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EGTB: win in 4 half-moves

# move score
1 Rb4 win in 3 half-moves
2 Ra3 draw
3 Rb6 draw
4 Rb7 draw
5 Rb8 draw
6 Na2 loss in 2 half-moves
7 Na4 loss in 2 half-moves
8 Nb1 loss in 2 half-moves
9 Nb5 loss in 2 half-moves
10 Nd1 loss in 2 half-moves
11 Nd5 loss in 2 half-moves
12 Ne2 loss in 2 half-moves
13 Ne4 loss in 2 half-moves
14 Rb1 loss in 2 half-moves
15 Rb2 loss in 2 half-moves
16 Rb5 loss in 2 half-moves