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EGTB: win in 4 half-moves

# move score
1 Rg3 win in 3 half-moves
2 Rc4 draw
3 Rc5 draw
4 Rc6 draw
5 Rc8 draw
6 Rd3 draw
7 Re3 draw
8 Rf3 draw
9 K2g2 loss in 2 half-moves
10 K2g3 loss in 2 half-moves
11 K3g2 loss in 2 half-moves
12 K3g3 loss in 2 half-moves
13 Kg1 loss in 2 half-moves
14 Kg4 loss in 2 half-moves
15 Kh1 loss in 2 half-moves
16 Kh4 loss in 2 half-moves
17 Ra3 loss in 2 half-moves
18 Rb3 loss in 2 half-moves
19 Rc1 loss in 2 half-moves
20 Rc2 loss in 2 half-moves
21 Rc7 loss in 2 half-moves