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EGTB: win in 4 half-moves

# move score
1 Rb4 win in 3 half-moves
2 N1d2 draw
3 N3d2 draw
4 Na1 draw
5 Nc1 draw
6 Ra8 draw
7 Rc8 draw
8 Na5 loss in 4 half-moves
9 Rh8 loss in 4 half-moves
10 Na3 loss in 2 half-moves
11 Nc3 loss in 2 half-moves
12 Nc5 loss in 2 half-moves
13 Nd4 loss in 2 half-moves
14 Rb5 loss in 2 half-moves
15 Rb6 loss in 2 half-moves
16 Rb7 loss in 2 half-moves
17 Rd8 loss in 2 half-moves
18 Re8 loss in 2 half-moves
19 Rf8 loss in 2 half-moves
20 Rg8 loss in 1 half-moves