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EGTB: win in 4 half-moves

# move score
1 Rb8 win in 3 half-moves
2 Kd8 draw
3 Kf8 draw
4 Kg6 draw
5 Kg8 draw
6 Kh6 draw
7 Kh8 draw
8 Ra5 draw
9 Rb1 draw
10 Rb6 draw
11 Rb7 draw
12 Rc5 draw
13 Rg5 draw
14 Rh5 draw
15 Kd7 loss in 2 half-moves
16 Ke7 loss in 2 half-moves
17 Kf7 loss in 2 half-moves
18 Kg7 loss in 2 half-moves
19 Rb2 loss in 2 half-moves
20 Rb3 loss in 2 half-moves
21 Rb4 loss in 2 half-moves
22 Rd5 loss in 2 half-moves
23 Re5 loss in 2 half-moves
24 Rf5 loss in 2 half-moves