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EGTB: win in 4 half-moves

# move score
1 Rh8 win in 3 half-moves
2 g1=R draw
3 Ra1 draw
4 Ra2 draw
5 Ra3 draw
6 Ra4 draw
7 Rb8 draw
8 Rf8 draw
9 Rg8 draw
10 g1=B loss in 2 half-moves
11 g1=K loss in 2 half-moves
12 g1=N loss in 2 half-moves
13 g1=Q loss in 2 half-moves
14 Ra5 loss in 2 half-moves
15 Ra6 loss in 2 half-moves
16 Ra7 loss in 2 half-moves
17 Rc8 loss in 2 half-moves
18 Rd8 loss in 2 half-moves
19 Re8 loss in 2 half-moves