[sungam]

Thanks, I am pleased you found it useful. This is exactly how a dermatologist learns to recognise skin cancer - by making decisions and then getting feedback. I think anyone can improve dramatically with an hour or so of practice and then this skill is useful lifelong.

[dhruvbird]

I wonder if most people get the same things wrong. I checked your other comments and noticed that there is no server side component. In case you add one, I would be really interested in knowing which ones are most confused, and in which direction.

[sungam]

Yes I could add this quite easily - will do in the next version