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EGTB: win in 4 half-moves

# move score
1 Rg7 win in 3 half-moves
2 R5c6 draw
3 R7c6 draw
4 Ra6 draw
5 Ra8 draw
6 Rab7 draw
7 Rb5 draw
8 Rc4 draw
9 Rc8 draw
10 Rca5 draw
11 Rg5 draw
12 Rcb7 loss in 6 half-moves
13 Raa5 loss in 4 half-moves
14 Ra1 loss in 2 half-moves
15 Ra2 loss in 2 half-moves
16 Ra3 loss in 2 half-moves
17 Ra4 loss in 2 half-moves
18 Rc1 loss in 2 half-moves
19 Rc2 loss in 2 half-moves
20 Rc3 loss in 2 half-moves
21 Rd5 loss in 2 half-moves
22 Rd7 loss in 2 half-moves
23 Re5 loss in 2 half-moves
24 Re7 loss in 2 half-moves
25 Rf5 loss in 2 half-moves
26 Rf7 loss in 2 half-moves
27 Rh5 loss in 2 half-moves
28 Rh7 loss in 2 half-moves