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EGTB: win in 4 half-moves

# move score
1 Ra6 win in 3 half-moves
2 g8=B draw
3 Ra3 draw
4 Ra7 draw
5 Ra8 draw
6 Rb2 draw
7 Rc2 draw
8 g8=K loss in 4 half-moves
9 g8=N loss in 4 half-moves
10 g8=Q loss in 2 half-moves
11 g8=R loss in 2 half-moves
12 Nb1 loss in 2 half-moves
13 Nb3 loss in 2 half-moves
14 Nc4 loss in 2 half-moves
15 Ne4 loss in 2 half-moves
16 Nf1 loss in 2 half-moves
17 Nf3 loss in 2 half-moves
18 Ra1 loss in 2 half-moves
19 Ra4 loss in 2 half-moves
20 Ra5 loss in 2 half-moves