DJ Ape .Net – The Home of Perfect Sudoku

Here is another Anti-King killer. No two cells one king’s move away from each other can have the same value. In other words, no diagonally adjacent cells can have the same value. Like last week’s Anti-Chess killer sample, this one comes in 3 difficulties:

BEGINNER version
HARD version
INSANE version

The solution to the easy version is here and the solution to the hard and insane versions is here.

Here’s another sample puzzle from Anti-Chess Killer Sudoku.

This puzzle is Anti-Bishop. There are several diagonals lightly drawn on the grid along which numbers may not repeat. This puzzle comes in 3 versions:

COOL version
BRAIN version
INSANE version

The solution for all three versions is the same and is here.

Here’s another Anti-Chess sample puzzle: this one’s a bit harder than the last one.

This one’s a HARD (4/5…BRAIN/IQ) Anti-King Killer
(this puzzle was originally classified insane, but is actually easier than the insane puzzles in the book)

Anti-King means that no two cells one king’s move move away from each other in chess can have the same value. In other words, in addition to the rules of regular sudoku, no diagonally adjacent cells can have the same value.

I have posted a visual walkthrough and solution for this puzzle on the forums here

the solution is here

It’s been quite a while since I last posted a CalcuDoku puzzle. I’m going to fix that now and to make it up to you, it will be a somewhat special variant of Square Wisdom puzzles.

It’s an overlapping, 2 in 1 (Gattai-2), CalcuDoku puzzle, which is essentially in a TwoDoku layout.

Remember the rules: there are no 3×3 nonets (nor any other kind of nonets). You only need to make sure that each row and each column contain one occurrence of each digit. And finally, unlike Killer Sudoku puzzles, in CalcuDoku puzzles numbers can be repeated in each cage!

Of course, if you need assistance with cage combinations, you can use the CalcuDoku calculator.

2 in 1 overlapping CalcuDoku for Wednesday, May 12, 2010 – Difficulty: IQ

Here’s my first new sample puzzle for the Anti-Chess Killer Sudoku book.

This one’s a MEDIUM (THINKER) Anti-Knight Killer

Anti-Knight means that no two cells one Knight‘s move away from each other in chess can have the same value.

Hey everybody!  It’s Dan (h3lix) from the forums.  I started a book project a couple of years ago before I went on hiatus and just now finished it!

This book contains 112 hand designed puzzles that explore the combination of Killer and Anti-Chess variants and range in difficulty from Beginner to Insane.  I will be posting new sample puzzles as Saturday Specials for the next few weeks.   The difficulty of the book is balanced more toward advanced solvers, but there are also instructions and tips for beginners.  Additionally, this book also features walkthroughs for some of the insane puzzles.

100% of proceeds from this book will go to Architecture for Humanity, a nonprofit organization that’s working to bring design and construction services where they are needed most.

Thank you djape, for graciously allowing me to announce this project on your site.