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Saturday Special: Anti-King Anti-Knight Killer Sudoku

h3lix — Sat, 26 Jun 2010 16:58:07 +0000

Anti-Chess Killer Sudoku contains a few hybrids, which combine multiple anti-chess variants. Here is a sample that is both Anti-King and Anti-Knight, meaning no two cells one king’s move OR one knight’s move away from each other can have the same value.

MEDIUM Version
INSANE Version

The answer to both versions is the same and is here

Saturday Special: Anti Bishop Killer Sudoku

h3lix — Sat, 12 Jun 2010 14:17:27 +0000

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

This puzzle is another Anti-Bishop. There are several diagonals lightly drawn on the grid along which numbers may not repeat. This puzzle comes in 2 versions:

HARD version
INSANE version

The solution for both versions is the same and is here.

Saturday Special: Anti-King Killer Sudoku

h3lix — Sat, 29 May 2010 20:10:01 +0000

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.

Saturday Special: Anti-Bishop Killer Sudoku

h3lix — Sat, 22 May 2010 16:38:01 +0000

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.

Saturday Special: Anti-Knight Killer Sudoku

h3lix — Sat, 08 May 2010 22:25:34 +0000

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.

The Washington Post restarts with my Samurai Sudokus!

djape — Fri, 05 Feb 2010 08:03:15 +0000

Good news folks!

The Washington Post have decided to restart printing my Samurai Sudoku puzzles in their Comics section of the Sunday issue… thanks to YOU! Apparently the readers have been clamoring for the return of Samurais and the editors had no other choice but to change their minds only a month after they decided to stop.

This makes me really proud and I don’t know how to thank you folks.

I’m still uncertain when precisely will the first puzzle be printed, but I think it will be 10 days from now, on Sunday, February 14. Stay tuned for confirmation of this.

UPDATE: I just found out that The Washington Post will restart with my Samurais on Sunday, February 28, 2010!

My books @ Barnes & Noble! (discounted, too!)

djape — Sat, 09 Jan 2010 09:55:37 +0000

Barnes & Noble have started selling my books, so if any of you prefer to purchase from them, go ahead! They are even giving some really good discounts (30%+) on some of the books and at least 10% on all of them, so it’s worth going for!

Just click on the Barnes&Noble image to the right:

Outside Sudoku

djape — Mon, 04 Jan 2010 09:57:17 +0000

Here is something new (for this site) for the New Year: Outside Sudoku. This puzzle is also shown today on the Daily Sudoku page, but I thought I should properly introduce it.

The rules:
1. For the 9×9 grid all standard Sudoku rules apply. However, you don’t have any starting clues in there!
2. The clues are given outside the grid. 0, 1, 2 or 3 numbers are shown.
3. These clues tell you which numbers appear in the 3 closest cells in the grid, IN ANY ORDER (not necessarily in the order they are given in). In other words, the clues for a row tell you which numbers appear in the corresponding row and the closest nonet (3×3 box). Same for columns.

I hope you will like it. I might start including them on the Daily Sudoku page, of course in some variant version (the non-consecutive type looks particularly interesting).