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EGTB: win in 4 half-moves

# move score
1 Rb1 win in 3 half-moves
2 Nf2 draw
3 Nf4 draw
4 Ra8 draw
5 Rb7 draw
6 Rc8 draw
7 Ng1 loss in 2 half-moves
8 Ng5 loss in 2 half-moves
9 Rb2 loss in 2 half-moves
10 Rb3 loss in 2 half-moves
11 Rb4 loss in 2 half-moves
12 Rb5 loss in 2 half-moves
13 Rb6 loss in 2 half-moves
14 Rd8 loss in 2 half-moves
15 Re8 loss in 2 half-moves
16 Rf8 loss in 2 half-moves
17 Rg8 loss in 2 half-moves
18 Rh8 loss in 2 half-moves