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EGTB: win in 4 half-moves

# move score
1 Rg7 win in 3 half-moves
2 Rg8 win in 3 half-moves
3 Ra1 draw
4 Rb1 draw
5 Re1 draw
6 Rg4 draw
7 Rg5 draw
8 Rg6 draw
9 Ka6 loss in 2 half-moves
10 Kaa7 loss in 2 half-moves
11 Kab8 loss in 2 half-moves
12 Kb6 loss in 2 half-moves
13 Kba7 loss in 2 half-moves
14 Kbb8 loss in 2 half-moves
15 Kc6 loss in 2 half-moves
16 Kc7 loss in 2 half-moves
17 Kc8 loss in 2 half-moves
18 Rc1 loss in 2 half-moves
19 Rd1 loss in 2 half-moves
20 Rf1 loss in 2 half-moves
21 Rg2 loss in 2 half-moves
22 Rg3 loss in 2 half-moves
23 Rh1 loss in 2 half-moves