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EGTB: win in 4 half-moves

# move score
1 Rg2 win in 3 half-moves
2 Ra5 draw
3 Rb5 draw
4 Rc5 draw
5 Rg1 draw
6 Rg3 draw
7 Rg4 draw
8 g8=B loss in 2 half-moves
9 g8=K loss in 2 half-moves
10 g8=N loss in 2 half-moves
11 g8=Q loss in 2 half-moves
12 g8=R loss in 2 half-moves
13 Nf3 loss in 2 half-moves
14 Nf5 loss in 2 half-moves
15 Ng2 loss in 2 half-moves
16 Ng6 loss in 2 half-moves
17 Rd5 loss in 2 half-moves
18 Re5 loss in 2 half-moves
19 Rf5 loss in 2 half-moves
20 Rg6 loss in 2 half-moves
21 Rh5 loss in 2 half-moves