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EGTB: win in 4 half-moves

# move score
1 Rb2 win in 3 half-moves
2 Rb3 win in 3 half-moves
3 Kd1 draw
4 Ke1 draw
5 Kf1 draw
6 Rb1 draw
7 Rb4 draw
8 Rb8 draw
9 Rc7 draw
10 Re7 draw
11 Rf7 draw
12 Rg7 draw
13 Kd2 loss in 2 half-moves
14 Kd3 loss in 2 half-moves
15 Ke3 loss in 2 half-moves
16 Kf2 loss in 2 half-moves
17 Kf3 loss in 2 half-moves
18 Kg2 loss in 2 half-moves
19 Kg3 loss in 2 half-moves
20 Kg4 loss in 2 half-moves
21 Kh2 loss in 2 half-moves
22 Kh4 loss in 2 half-moves
23 Ra7 loss in 2 half-moves
24 Rb5 loss in 2 half-moves
25 Rb6 loss in 2 half-moves
26 Rd7 loss in 2 half-moves
27 Rh7 loss in 2 half-moves