The idea is great, unfortunately they choose a cheap printing, different parts of the clues have different ink level and/or tone. Hard to follow.
At times different colors are so close is hard to distinguish.
Hope they make a new, better printing

I do have to agree with reviewer Andrea, I don't know what type of paper they printed these on, but it's obviously not a very high quality.

The issue I got in to was that I thought Crayola's erasable colored pencils might work well, but the paper would not hold the color well...and if you bear down too hard, even the erasable colored pencil won't come out!

My solution: I'm using Crayola's "Twistable" colored pencils and going very lightly over each square (the paper holds the color from them better, and as long as I go lightly, they erase just fine). So far, no major problems to report.

The first puzzle I finished was a bit of a disappointment - it was supposed to be a piranha, but was obviously more of a charicature...I was hoping for better quality puzzles and don't see any yet.

Interesting concept to put into print - colored pixel puzzles. The puzzles themselves are fun and interesting to do, and attractive. My big problem with them is seeing the numbers within the colored squares. Also, the closeness in value in the colors used sometimes makes it hard to tell one from another.

Over all, a good puzzle book. Just have a good light to work by!

The puzzles are great but the print quality is not. It rubs off if you try to erase anything and some of the clues are hard to read. I found it helpful to make a color copy of the puzzle and work on that instead of the book.

This is one of the best books of paint-by-number logic puzzles (also known as Nonograms, O'Ekaki, Hanjie, Griddlers, Paint-doku, Paint-A-Pix, CrossPix and numerous other names) I've run across...and I've tried quite a few. These are multi-color puzzles, which helps this book to stand out from the crowd. The puzzles represent a range of difficulties, but none are idiotically simple and none are impossible. The pictures are all nice, and some of them are gorgeous. For new solvers, there is a reasonable how-to introduction. The paper is high-quality and the wire binding makes it easy to use -- it lies perfectly flat. The only reason I can't give it 5 stars has to do with the color spectrum chosen, which in several ways is simply too broad. Few solvers will have a full range of writing implements in all the colors called for. Worse, some of the puzzles use up to four shades of the same basic color (i.e. pale, light, medium and dark), and there is enough variation in the printing process that it is hard to match up the colors in a few of the four-, five-, and six-or-more-color puzzles. Still, it is overall a terrific puzzle book and I look forward to more from these authors.