The Wine was written for Timaru MathsJam. At our first Jam, we attempted The Shout - the puzzle sheet produced by one of the MathsJam groups from around the world. We had fun - but failed to solve ANY problem (I think this is the only time this happened). The Wine was written for those times when we failed again!
I rarely have the answers - I try to find stuff that interests me, and that I am also able to work on. Sometimes the problems/puzzles/activities come from book I own, and the I might be able to find the answer!The puzzles come from a variety of sources - I hope that I have become better at crediting those, but in the earlier editions, please forgive me if you find a puzzle which you wrote, which I have failed to attribute.