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EGTB: win in 4 half-moves

# move score
1 Rb2 win in 3 half-moves
2 Kb3 draw
3 Kc3 draw
4 Kd3 draw
5 Rb3 draw
6 Re6 draw
7 Kb1 loss in 2 half-moves
8 Kb2 loss in 2 half-moves
9 Kc1 loss in 2 half-moves
10 Kd1 loss in 2 half-moves
11 Kd2 loss in 2 half-moves
12 Kf1 loss in 2 half-moves
13 Kf2 loss in 2 half-moves
14 Kg2 loss in 2 half-moves
15 Kh1 loss in 2 half-moves
16 Kh2 loss in 2 half-moves
17 Ra6 loss in 2 half-moves
18 Rb1 loss in 2 half-moves
19 Rb4 loss in 2 half-moves
20 Rb5 loss in 2 half-moves
21 Rb7 loss in 2 half-moves
22 Rb8 loss in 2 half-moves
23 Rc6 loss in 2 half-moves
24 Rd6 loss in 2 half-moves
25 Rf6 loss in 2 half-moves
26 Rg6 loss in 2 half-moves
27 Rh6 loss in 2 half-moves