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EGTB: win in 4 half-moves

# move score
1 Rg6 win in 3 half-moves
2 Rb1 draw
3 Rc1 draw
4 Rd1 draw
5 Re1 draw
6 Rg4 draw
7 Rg5 draw
8 Rg7 draw
9 Rg8 draw
10 Kc6 loss in 2 half-moves
11 Kc7 loss in 2 half-moves
12 Kc8 loss in 2 half-moves
13 Kd6 loss in 2 half-moves
14 Kdd8 loss in 2 half-moves
15 Kde7 loss in 2 half-moves
16 Ke6 loss in 2 half-moves
17 Ked8 loss in 2 half-moves
18 Kee7 loss in 2 half-moves
19 Kf7 loss in 2 half-moves
20 Kf8 loss in 2 half-moves
21 Ra1 loss in 2 half-moves
22 Rf1 loss in 2 half-moves
23 Rg2 loss in 2 half-moves
24 Rg3 loss in 2 half-moves
25 Rh1 loss in 2 half-moves