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Autofill Pencilmarks in Sudoku and kakuro for Desktop

Desktop Sudoku and Kakuro Now More Fun with Autofill Pencilmarks

April 28, 2021

Autofill pencilmarks, a new feature allowing automatic pencilmark management in Conceptis Sudoku and Kakuro for desktop, now make these puzzles more fun than ever. To use this feature refresh your browser and tap the Autofill pencilmarks button on...>>

Hashi as an Intro to Graph Theory

Hashi as an Intro to Graph Theory

September 21, 2016

I am a high school math teacher and have been playing Hashi by Conceptis for a long time. I first saw it in an issue of Games magazine several years ago. It was always the first thing I would go to when a new issue arrived in the mail. Then I...>>

Getting Happier and Smarter at The Same Time

Getting Happier and Smarter at The Same Time

June 13, 2013

I met my boyfriend only six months ago. Frankly speaking, I did not expect things to go so well between us. But, we fell in love with each other quickly and he soon became the one I think about every night before I go to sleep.>>

Picturesque Paint-doku

Picturesque Paint-doku by Sterling Publishing Co., United States

96 page 8.5x10 inch book containing 96 B&W Pic-a-Pix puzzles in very easy to very hard difficulty levels.>>

Puzzle names

Did you know Sudoku was originally named Number Place? Or that Kakuro was named Cross Sums? With hundreds of alternative names used by publishers around the world, finding the right puzzle you’re looking for is a puzzle in itself. We’ll be happy to...>>

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Fun With Puzzles

Lots of free puzzles including brainteaser, riddles, logic and math puzzles, odd one out, find the mistake, hidden objects and handmade Sudoku puzzles.>>

Jobs

We are looking for talented freelancer artists to create pixel-art pictures for our picture-logic puzzles.>>

FAQ

What is a Weekly package? Why do some puzzles show their solutions before starting to play? What are Conceptis Credits and how much do they actually cost? Find answers to these and many other frequently asked questions (FAQ).>>

Help

Get all the help you need to use and enjoy this website. Find out why it's good to join our community, where you can play puzzles on this website, how you can get support when stuck with a puzzle, how to play online or print to play with pencil and...>>

About

Conceptis Ltd. is the leading supplier of logic puzzles to printed and electronic gaming media all over the world. On average, more than 20 million Conceptis puzzles are solved each day in newspapers, magazines, books, online and on mobile platforms...>>