
6 Rg5 draw
7 Rg6 draw
8 Rh7 draw
9 Ka2 loss in 2 half-moves
10 Ka4 loss in 2 half-moves
11 Kab3 loss in 2 half-moves
12 Kab4 loss in 2 half-moves
13 Kb2 loss in 2 half-moves
14 Kb5 loss in 2 half-moves
15 Kc3 loss in 2 half-moves
16 Kc5 loss in 2 half-moves
17 Kcb3 loss in 2 half-moves
18 Kcb4 loss in 2 half-moves
19 Kd3 loss in 2 half-moves
20 Kd4 loss in 2 half-moves
21 Kd5 loss in 2 half-moves
22 Rd7 loss in 2 half-moves
23 Re7 loss in 2 half-moves
24 Rf7 loss in 2 half-moves
25 Rg2 loss in 2 half-moves
26 Rg3 loss in 2 half-moves
27 Rg8 loss in 2 half-moves