Note: quite important: the solutions to the 50 puzzles are printed in the last few pages, so if you don't need to or don't want to spoil the fun, don't take a peek.This style is quite different from anything else. It's not your typical color-by-number scheme. Each page has a grid on the right (or top) and left side (or bottom) that provide clues to the "solution" of the coloring puzzle, including the colors to be used and the coordinates for placing each color. Specifically, the vertical axis consists of rows labeled 1 through 40, while the horizontal axis consists of 30 columns labeled alphabetically from A to Z and a to d. The key (include Letter and Number) will indicate which color and coordinates to fill in. Such as Black: A05 mean you need fill black color in a square in column "A" and row "5" Note that when writing, for example, A02-A06, it means that the squares between these two squares should also be filled in, specifically, A02, A03, A04, A05, and A06. You can use the fill-in method, the dot fill-in method, or the cross-stitch method (filling as "X"). The coordinates are easy to follow, and it's fascinating to see the picture come to life as you "paint" the points by filling in the corresponding squares. Solve a puzzle while enjoying the vibrant picture, the way the images appear, and the properly placed square gaps that are neither too big nor too small.Re-note: and one more thing that is quite important: the solutions to the 50 puzzles are printed in the last few pages, so if you don't need to or don't want to spoil the fun, don't take a peek.Let's explore and enjoy it!