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EGTB: win in 4 half-moves

# move score
1 Rf4 win in 3 half-moves
2 Ra1 draw
3 Ra5 draw
4 Ra7 draw
5 Rb4 draw
6 Rc4 draw
7 Rd4 draw
8 g1=B loss in 2 half-moves
9 g1=K loss in 2 half-moves
10 g1=N loss in 2 half-moves
11 g1=Q loss in 2 half-moves
12 g1=R loss in 2 half-moves
13 Ra2 loss in 2 half-moves
14 Ra3 loss in 2 half-moves
15 Ra6 loss in 2 half-moves
16 Ra8 loss in 2 half-moves
17 Re4 loss in 2 half-moves
18 Rg4 loss in 2 half-moves
19 Rh4 loss in 2 half-moves