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EGTB: win in 4 half-moves

# move score
1 Rg6 win in 3 half-moves
2 d8=K draw
3 Rb6 draw
4 Re3 draw
5 Re5 draw
6 Re7 draw
7 Re8 draw
8 Rh6 draw
9 d8=B loss in 2 half-moves
10 d8=N loss in 2 half-moves
11 d8=Q loss in 2 half-moves
12 d8=R loss in 2 half-moves
13 Ra6 loss in 2 half-moves
14 Rc6 loss in 2 half-moves
15 Rd6 loss in 2 half-moves
16 Re1 loss in 2 half-moves
17 Re2 loss in 2 half-moves
18 Re4 loss in 2 half-moves
19 Rf6 loss in 2 half-moves