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EGTB: win in 4 half-moves

# move score
1 Rb7 win in 3 half-moves
2 Ra6 draw
3 Rb8 draw
4 Rc7 draw
5 Rc8 draw
6 Rd7 draw
7 Rd8 draw
8 Rh7 draw
9 Rh8 draw
10 Nb2 loss in 2 half-moves
11 Nb6 loss in 2 half-moves
12 Nc3 loss in 2 half-moves
13 Nc5 loss in 2 half-moves
14 Ra5 loss in 2 half-moves
15 Re7 loss in 2 half-moves
16 Re8 loss in 2 half-moves
17 Rf7 loss in 2 half-moves
18 Rf8 loss in 2 half-moves
19 Rg7 loss in 2 half-moves
20 Rg8 loss in 2 half-moves