Picture Logic - a colorful Sudoku type puzzle

Test levels If you have not yet played through the game's test levels, you can access them by pressing the "?" button on the front page of the game.

Game interface Overview of the game interface

1: Active hints(active hints are white, gray hints have been found) 2: Toggle button(toggles between placing tiles and checkmarks, alternatively you can use left and right mouse clicks) 3: Color picker(choose which color/layer you want to work on) 4: Checkmarks(all rows and columns with a gray number can be checked) 5: Placed tiles(in this case they are black and blue from other color layers)

Hints The hints you see to the left of the game area tell you where to place the color tiles. The order of the numbers in each row/column tells you the order of the tiles on the board. It's a smart strategy to start with the rows that have large numbers and fill them in first.

Checkboxes You check the boxes by right-clicking or using the tick/check button. Checking the boxes that you know are empty is the absolute best tool to make the game easier for yourself. Every time you check one layer, you make all the other rows and columns on that layer easier, as you no longer have to think about whether the pieces can be placed there.

If a row/column has a "0" next to it, it means that there should be no pieces and the entire row/column can therefore be checked.

When you have found the pieces that should be in a row/column, your hints turn gray. This means that there are no more pieces to find, so you can check the remaining boxes in the row/column.

Color change Most courses have several colors and you can switch freely between these color layers to find an easy place to start and fill in more and more of the course. The course may not always start with the color that is smartest to start with.

Difficulty levels In the green category you will find the small and easy courses, the orange ones get a little bigger and take longer. The largest and most difficult courses are in the red category, the courses in this category often take the longest.

Right-click If you play via touch (iPad, tablet or smartphone) you usually right-click using two fingers instead of one. If this doesn't work so well, you can use the button to toggle between tiles/checkboxes. If you are playing on a Mac and your mouse only has one button, you can hold down the "Apple key" while clicking.

Hot or Not This section shows you three random user courses of approximately the same size, and you have to choose the course you would like to play. We count your votes and everyone else's votes together. The courses that have received a lot of votes have a higher chance of being selected for release. If a course is offensive or contains inappropriate material, you can report it via the "!" button.

Course Builder Guide

When you build your own courses in Picture Logic Color, it will be playable by all your friends and everyone can see and vote on it in the Hot or Not section.
To give you a better chance of getting tracks selected for books, you can lean on this little guide.

Examples of good and not so good tracks: Remember that these are only recommendations on what makes a good track. You should draw whatever you want, but this guide can help you increase the chances of your track being selected for publication.

Small tracks can be just as good as big ones!

Think about whether your subject needs to be big, many tracks can be just as beautiful and are often easier if they are small, especially if the big tracks do not utilize the space.

Watch out for wasted space!

Try to avoid having too much wasted space around your subject. Maybe your subject lends itself to a smaller size. Small courses are quicker and easier to solve, and small courses can be just as beautiful as a big one.

A course will be better and more fun to play if it looks like something concrete, and not too abstract or just a pattern.

Be different!

It's always a bit more fun to make a course that stands out from the crowd and doesn't look like what everyone else is doing. So try to avoid numbers, letters, hearts, sun, cats and the like. Try to give your track a little twist of something different. Most people often choose to paint the same motifs, so stand out if you can.

Sudoku history

The history of Sudoku dates back to the 18th century in Switzerland, although the game did not gain wide popularity until the late 20th century in Japan.

In the 18th century, a type of puzzle called "Latin Squares" was developed where numbers were placed in such a way that each number appeared only once in each row and column. This formed the basis for later developments of Sudoku.

However, the modern form of Sudoku that we know today was first introduced in Japan in 1984 by a puzzle manufacturer named Nikoli. It quickly became popular in Japan under the name "Sūji wa dokushin ni kagiru", which translates to "the numbers can only appear once". It wasn't until 1986 that the puzzle became known as Sudoku.

The Japanese magazine Monthly Nikolis started publishing Sudoku puzzles and the game quickly caught the attention of Japanese puzzle enthusiasts. Sudoku became a sensation in Japan during the 1990s and soon became a staple in many newspapers and magazines.

In 1997, Sudoku gained international attention when the British newspaper The Times decided to publish the puzzle in their daily newsprint. This was the start of Sudoku's global popularity. Soon, newspapers and puzzle publishers around the world began including Sudoku in their publications.

General about Sudoku

Sudoku is a logical and challenging puzzle known for its grid structure and number placements. It is a popular activity that challenges players to solve complex puzzles and think strategically.

Sudoku consists of a 9x9 grid that is divided into nine smaller 3x3 squares called blocks. Some of the squares in the grid are already filled with numbers between 1 and 9, while other squares are empty and need to be filled in.

The goal of Sudoku is to fill in the empty squares with numbers between 1 and 9 so that each number appears only once in each row, column and block. This means that each row, column and block must contain all the numbers from 1 to 9 without repetition.

The game usually begins with a partially filled grid and it is up to the player to use logic and elimination to find the correct numbers to complete the puzzle. The player can start by analyzing rows, columns and blocks to determine which numbers are already present and which are missing.

Throughout the process of filling in the numbers in the grid, the player must take into account the rules and limitations of Sudoku. It requires deduction, pattern recognition and patience to solve the puzzle correctly.

Sudoku is known to be a game without the need for math skills or special knowledge. It's more about logic and problem solving. It is a game that can be enjoyed by players of all ages and skill levels.

Sudoku is available in different difficulty levels ranging from easy to extremely difficult. There are also different sizes of grids, such as 4x4 or 6x6, providing variety and challenges for players who want to experiment with different levels of complexity.

Sudoku is not only a fun and challenging pastime, but it has also been recognized as a game that helps develop logical thinking, concentration and problem-solving skills. It is one of the most popular puzzles in the world and can be found in newspapers, magazines and online platforms.

Whether played as a relaxing activity at home or as a competition between friends, Sudoku is an engaging and thought-provoking way to test and improve your mental skills.