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EGTB: win in 4 half-moves

# move score
1 Rb1 win in 3 half-moves
2 Ka7 draw
3 Ka8 draw
4 Ra1 draw
5 Rc1 draw
6 Rd1 draw
7 Re1 draw
8 Rf6 draw
9 Rf7 draw
10 Rf8 draw
11 Kb2 loss in 2 half-moves
12 Kb3 loss in 2 half-moves
13 Kb4 loss in 2 half-moves
14 Kb7 loss in 2 half-moves
15 Kc2 loss in 2 half-moves
16 Kc4 loss in 2 half-moves
17 Kc7 loss in 2 half-moves
18 Kc8 loss in 2 half-moves
19 Kd2 loss in 2 half-moves
20 Kd3 loss in 2 half-moves
21 Kd4 loss in 2 half-moves
22 Rf2 loss in 2 half-moves
23 Rf3 loss in 2 half-moves
24 Rf4 loss in 2 half-moves
25 Rf5 loss in 2 half-moves
26 Rg1 loss in 2 half-moves
27 Rh1 loss in 2 half-moves