Puzzle Archive

Solutions should be submitted to puzzles@invariants.org.uk no later than 14:59 BST on the Sunday after they are posted. Please quote your name, your institution, the week, and the numbers of the problems attempted in the subject line, e.g. Septus Quizonacci – University of Oxford – Week 7 – Problems 1,2,3.

Describe what the following pictures represent: Picture 1: Picture 2: 7. A thousand wires hang on a very high tower, so high that you cannot see what tip belongs with what bottom. This is something you are interested in knowing. You have a battery and a light bulb which will light up if two wires…