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EGTB: win in 4 half-moves

# move score
1 Rb6 win in 3 half-moves
2 Rb7 win in 3 half-moves
3 Kb8 draw
4 Kc8 draw
5 Kd8 draw
6 Rb3 draw
7 Rb4 draw
8 Rb5 draw
9 Rb8 draw
10 Rf2 draw
11 Rg2 draw
12 Rh2 draw
13 Kb6 loss in 2 half-moves
14 Kb7 loss in 2 half-moves
15 Kc6 loss in 2 half-moves
16 Kd6 loss in 2 half-moves
17 Kd7 loss in 2 half-moves
18 Kg5 loss in 2 half-moves
19 Kg6 loss in 2 half-moves
20 Kg7 loss in 2 half-moves
21 Kh5 loss in 2 half-moves
22 Kh7 loss in 2 half-moves
23 Ra2 loss in 2 half-moves
24 Rb1 loss in 2 half-moves
25 Rc2 loss in 2 half-moves
26 Rd2 loss in 2 half-moves
27 Re2 loss in 2 half-moves