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EGTB: win in 4 half-moves

# move score
1 Rb6 win in 3 half-moves
2 Nb7 draw
3 Rb5 draw
4 Rb8 draw
5 Rh2 draw
6 Na3 loss in 2 half-moves
7 Nb3 loss in 2 half-moves
8 Nc3 loss in 2 half-moves
9 Nc4 loss in 2 half-moves
10 Nc6 loss in 2 half-moves
11 Nd2 loss in 2 half-moves
12 Ra2 loss in 2 half-moves
13 Rb3 loss in 2 half-moves
14 Rb4 loss in 2 half-moves
15 Rc2 loss in 2 half-moves
16 Rd2 loss in 2 half-moves
17 Rb7 loss in 1 half-moves
18 Re2 loss in 1 half-moves
19 Rf2 loss in 1 half-moves
20 Rg2 loss in 1 half-moves