Chess Sudoku 4+

by Cracking the Cryptic

Nick Carney

Designed for iPad

    • $4.99



***** AUGUST UPDATE *****
15 new King puzzles, all 100 puzzles are out now!


Presented by Cracking The Cryptic, YouTube’s most popular Sudoku channel, comes a new game that connects two of the world’s biggest mind games: Chess and Sudoku!

How does Chess Sudoku work? Well we’ve taken the classic sudoku game everyone knows and loves and created puzzles with chess-related twists! There are three different types of puzzles in the game: Knight Sudoku; King Sudoku and Queen Sudoku.

In Knight Sudoku, in addition to the normal rules of sudoku (no repeated digit in a row/column/3x3 box) a digit must not appear a chess knight’s move away from itself. This simple extra restriction introduces lots of clever additional logic that makes the puzzle even more interesting!

King Sudoku and Queen Sudoku work the same way: ie it’s always normal sudoku but, in King Sudoku a digit must not be a single diagonal move away from itself; and, in Queen Sudoku, every 9 in the grid acts like a chess Queen and must not be in the same row/column/3x3 box OR diagonal of any other 9!

As with their other games (‘Classic Sudoku’ and ‘Sandwich Sudoku’), Simon Anthony and Mark Goodliffe (the hosts of Cracking The Cryptic) have personally crafted the hints for the puzzles. So you know that every puzzle has been play-tested by a human being to ensure that the sudoku is interesting and fun to solve.

In Cracking The Cryptic’s games, players start with zero stars and earn stars by solving puzzles. The more puzzles you solve, the more stars you earn and the more puzzles you get to play. Only the most dedicated (and cleverest) sudoku players will finish all the puzzles. Of course the difficulty is carefully calibrated to ensure lots of puzzles at every level (from easy through to extreme). Anyone familiar with their YouTube channel will know that Simon and Mark take pride in teaching to be better solvers and, with their games, they always craft the puzzles with the mindset of trying to help solvers improve their skills.

Mark and Simon have both represented the UK many times at the World Sudoku Championship and you can find more of their puzzles (and lots of others) on the internet’s biggest sudoku channel Cracking The Cryptic.

100 beautiful puzzles from the Knight, King and Queen variants
Hints crafted by Simon and Mark!

What’s New

Version 1.6

15 new King Sudoku puzzles, all 100 puzzles are out now!

Ratings and Reviews

4.9 out of 5
146 Ratings

146 Ratings

LIk3Aball3r ,

Such a good app!

This app is so much better than any other free sudoku app on the App Store. I was hesitant to buy it, but being a unique Chess variant sudoku and everything about the app being better, it’s definitely worth the money.

Some of the best things about the app are the different ways to note blocks with different colors or writing the numbers in the corner or center. I do wish their were more colors to choose from for more complex notations, but that’s not a huge deal. No other sudoku app even compares to the functionality of this app! It’s very well designed, and I hope that, with proper feedback, the app will continue to evolve and improve!

Asteroidfor2020 ,

Amazing App (and Amazing Channel)

This app is amazing. The rules are interesting. The puzzles are engaging. The creators are awesome. I’ve got hours of fun out of this, and for $5, it’s easily worth it.

If I had any feedback, it would be that I’d love more puzzles in the current categories, especially more difficult ones. I love the challenge of the most difficult puzzles of the app, but crave more. (though to be fair I have yet to finish the Queen Puzzles, so perhaps I shouldn’t complain).

jwadamson ,

Pretty nice.

My critiques would be;

The number buttons are too small. It is awful when it enters the wrong digit and shows red, feels bad. My phone certainly isn’t the smallest supported model even. Could easily double the size of them by using staggered rows.

The entry modes weren’t really clear, and switching from notes to enter is awkward

Can’t select non adjacent cells easily for pencil notes. (Without at least three other taps to select separate cells and then return to normal mode)

The few hints used were pretty spot on. Generally helped me find where I forgot to clean a note that would have shown that I had the next step set up. That or naked cells sometimes can be tricky.

It can be awkward to refer to a hint and the board at once. I think the hint text should probably overlay just the controls so you can see your board still (bonus points for some sort of indicators for the relevant hint cells).

Honestly my biggest other wish was if all these variants were just IAP of a single app. I would pay the same, but they don’t seem that different that a single app couldn’t reasonably do it all.

App Privacy

The developer, Nick Carney, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

More By This Developer

Cracking the Cryptic
Classic Sudoku!
Miracle Sudoku
Killer Sudoku CTC
Thermo Sudoku
Sandwich Sudoku

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