Question 1

How to create a sudoku with custom images

Accepted Answer

This quick tutorial shows you how you can use custom images for your Sudoku puzzles. You will need Sudoku 9x9 creative, or the equivalent for the size of puzzle you are working with.

Adding your custom images

It's actually very easy to add your own images. You do need to make sure you have the appropriate amount of images ready, but adding them is not too difficult.

First, go to the Symbol Options tab in the sudoku.

https://malcolm-en-gb.s3.eu-west-1.amazonaws.com/instances/wuGqS3zSeN/resources/1Owe7lqUOe/Sudoku%20custom%20images.jpg (Sudoku custom images)

Next, you'll see the Symbol Settings option. You can change between 1-9, A-I, Roman Numerals I-IX, Symbols, or Hexadecimal.

For what we're going to do today, select the Symbols option. Immediately you'll see 9 standard images appear, looking like the side of dice. These are the standard images that come with the software.

If you want your own images here, click on the magnifying glass just below the pictures, and a popup screen will appear.

https://malcolm-en-gb.s3.eu-west-1.amazonaws.com/instances/wuGqS3zSeN/resources/hbmpCvVQr7/Sudoku%20Select%20Images.jpg (Sudoku Select Images)

If you click on one of the white squares, windows explorer will open a new window, and you can search for the folder where you keep the images you want to use. Remember that because it's a sudoku, simplistic images work better. You also don't want images that look too similar, as that will cause confusion. You can either manually select each picture by clicking on the next square and selecting a singular image, or you can select multiple images at once.

Now if you click next preview, the sudoku will generate with the images you have selected. Beware that if you have "Show Solution" on, there is no difference between the hints and the solution to show which squares are part of the solution and which ones aren't.

https://malcolm-en-gb.s3.eu-west-1.amazonaws.com/instances/wuGqS3zSeN/resources/3ymHfDPyI2/Sudoku%20with%20custom%20images.jpg (Sudoku with custom images)

This same technique will work for several other modules as well.

Solving image sudokus

To solve a sduoku, you need to write the correct symbols in the empty squares. For regular (number) or letter sudokus that's not too hard. For harder sudokus, level 5 and up, it's also common to pencil in the optional values for each square. E.g. if you know that a square can contain only the 3, 5 and 6, you can write these in the square, but very small, as a reminder when solving other squares. (This is the only way to find hidden doubles or triples).

There are two ways to create image sudokus that are still fun to solve:

Choose symbols that are easy to draw / copy, just like the symbols in the example in the previous paragraph. Simple line art or icon style graphics, or images with a single dominant color (e.g. the person with the green hat). Even then, image sudokus with difficulty levels 6 and 7 will be really hard to solve;
Use the image sudokus as attractive magnets on social media. It's best to use the easier variations, circle one of the squares, and add a text like "which color hat has the person in this square?".

Creating a custom background

Another way to add images to your sudoku puzzle is to add a singular image to the background. This could be done as a watermark, or if you have a themed puzzle book, it could be nice to have the theme shine through in the puzzle.

For this option, we go to Output Settings all the way at the top.

https://malcolm-en-gb.s3.eu-west-1.amazonaws.com/instances/wuGqS3zSeN/resources/8W4RZxWpFi/Background%20image%20sudoku.jpg (Background image sudoku)

Next, select "Background Images".

Turn on the "Use Background Image(s)" checkbox, and select one or more files. Then, generate the next preview, and you'll see the image you used.

https://malcolm-en-gb.s3.eu-west-1.amazonaws.com/instances/wuGqS3zSeN/resources/ZtF66zH7rO/background%20image%20sudoku%20done.jpg (background image sudoku done)

We've also set the transparency on the background image to around 60-70%, because otherwise the black lines will make the numbers of the puzzle invisible.

Choosing Background Images

You can find the Background Images setup on the "Output Settings" tab, then look for the "Background Images" tab.

https://malcolm-en-gb.s3.eu-west-1.amazonaws.com/instances/wuGqS3zSeN/resources/hoFkzwiNiV/Background%20Images%20Overview.png (Background Images Overview)

Click "Select Files" to select one or more files on your computer. Click "Clear List" to start over. A list of selected images be shown at the right
If the image is too large or too small for your puzzle size, you can choose to Zoom the image to a fitting size
If the image does not have the same proportions (relative width and height) as the puzzle size, you can change the alignment settings as well
Set the transparency for the image

The result can look like this:

https://malcolm-en-gb.s3.eu-west-1.amazonaws.com/instances/wuGqS3zSeN/resources/97i6pargNi/Background%20Image%20Zoom%20Gray.png (Background Image Zoom Gray)

Puzzle Settings

Depending on the puzzle type, you may need to change the color settings. For example, with Mazes, if you have set a fill color (or floor color) for the cells or squares, these will print over the background image. Set these fill colors to Transparent to show the background images.

Zoom and Alignment

If the image is larger or has different proportions than your puzzle type, you may need to check the Zoom option.

For example, if the result looks like this:

https://malcolm-en-gb.s3.eu-west-1.amazonaws.com/instances/wuGqS3zSeN/resources/OJl9T5mNTo/Background%20Image%20No%20Zoom%20Black.png (Background Image No Zoom Black)

For abstract images it may be fine to show only a part of the image though (that's why the Zoom is an option)

If the image has different proportions than the puzzle, for example the puzzle is 1000x1000 pixels and the image is 1500x500, you can use the alignment options to choose where the image will be printed.

Transparency

With the transparency option, you can use colorful or black images and make them look a bit softer. For example, an image like this would ruin the puzzle, because you cannot write numbers in the squares that are completely black.

https://malcolm-en-gb.s3.eu-west-1.amazonaws.com/instances/wuGqS3zSeN/resources/OfFWGCfPnz/Background%20Image%20Zoom%20Black.png (Background Image Zoom Black)

By making the image more transparent (e.g. 70-80% transparent), it creates the illusion of a shadow, creating a better looking puzzle:

How to create a sudoku with custom images

How to add background images to my puzzles in Puzzle Maker Pro?

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