1981 Release "Rubik's Cube Strategy Guide" https://rubikcube.jp/about/ 1981 "HERE'S THE SOLUTION... RUBIK'S CUBE" Rubik's Cube This is a used book, so it has overall yellowing. However, there are no folds, and it is very clean with very little dirt. This is being sold as a used item. (Please refrain from purchasing if you are sensitive to this.) This is an official strategy guide for the Rubik's Cube released in 1981. Information on the "1st All Japan Cubist Tournament" at the time is included. On the 9th and 10th photos, certified individuals (2730 people) from the Cubist Tournament are listed. This is the 3rd printing, so it is believed to have been added. (Although blurred in the photos, names and regions are listed.) I think this is a very rare strategy guide. Price negotiations are not accepted for items under 3000 yen. Please understand that I will not respond to comments. Please check the condition by looking at the photos. Everything in the photos is included. If you have any questions about the product, please contact me through the comments. I will respond to the best of my ability. Returns and cancellations are not accepted after purchase. (Please understand that this is a no-claims, no-returns sale.) This is a personal sale, so responses may be a little delayed. Thank you for your understanding.