The solution was:
=IIF((Count(Fields!Title.Value, "SSC1") < 1 AND RowNumber("SSC1") = 0) OR
(Count(Fields!Title.Value, "SSC1") < 2 AND RowNumber("SSC1") = 1) OR
(Count(Fields!Title.Value, "SSC1") < 3 AND RowNumber("SSC1") = 2), false, true)
This would make this row visible if the dataset returned less than 3 rows.