The most fun problems for beginners and experts alike: 20×20, 25×25, and 30×30 sizes!
We carefully select and verify problems that can be solved purely through logic, without guessing or guessing!
If you solve 100 problems, including the ones on the back cover, you are already a nonogram master!

Welcome to Nonogram, where logic and art meet!

Nonograms are picture puzzles that originated in Japan and are loved by people all over the world.
In Korea, it is more commonly known as 'Nemo Logic' or 'Nemo Logic'.
The process of completing the hidden picture using number clues will provide a deep sense of immersion and interest that goes beyond simple play.
This book is your guide to the fascinating world of nonograms.

The biggest feature of nonograms is that the ‘numbers’ and ‘pictures’ are in perfect harmony.
The numbers presented in the horizontal and vertical rows indicate the number of squares that must be filled in consecutively in that row. Players analyze these numbers and logically infer which squares are empty and which squares need to be filled in order to complete the picture.
In particular, marking cells that are sure to be unfilled is a very important step in solving the puzzle, not just simply filling in the cells.
For example, logical thinking is required, such as leaving blank the areas around already-confirmed and colored cells, or leaving the remaining cells blank if the sum of the numbers matches.
The difficulty level can be adjusted depending on the size of the puzzle and the arrangement of numbers, so everyone from beginners to experienced puzzle enthusiasts can enjoy the game at a level that suits them.

The benefits to be gained from this intellectual pastime are truly numerous.
The repetitive practice of analyzing numbers and inferring blanks and filled spaces while solving nonograms will greatly improve your logical thinking and problem-solving skills.
Additionally, the process of considering multiple possibilities simultaneously and finding the optimal path is highly effective in developing 'simultaneous computational ability' and concentration.
Just like a detective piecing together clues to unravel a case, the thrill of accomplishment you feel as the hidden picture slowly reveals itself is a reward beyond compare.

Nonograms are more than just a time-wasting hobby; they're a wonderful activity that stimulates our brains and provides mental fulfillment.
Through this book, I hope you all will immerse yourself in the deep and entertaining world of nonograms, and enjoy the vitality and intellectual joy of everyday life.