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EGTB: win in 4 half-moves

# move score
1 Rb6 win in 3 half-moves
2 Kb7 draw
3 Kc7 draw
4 Kd7 draw
5 Rb7 draw
6 Re2 draw
7 Rf2 draw
8 Rg2 draw
9 Kb5 loss in 2 half-moves
10 Kb6 loss in 2 half-moves
11 Kc5 loss in 2 half-moves
12 Kd5 loss in 2 half-moves
13 Kd6 loss in 2 half-moves
14 Kg4 loss in 2 half-moves
15 Kg5 loss in 2 half-moves
16 Kg6 loss in 2 half-moves
17 Kh4 loss in 2 half-moves
18 Kh6 loss in 2 half-moves
19 Ra2 loss in 2 half-moves
20 Rb1 loss in 2 half-moves
21 Rb3 loss in 2 half-moves
22 Rb4 loss in 2 half-moves
23 Rb5 loss in 2 half-moves
24 Rb8 loss in 2 half-moves
25 Rc2 loss in 2 half-moves
26 Rd2 loss in 2 half-moves
27 Rh2 loss in 2 half-moves