Winkler is running Mind-Benders for the Quarantined. After signing up to this free service, you receive a mathematical puzzle every Sunday, by email. You then get a subtle hint on Tuesday, a big hint on Thursday, and the solution on Saturday.
Winkler’s new book should be out around the end of 2020. While he already published wonderful book collections of mathematical puzzles in the past, this one is meant to be a special collection of the world’s top puzzles. For example, the new book would also include the best puzzles from Winkler’s past books.