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EGTB: win in 4 half-moves

# move score
1 Rb8 win in 3 half-moves
2 f8=K draw
3 f8=N draw
4 Ra6 draw
5 Rb1 draw
6 Rb5 draw
7 Rb7 draw
8 Rd6 draw
9 Re6 draw
10 f8=B loss in 2 half-moves
11 f8=Q loss in 2 half-moves
12 f8=R loss in 2 half-moves
13 Rb2 loss in 2 half-moves
14 Rb3 loss in 2 half-moves
15 Rb4 loss in 2 half-moves
16 Rf6 loss in 2 half-moves
17 Rg6 loss in 2 half-moves
18 Rh6 loss in 2 half-moves
19 Rc6 loss in 1 half-moves