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EGTB: win in 4 half-moves

# move score
1 Rb8 win in 3 half-moves
2 Nb4 draw
3 Nb8 draw
4 Nc5 draw
5 Nc7 draw
6 Ra8 draw
7 Rd8 draw
8 Re8 draw
9 Ba2 loss in 2 half-moves
10 Bb3 loss in 2 half-moves
11 Bc4 loss in 2 half-moves
12 Bd5 loss in 2 half-moves
13 Be6 loss in 2 half-moves
14 Be8 loss in 2 half-moves
15 Bg6 loss in 2 half-moves
16 Bg8 loss in 2 half-moves
17 Bh5 loss in 2 half-moves
18 Rc8 loss in 2 half-moves
19 Rg8 loss in 2 half-moves
20 Rh8 loss in 2 half-moves