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EGTB: win in 4 half-moves

# move score
1 Ra7 win in 3 half-moves
2 Kc6 draw
3 Kc7 draw
4 Kdd7 draw
5 Kde7 draw
6 Ked7 draw
7 Kee7 draw
8 Kf7 draw
9 Ra6 draw
10 Ra8 draw
11 Rb1 draw
12 Rc1 draw
13 Rg1 draw
14 Kc5 loss in 2 half-moves
15 Kdd5 loss in 2 half-moves
16 Kde5 loss in 2 half-moves
17 Ked5 loss in 2 half-moves
18 Kee5 loss in 2 half-moves
19 Kf5 loss in 2 half-moves
20 Kf6 loss in 2 half-moves
21 Ra2 loss in 2 half-moves
22 Ra3 loss in 2 half-moves
23 Ra4 loss in 2 half-moves
24 Ra5 loss in 2 half-moves
25 Rd1 loss in 2 half-moves
26 Re1 loss in 2 half-moves
27 Rf1 loss in 2 half-moves
28 Rh1 loss in 2 half-moves