The web content consists of a collection of quant riddles, logic puzzles, and lateral puzzles. These puzzles are intended to help with job or university interviews, as well as to train the brain. The difficulty of each puzzle is indicated using a color-code system. The author also mentions that the puzzles are designed to teach problem-solving techniques. Additionally, the author notes that not all of the puzzles are original and some have been compiled from the internet and emails. The content does not appear to contain any controversial or surprising information.
https://puzzles.nigelcoldwell.co.uk/