Big discounts on some books

Here we go, Amazon has gone crazy again with their promotions and I’m just passing on the information. GIFTBOOK17 promo code for $5 off First, of all, GIFTBOOK17 promo code which you apply on Amazon at checkout to get $5 OFF ANY BOOK is valid only for a few more hours, today November 26, 2017, until midnight, Pacific Time. Conditions apply.
Then, in addition to that promo code, Amazon have decided to give some really good discounts on the following books: These discounts could change at any time – in fact some of them have changed while I was typing this message to you! It must be something about Amazon’s crazy algorithms for discounts, it certainly isn’t me who does that.
This entry was posted in Kakuro, Killer Sudoku, Picross, Puzzle books, Samurai sudoku and tagged , . Bookmark the permalink. Post a comment or leave a trackback: Trackback URL.


  1. bill
    Posted February 1, 2020 at 5:18 pm | Permalink

    I have your puzzle book, “200 advanced sudoku puzzles”. I have come to the conclusion that you develop these puzzles by computer and also solve them by computer. I think I’m better than average at solving sudoku puzzles but when I get to the place where I have to use “trial error” method to find the correct sequence of numbers then I suspect you could not solve them either unless you use the computer program or guess, guess, guess!

    • Posted February 3, 2020 at 12:26 am | Permalink

      Hi Bill, thank you for your message.

      None of the puzzles in my books require trial and error to solve, with one exception and that is: INSANE KILLER SUDOKU (because, believe it or not, people have requested such puzzles). But this is not what you are referring to.

      I assure you that the puzzles in the book “Sudoku Medium – Hard: 200 advanced sudoku puzzles” do not require trial and error to solve. They actually do not even require some fancy sudoku solving techniques. All they require are naked/hidden singles, pairs, triplets and quads and row/column and box interactions.

      I suggest that if you find a puzzle you can’t solve, try using pencil marks. Jot down all the possible digits that could go into a cell and then start eliminating one by one.

      I am sure that this book is right for you. If you claim you are better than average sudoku solver, if you persist and learn new techniques, this will book will help you progress to an advanced level! 🙂


Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.

eXTReMe Tracker
%d bloggers like this: