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EGTB: win in 4 half-moves

# move score
1 Rg7 win in 3 half-moves
2 Ra7 draw
3 Rb7 draw
4 Rc2 draw
5 Rc4 draw
6 Rc5 draw
7 Rc6 draw
8 Rf7 draw
9 Rh7 draw
10 K5g5 loss in 2 half-moves
11 K5g6 loss in 2 half-moves
12 K6g5 loss in 2 half-moves
13 K6g6 loss in 2 half-moves
14 Kg4 loss in 2 half-moves
15 Kg7 loss in 2 half-moves
16 Kh4 loss in 2 half-moves
17 Kh7 loss in 2 half-moves
18 Rc1 loss in 2 half-moves
19 Rc3 loss in 2 half-moves
20 Rc8 loss in 2 half-moves
21 Rd7 loss in 2 half-moves
22 Re7 loss in 2 half-moves