Three Little Pigs by Anne Ogborn 2019-10-07T21:38:52Z
Hi kuviman. Yes you can only draw lines. The checking happens when you stop drawing (a pause of 2 seconds I believe). If your beautiful drawing is deleted that's because it's not good enough to be a house for the little piggy. Have you tried tracing the example house? That'll give you an idea of how to draw them and a piggy house should then appear. And yes, Prolog, Snap and CHR is complete magic!