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EGTB: win in 4 half-moves

# move score
1 Rb8 win in 3 half-moves
2 Ka7 draw
3 Kb8 draw
4 Kd3 draw
5 Kd4 draw
6 Ke3 draw
7 Ke5 draw
8 Ra1 draw
9 Rb4 draw
10 Rb5 draw
11 Rb6 draw
12 Rb7 draw
13 Rc1 draw
14 Rd1 draw
15 Re1 draw
16 Kb7 loss in 2 half-moves
17 Kd5 loss in 2 half-moves
18 Kf3 loss in 2 half-moves
19 Kf4 loss in 2 half-moves
20 Kf5 loss in 2 half-moves
21 Rb2 loss in 2 half-moves
22 Rb3 loss in 2 half-moves
23 Rf1 loss in 2 half-moves
24 Rg1 loss in 2 half-moves
25 Rh1 loss in 2 half-moves