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EGTB: win in 4 half-moves

# move score
1 Rb2 win in 3 half-moves
2 Nb6 draw
3 Nc5 draw
4 Ra8 draw
5 Rb3 draw
6 Rb4 draw
7 Rb5 draw
8 Rb6 draw
9 Rc8 draw
10 Re8 draw
11 Rg8 draw
12 Nb2 loss in 2 half-moves
13 Nc3 loss in 2 half-moves
14 Rb1 loss in 2 half-moves
15 Rb7 loss in 2 half-moves
16 Rd8 loss in 2 half-moves
17 Rh8 loss in 2 half-moves
18 Rf8 loss in 1 half-moves