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EGTB: win in 4 half-moves

# move score
1 Rb5 win in 3 half-moves
2 Ka7 draw
3 Kb5 draw
4 Kb7 draw
5 Kc7 draw
6 Ke3 draw
7 Ke4 draw
8 Kf3 draw
9 Kg3 draw
10 Kg4 draw
11 Rb2 draw
12 Rb3 draw
13 Rb4 draw
14 Rf1 draw
15 Ka5 loss in 2 half-moves
16 Ka6 loss in 2 half-moves
17 Kc5 loss in 2 half-moves
18 Kc6 loss in 2 half-moves
19 Ke5 loss in 2 half-moves
20 Kf5 loss in 2 half-moves
21 Kg5 loss in 2 half-moves
22 Ra1 loss in 2 half-moves
23 Rc1 loss in 2 half-moves
24 Rd1 loss in 2 half-moves
25 Re1 loss in 2 half-moves
26 Rg1 loss in 2 half-moves
27 Rh1 loss in 2 half-moves