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EGTB: win in 4 half-moves

# move score
1 Rb8 win in 3 half-moves
2 Kb6 draw
3 Kc6 draw
4 Kd6 draw
5 Ra3 draw
6 Rb4 draw
7 Rb5 draw
8 Rb6 draw
9 Rb7 draw
10 Re3 draw
11 Rf3 draw
12 Rg3 draw
13 Kb7 loss in 2 half-moves
14 Kb8 loss in 2 half-moves
15 Kc8 loss in 2 half-moves
16 Kd7 loss in 2 half-moves
17 Kd8 loss in 2 half-moves
18 Kg7 loss in 2 half-moves
19 Kg8 loss in 2 half-moves
20 Kh7 loss in 2 half-moves
21 Rb1 loss in 2 half-moves
22 Rb2 loss in 2 half-moves
23 Rc3 loss in 2 half-moves
24 Rd3 loss in 2 half-moves
25 Rh3 loss in 2 half-moves