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EGTB: win in 4 half-moves

# move score
1 Rb8 win in 3 half-moves
2 Rd8 win in 3 half-moves
3 Ra8 draw
4 Rc8 draw
5 Re8 draw
6 Rf8 draw
7 Rg1 draw
8 Rg5 draw
9 Rg6 draw
10 Rg7 draw
11 K5b5 loss in 2 half-moves
12 K5b6 loss in 2 half-moves
13 K5d5 loss in 2 half-moves
14 K5d6 loss in 2 half-moves
15 K6b5 loss in 2 half-moves
16 K6b6 loss in 2 half-moves
17 K6d5 loss in 2 half-moves
18 K6d6 loss in 2 half-moves
19 Kb4 loss in 2 half-moves
20 Kb7 loss in 2 half-moves
21 Kc4 loss in 2 half-moves
22 Kc7 loss in 2 half-moves
23 Kd4 loss in 2 half-moves
24 Kd7 loss in 2 half-moves
25 Rg2 loss in 2 half-moves
26 Rg3 loss in 2 half-moves
27 Rg4 loss in 2 half-moves
28 Rh8 loss in 2 half-moves