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EGTB: win in 4 half-moves

# move score
1 Rg7 win in 3 half-moves
2 Kb8 draw
3 Ke8 draw
4 Ra2 draw
5 Re2 draw
6 Rf2 draw
7 Rg1 draw
8 Rg6 draw
9 Rg8 draw
10 Rh2 draw
11 Kb7 loss in 2 half-moves
12 Kcc7 loss in 2 half-moves
13 Kcd7 loss in 2 half-moves
14 Kdc7 loss in 2 half-moves
15 Kdd7 loss in 2 half-moves
16 Ke7 loss in 2 half-moves
17 Rb2 loss in 2 half-moves
18 Rc2 loss in 2 half-moves
19 Rd2 loss in 2 half-moves
20 Rg3 loss in 2 half-moves
21 Rg4 loss in 2 half-moves
22 Rg5 loss in 2 half-moves