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EGTB: win in 4 half-moves

# move score
1 Rg1 win in 3 half-moves
2 Rb3 draw
3 Rb7 draw
4 Rb8 draw
5 Rf1 draw
6 Rh1 draw
7 Kg5 loss in 2 half-moves
8 Kg6 loss in 2 half-moves
9 Kg7 loss in 2 half-moves
10 Kh5 loss in 2 half-moves
11 Kh7 loss in 2 half-moves
12 Ra1 loss in 2 half-moves
13 Rb2 loss in 2 half-moves
14 Rb4 loss in 2 half-moves
15 Rb5 loss in 2 half-moves
16 Rb6 loss in 2 half-moves
17 Rc1 loss in 2 half-moves
18 Rd1 loss in 2 half-moves
19 Re1 loss in 2 half-moves