Was me! Just saw your email, Paul. Had to dust down my compednet and remember how to get on the forum bit!
I am happy to try and extend once I remember how I actually wrote it. The server is playing up a bit due to another site being hosted on it that I’m trying to get off it, so let me know if it stops working.
Anyone who has exercises they would wish to make into tasks, get in touch.
Incidentally when I checked, it’s now had more than 500,000 queries run through it of which about 1/3 are correct :).