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EGTB: win in 4 half-moves

# move score
1 Rb4 win in 3 half-moves
2 Kg4 draw
3 Kh4 draw
4 Ra2 draw
5 Rb1 draw
6 Rb5 draw
7 Rb6 draw
8 Rc2 draw
9 Rd2 draw
10 Re2 draw
11 Rf2 draw
12 Kg5 loss in 2 half-moves
13 Kg6 loss in 2 half-moves
14 Kh6 loss in 2 half-moves
15 Rb3 loss in 2 half-moves
16 Rb7 loss in 2 half-moves
17 Rb8 loss in 2 half-moves
18 Rg2 loss in 2 half-moves
19 Rh2 loss in 2 half-moves