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EGTB: win in 4 half-moves

# move score
1 Rg4 win in 3 half-moves
2 Rh4 win in 3 half-moves
3 Ra4 draw
4 Rb1 draw
5 Rb2 draw
6 Rb5 draw
7 Re4 draw
8 Rf4 draw
9 K7g7 loss in 2 half-moves
10 K7g8 loss in 2 half-moves
11 K8g7 loss in 2 half-moves
12 K8g8 loss in 2 half-moves
13 Kg6 loss in 2 half-moves
14 Kh6 loss in 2 half-moves
15 Rb3 loss in 2 half-moves
16 Rb6 loss in 2 half-moves
17 Rb7 loss in 2 half-moves
18 Rb8 loss in 2 half-moves
19 Rc4 loss in 2 half-moves
20 Rd4 loss in 2 half-moves