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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 Rd2 draw
4 Re2 draw
5 Rf2 draw
6 Rg3 draw
7 Rg4 draw
8 Rg5 draw
9 Rg6 draw
10 Rh2 draw
11 Ka7 loss in 2 half-moves
12 Ka8 loss in 2 half-moves
13 Kbb7 loss in 2 half-moves
14 Kbc7 loss in 2 half-moves
15 Kcb7 loss in 2 half-moves
16 Kcc7 loss in 2 half-moves
17 Kd7 loss in 2 half-moves
18 Kd8 loss in 2 half-moves
19 Ra2 loss in 2 half-moves
20 Rb2 loss in 2 half-moves
21 Rc2 loss in 2 half-moves
22 Rg1 loss in 2 half-moves