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EGTB: win in 4 half-moves

# move score
1 Nb4 win in 3 half-moves
2 g8=B draw
3 Nc1 draw
4 Nc3 draw
5 Rb1 draw
6 Re2 draw
7 Re3 draw
8 Re4 draw
9 Re7 draw
10 Rg1 draw
11 Rh1 draw
12 Ra1 loss in 4 half-moves
13 g8=K loss in 2 half-moves
14 g8=N loss in 2 half-moves
15 g8=Q loss in 2 half-moves
16 g8=R loss in 2 half-moves
17 Rc1 loss in 2 half-moves
18 Rd1 loss in 2 half-moves
19 Re5 loss in 2 half-moves
20 Re6 loss in 2 half-moves
21 Re8 loss in 2 half-moves
22 Rf1 loss in 2 half-moves