I have a polygon which has features within it (inside it). It want to select these within features so that I can delete it. These are all in a single polygon layer.

I have tried QGIS's "Select by location" and GRASS GIS's v.select but I could not get the features that I wanted since the select features from and by comparing are the same layer.

In the image below I want to select the select me portions = 2 features only