CheX was invented by George Robertson, a 97 year old computer enthusiast. He developed a paper based version of the game over a two year period with the assistance of his son Glenn. George then developed an electronic version of the game on his desktop computer. It was later adapted for iOS devices by Laurie Davis.

CheX is a two person board game that involves strategically placing numbered tokens on a board. Like Sudoku, a number can only appear once in any row or column. Points are collected whenever a token is played, however points are only awarded when a row or column is completed by either player. All points collected by both players in a row or column containing a blocked cell are lost for scoring purposes.

The rules are simple but the strategies can become quite complex.

The basic game is available for free, but there are two additional capabilities available with an in-app purchase. You can purchase the ability to play against an automated opponent. You can also purchase the ability to play against an opponent using Game Center (iOS 5 or later).

What’s New

Version 1.5

This app has been updated by Apple to use the latest Apple signing certificate.

Compatible with iOS 8.

Ratings and Reviews

5.0 out of 5
1 Rating

1 Rating

mleenheer ,

Cool & Challenging

This is a pretty cool app - a good challenge and fun for 2 people

Yodawg123456789 ,


Very fun

Minimalist Wannabe ,

❤ This Game!

Like the sudoku, it's elegant in its simplicity but quite challenging strategy! The free version is great for 2 players. I bought the option of playing with Robbie the Robot and he's a worthy opponent.
Bravo Mr Robertson! Created the hash tag #CheX on twitter... You have to join us there. :o)

App Privacy

The developer, Laurie Davis, has not provided details about its privacy practices and handling of data to Apple.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Game Center

    Challenge friends and check leaderboards and achievements.

  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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