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EGTB: win in 4 half-moves

# move score
1 Rg1 win in 3 half-moves
2 Rg4 win in 3 half-moves
3 Ra6 draw
4 Rc6 draw
5 Rd6 draw
6 Re6 draw
7 Rg2 draw
8 Rg3 draw
9 Rg5 draw
10 Kb1 loss in 2 half-moves
11 Kb2 loss in 2 half-moves
12 Kb3 loss in 2 half-moves
13 Kc1 loss in 2 half-moves
14 Kc4 loss in 2 half-moves
15 Kcc3 loss in 2 half-moves
16 Kcd2 loss in 2 half-moves
17 Kd1 loss in 2 half-moves
18 Kd4 loss in 2 half-moves
19 Kdc3 loss in 2 half-moves
20 Kdd2 loss in 2 half-moves
21 Ke2 loss in 2 half-moves
22 Ke3 loss in 2 half-moves
23 Ke4 loss in 2 half-moves
24 Rb6 loss in 2 half-moves
25 Rf6 loss in 2 half-moves
26 Rg7 loss in 2 half-moves
27 Rg8 loss in 2 half-moves
28 Rh6 loss in 2 half-moves