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EGTB: win in 4 half-moves

# move score
1 Kb5 win in 3 half-moves
2 Kc5 draw
3 Kd5 draw
4 Ra1 draw
5 Ra6 draw
6 Ra7 draw
7 Rg5 draw
8 Rh5 draw
9 K6b6 loss in 2 half-moves
10 K6b7 loss in 2 half-moves
11 K6d6 loss in 2 half-moves
12 K6d7 loss in 2 half-moves
13 K7b6 loss in 2 half-moves
14 K7b7 loss in 2 half-moves
15 K7d6 loss in 2 half-moves
16 K7d7 loss in 2 half-moves
17 Kb8 loss in 2 half-moves
18 Kc8 loss in 2 half-moves
19 Kd8 loss in 2 half-moves
20 Ra2 loss in 2 half-moves
21 Ra3 loss in 2 half-moves
22 Ra4 loss in 2 half-moves
23 Ra8 loss in 2 half-moves
24 Rb5 loss in 2 half-moves
25 Rc5 loss in 2 half-moves
26 Rd5 loss in 2 half-moves
27 Re5 loss in 2 half-moves
28 Rf5 loss in 2 half-moves