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EGTB: win in 4 half-moves

# move score
1 Rb7 win in 3 half-moves
2 Rd7 win in 3 half-moves
3 Ra7 draw
4 Rc7 draw
5 Re7 draw
6 Rf7 draw
7 Rg3 draw
8 Rg4 draw
9 Rg5 draw
10 Rg6 draw
11 K6b7 loss in 2 half-moves
12 K6c7 loss in 2 half-moves
13 K6d7 loss in 2 half-moves
14 K8b7 loss in 2 half-moves
15 K8c7 loss in 2 half-moves
16 K8d7 loss in 2 half-moves
17 Kb5 loss in 2 half-moves
18 Kb6 loss in 2 half-moves
19 Kb8 loss in 2 half-moves
20 Kc5 loss in 2 half-moves
21 Kd5 loss in 2 half-moves
22 Kd6 loss in 2 half-moves
23 Kd8 loss in 2 half-moves
24 Rg1 loss in 2 half-moves
25 Rg2 loss in 2 half-moves
26 Rg8 loss in 2 half-moves
27 Rh7 loss in 2 half-moves