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EGTB: win in 4 half-moves

# move score
1 Kb4 win in 3 half-moves
2 Ra5 draw
3 Ra6 draw
4 Ra7 draw
5 Ra8 draw
6 Rf4 draw
7 Rg4 draw
8 Rh4 draw
9 Ka2 loss in 2 half-moves
10 Kb2 loss in 2 half-moves
11 Kb3 loss in 2 half-moves
12 Kd5 loss in 2 half-moves
13 Kd6 loss in 2 half-moves
14 Kd7 loss in 2 half-moves
15 Ke5 loss in 2 half-moves
16 Ke7 loss in 2 half-moves
17 Kf5 loss in 2 half-moves
18 Kf6 loss in 2 half-moves
19 Kf7 loss in 2 half-moves
20 Rb4 loss in 2 half-moves
21 Rc4 loss in 2 half-moves
22 Rd4 loss in 2 half-moves
23 Re4 loss in 2 half-moves