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EGTB: win in 4 half-moves

# move score
1 Rb4 win in 3 half-moves
2 Nb3 draw
3 Nf1 draw
4 Nf3 draw
5 Ra6 draw
6 Rb7 draw
7 Rb8 draw
8 Rh6 draw
9 Nb1 loss in 16 half-moves
10 Nc4 loss in 2 half-moves
11 Ne4 loss in 2 half-moves
12 Rb1 loss in 2 half-moves
13 Rb2 loss in 2 half-moves
14 Rb3 loss in 2 half-moves
15 Rb5 loss in 2 half-moves
16 Rc6 loss in 2 half-moves
17 Rd6 loss in 2 half-moves
18 Re6 loss in 2 half-moves
19 Rf6 loss in 2 half-moves
20 Rg6 loss in 2 half-moves