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EGTB: win in 4 half-moves

# move score
1 Ra8 win in 3 half-moves
2 K6b6 draw
3 K6b7 draw
4 K6d6 draw
5 K6d7 draw
6 K7b6 draw
7 K7b7 draw
8 K7d6 draw
9 K7d7 draw
10 Kb8 draw
11 Kc8 draw
12 Kd8 draw
13 Ra6 draw
14 Ra7 draw
15 Rf1 draw
16 Kb5 loss in 2 half-moves
17 Kc5 loss in 2 half-moves
18 Kd5 loss in 2 half-moves
19 Ra2 loss in 2 half-moves
20 Ra3 loss in 2 half-moves
21 Ra4 loss in 2 half-moves
22 Ra5 loss in 2 half-moves
23 Rb1 loss in 2 half-moves
24 Rc1 loss in 2 half-moves
25 Rd1 loss in 2 half-moves
26 Re1 loss in 2 half-moves
27 Rg1 loss in 2 half-moves
28 Rh1 loss in 2 half-moves