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EGTB: win in 4 half-moves

# move score
1 Rg2 win in 3 half-moves
2 K1g1 draw
3 K2g1 draw
4 Kh3 draw
5 Ra2 draw
6 Rb1 draw
7 Rb6 draw
8 Rc2 draw
9 K1g2 loss in 2 half-moves
10 K2g2 loss in 2 half-moves
11 Kg3 loss in 2 half-moves
12 Rb3 loss in 2 half-moves
13 Rb4 loss in 2 half-moves
14 Rb5 loss in 2 half-moves
15 Rb7 loss in 2 half-moves
16 Rb8 loss in 2 half-moves
17 Rd2 loss in 2 half-moves
18 Re2 loss in 2 half-moves
19 Rf2 loss in 2 half-moves