beanz Magazine

Bakuro Binary Number Puzzles

mikecogh on Flickr

Bakuro puzzles are a fun way to learn about binary numbers and how to calculate their values.

Bakuro puzzles are like Sudoku puzzles with binary numbers to determine what value to place in empty puzzle squares. It’s a fun way to learn about binary numbers and solve complex puzzles.

Bakuro puzzles are Kakuro puzzles that use binary numbers. Paul Curzon at, with support from Google, has created a set of Bakuro puzzles plus blank forms to create your own. This article describes the basics of Bakuro with links at the bottom to explore more, including Kakuro puzzles.

What are Binary Numbers?

If you don’t know, in their simplest form, binary numbers use a 1 or 0 to indicate a number value based on their location in a string of binary numbers. Each position in the binary number string — counting from right to left — has a number value of 1, 2, 4, 8, 16, and so on. The position of each 1 in the string is used to add up the value of the binary number.

Here’s an example with a 5-digit binary number:


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