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EGTB: win in 4 half-moves

# move score
1 Rb8 win in 3 half-moves
2 Na7 draw
3 Nc3 draw
4 Nc7 draw
5 Nd6 draw
6 Rf8 draw
7 Rg5 draw
8 Rg6 draw
9 Rg7 draw
10 Rh8 draw
11 Na3 loss in 2 half-moves
12 Nd4 loss in 2 half-moves
13 Ra8 loss in 2 half-moves
14 Rc8 loss in 2 half-moves
15 Rd8 loss in 2 half-moves
16 Re8 loss in 2 half-moves
17 Rg1 loss in 2 half-moves
18 Rg2 loss in 2 half-moves
19 Rg3 loss in 2 half-moves
20 Rg4 loss in 2 half-moves