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EGTB: win in 4 half-moves

# move score
1 Rb3 win in 3 half-moves
2 Kd2 draw
3 Kd3 draw
4 Ke2 draw
5 Kf2 draw
6 Kf3 draw
7 Kg3 draw
8 Kh3 draw
9 Kh5 draw
10 Ra8 draw
11 Rb1 draw
12 Rb2 draw
13 Rc8 draw
14 Rg8 draw
15 Rh8 draw
16 Kd4 loss in 2 half-moves
17 Ke4 loss in 2 half-moves
18 Kf4 loss in 2 half-moves
19 Kg4 loss in 2 half-moves
20 Kg5 loss in 2 half-moves
21 Rb4 loss in 2 half-moves
22 Rb5 loss in 2 half-moves
23 Rb6 loss in 2 half-moves
24 Rb7 loss in 2 half-moves
25 Rd8 loss in 2 half-moves
26 Re8 loss in 2 half-moves
27 Rf8 loss in 2 half-moves