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EGTB: win in 4 half-moves

# move score
1 Rg2 win in 3 half-moves
2 R2b3 draw
3 R4b3 draw
4 Ra2 draw
5 Ra4 draw
6 Rb1 draw
7 Rb5 draw
8 Rg4 draw
9 Rb6 loss in 2 half-moves
10 Rb7 loss in 2 half-moves
11 Rb8 loss in 2 half-moves
12 Rc2 loss in 2 half-moves
13 Rc4 loss in 2 half-moves
14 Rd2 loss in 2 half-moves
15 Rd4 loss in 2 half-moves
16 Re2 loss in 2 half-moves
17 Re4 loss in 2 half-moves
18 Rf2 loss in 2 half-moves
19 Rf4 loss in 2 half-moves
20 Rh2 loss in 2 half-moves
21 Rh4 loss in 2 half-moves