Wow, it’s been a while since I’ve posted here! I’ve been collecting some material for a book on computer-aided puzzle construction and publishing. I’ll get around to the book eventually, but some of the material probably has a relatively short shelf life, so I thought it would be good to put some of it in […]

NOTE: This post was edited Jan 2nd, to reflect a modification to the settings. If you are doing the interactive puzzles on the puzzle website, you have probably noticed that when you complete a puzzle, instead of getting a pithy quote, you get an illustration (often, but not always, of a hedgehog, sometimes a kitty […]

In the past month I’ve published four puzzle books, you can read about them here. It is no secret that the puzzles in my books are produced using computer software that I write. I’ve been writing such software for nearly twenty years. I’ve spent a lot of time working on that software, and I’m proud […]

When I was still going to CalArts in the early to mid 1980s, I parlayed my recently acquired BASIC programming skills (via a Timex Sinclair 1000) into a part time job at a little mom-and-pop company in Granada Hills. The company did chemical recycling. They would buy used or surplus chemicals, such as industrial solvents, […]

Over the course of the Pandemic, I’ve purchased a LOT of puzzle books, and I thought I’d review some of the better ones over the next few blog posts. First up is one of my favorites, Montague Island Mysteries by Wayne Schmittberger. I picked up this book because I’m a fan of old fashioned logic […]

Diabolical Two Not Touch is the latest addition to my Star Battle puzzle offerings on Amazon. My original Two Not Touch book series contains puzzles which start at the same difficulty as my puzzles in The New York Times and then get increasingly more difficult. The three new diabolical books start where the previous books […]

Starting Monday April 20th, 2020, Krazydad puzzles will appear in The New York Times, where they are being published in the print edition as Two Not Touch. This is part of a larger effort to expand the puzzle offerings in the Times to a full half-page, a much-needed resource in these challenging times. I have […]

The Alexa Game is a multiplayer game I made up in which the object is to correctly predict whether Alexa (or Siri or Google) can answer a question. Rules: Players take turns being the Interrogator. The Interrogator comes up with a question to ask Alexa, and makes a prediction as to whether Alexa will answer […]

Dearest Krazy Dad, I hope this message finds you well and that your new year is off to a wonderful start! I just made a small donation through PayPal and also wanted to write you a personal message. I was born and raised in the US and during my elementary school years in a “gifted” […]

I was recently talking to another puzzle maven, and the subject of how I measure the demand for specific logic puzzles came up. I’m interested in puzzle demand because it helps inform the choices I make when I add new puzzles to the website. It occurred to me that my methods may not be as […]