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EGTB: win in 4 half-moves

# move score
1 Rb8 win in 3 half-moves
2 K6f7 draw
3 K6g7 draw
4 K6h7 draw
5 K8f7 draw
6 K8g7 draw
7 K8h7 draw
8 Kf8 draw
9 Kg5 draw
10 Kh5 draw
11 Kh6 draw
12 Kh8 draw
13 Ra1 draw
14 Rb2 draw
15 Rb6 draw
16 Rb7 draw
17 Rf1 draw
18 Rg1 draw
19 Rh1 draw
20 Kf5 loss in 2 half-moves
21 Kf6 loss in 2 half-moves
22 Rb3 loss in 2 half-moves
23 Rb4 loss in 2 half-moves
24 Rb5 loss in 2 half-moves
25 Rc1 loss in 2 half-moves
26 Rd1 loss in 2 half-moves
27 Re1 loss in 2 half-moves