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EGTB: win in 4 half-moves

# move score
1 Rg6 win in 3 half-moves
2 g8=B draw
3 g8=K draw
4 Rd2 draw
5 Re2 draw
6 Rf2 draw
7 Rg4 draw
8 Rg5 draw
9 Rh2 draw
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 Ne2 loss in 2 half-moves
14 Nf3 loss in 2 half-moves
15 Nh3 loss in 2 half-moves
16 Ra2 loss in 2 half-moves
17 Rb2 loss in 2 half-moves
18 Rc2 loss in 2 half-moves
19 Rg3 loss in 2 half-moves