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EGTB: win in 4 half-moves

# move score
1 Rb5 win in 3 half-moves
2 Nf3 draw
3 Nh3 draw
4 Ra8 draw
5 Rb6 draw
6 Rb7 draw
7 Rc8 draw
8 Ne2 loss in 2 half-moves
9 Rb1 loss in 2 half-moves
10 Rb2 loss in 2 half-moves
11 Rb3 loss in 2 half-moves
12 Rb4 loss in 2 half-moves
13 Rd8 loss in 2 half-moves
14 Re8 loss in 2 half-moves
15 Rf8 loss in 2 half-moves
16 Rg8 loss in 2 half-moves
17 Rh8 loss in 2 half-moves