The Home of Perfect Sudoku and other puzzles
Well, folks, it’s been more than one year since I started posting puzzles on this website and I’d like to write a few words about that. Actually, since this site has become popular thanks to Killer Sudoku puzzles I intended…
Someone 😉 complained and asked for more new variants and specifically for cons/non-cons puzzles. So here it is – first ever Consecutive Butterfly (4 in 1) Sudoku puzzle. “Pipes” (“|” symbols) between cells mean that those cells must contain consecutive…
To be honest, I haven’t kept track of all the different sudoku variants that I have posted and which ones I never posted, but I think that this is the first Consecutive TwoDoku X sudoku puzzle ever. I will check…
Since the focus is now on Samurai Sudoku puzzles ;), I’d like to introduce yet another variant of this overlapping 5-in-1 Sudoku puzzles: Consecutive Samurai Sudoku! As far as I know, this is one of a kind puzzle – if…
Yet another Sudoku puzzle variation – it’s somewhat similar to “greater/less than” puzzles but completely new solving methods are required to solve it. It is called Consecutive Sudoku, although I’ve seen it under the name “Disallowed Number Place”. You start…
A new brain teaser posted by Count Duko in the forum. Feel free to participate in solving this one by following this thread. Sound Charades is a game played on BBC Radio 4’s “I’m Sorry I haven’t a clue” in…
Weekend Special: Butterfly Samurai Killer Sudoku with diagonally adjacent cells! This puzzle consists of 20 (twenty) 9×9 Sudoku sub-puzzles. There are 5 groups of 4 puzzles. Each group of 4 is arranged Butterfly-style, and those 5 groups are arranged Samurai-style.…
I just uploaded an INSANE Killer puzzle to Daily Killer page. Not only that it has the highest difficulty ranking, but it’s also fully symmetrical, just like yesterday’s BRAIN puzzle. Normally, Sudoku Killer puzzles have “rotational” (or diagonal) symmetry, but…
Diagonal Samurai Sudoku X for New Year’s Day – this is the only place you can find these kind of Sudoku puzzles! Warning: Today’s puzzle is the MOST difficult Samurai X yet! Basically, not only do you have to fight…
Lets formalize the technique that can be used when solving overlapping puzzles, which I have been referring to as “the new solving technique” and that I now call Twin Nonets. Basically, this technique is a sub-technique (or if you like…