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EGTB: win in 4 half-moves

# move score
1 Rb7 win in 3 half-moves
2 Rc7 win in 3 half-moves
3 Bb4 draw
4 Bd2 draw
5 Bd8 draw
6 Nb6 draw
7 Ra6 draw
8 Ra8 draw
9 Bb6 loss in 2 half-moves
10 Bc3 loss in 2 half-moves
11 Bc7 loss in 2 half-moves
12 Be1 loss in 2 half-moves
13 Nb2 loss in 2 half-moves
14 Nc3 loss in 2 half-moves
15 Nc5 loss in 2 half-moves
16 Rd7 loss in 2 half-moves
17 Re7 loss in 2 half-moves
18 Rf7 loss in 2 half-moves
19 Rg7 loss in 2 half-moves
20 Rh7 loss in 2 half-moves