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Tag Archives: IQ
Swordfish
As promised, I implemented the Swordfish classic Sudoku solving technique in my Perfect Sudoku software and generated a few puzzles. I just posted one of them on the Daily Sudoku page. However, I ran my generator and generated a couple of thousands Killer Sudokus and NONE of them required Swordfish, just as I speculated before. […]
Posted in Killer Sudoku, Solving tips
Also tagged Classic Sudoku, Daily Sudoku, killer, killer sudoku, Killer Sudokus, Perfect Sudoku, solving technique, sudoku solving technique, swordfish, technique, x-wing
8 Responses
Subtraction combo
Udosuk, one of our visitors who is most active in giving hints for the puzzles we post here, has made a suggestion for a new solving technique for Killer Puzzles. He calls it “subtraction combo”. I’m posting his explanation here (slightly modified): I’m proposing a trick which I think many players already knew, but I’ll […]
Posted in Solving tips
Also tagged calculator, killer, solving technique, subtraction combo, technique
3 Responses
Daily & Weekly Puzzles
Since it seems that this week’s brain X was a tricky one, today I didn’t post an INSANE puzzle, but rather just an IQ. It’s still quite difficult – maybe even more difficult than the brain X. I also posted a 4×4 classic Sudoku puzzle with another “shape” in it. It looks pretty I think. […]
Puzzle difficulty
First of all, I posted a Killer X puzzle rated THINKER for today. I would like to know how difficult you find this one. Regarding the INSANE puzzle posted on Friday – I see that there has been a lot of discussion regarding it’s difficulty and the difficulty of some other puzzles posted last week. […]
Posted in Killer Sudoku
Also tagged Cage Splitting, Classic Sudoku, Daily Killer, Daily Killer Sudoku, EASY, hidden subsets, innie, INNIES, INSANE, killer, killer sudoku, Killer Sudokus, outie, OUTIES, solving technique, SUBSETS, technique, THINKER
3 Responses
You Asked For It!
As promised, I just posted a puzzle with the rating that is currently in the lead in our poll. And that, apparently, is INSANE. This puzzle requires all Killer techniques + it requires some advanced classic Sudoku techniques (match subsets etc). It does not require trial and error! I hope someone will solve it without […]
Posted in Samurai sudoku, Solving tips
Also tagged Classic Sudoku, EASY, innie, INNIES, INSANE, killer, outie, OUTIES, samurai, SUBSETS, technique
12 Responses
Take it Easy
I realised that I’ve never posted an “Easy” Killer puzzle. So, in preparation for the weekend I just uploaded a new puzzle, rated Easy. By the way, which ever “difficulty” is in the lead tomorrow – I will post a puzzle with that rating. It look like it’s either going to be “IQ” or “Insane”. […]
Cool your brains!
According to the comments, a lot of people enjoyed the IQ Killer posted on Friday. It’s time to cool your brains off a little, with the today’s “COOL” puzzle. For those who haven’t had enough, I posted a really tough Diagonal classic Sudoku. We’re doing quite well on the top 50 Sudoku sites list. A […]
IQ Friday
First of all, I think that the download issues have been rectified. People aren’t complaining about downloading puzzles anymore, so I reckon it’s working fine for all of you. Also, I posted two puzzles just now. The Killer is rated “IQ”. It should be challenging but not terribly difficult. You should all solve it by […]
“COOL” for Monday
I just posted today’s puzzle – rated “cool”. Remember, this is on “easy, cool, thinker, brain, iq, insane” scale. The difficulty is shown in the image along with the numeric indication of the difficulty. So this number can be used to compare two puzzles that have same difficulty levels. Thanx to R.Spurgeon who was quick […]
Complex innies/outies
One of our visitors (Phyllis) asked about the puzzle posted on October 13. Now, this puzzle definitely doesn’t need any trial and error to be solved – in fact it’s only rated as “thinker”. However, it requires a technique that in the new version of Perfect Sudoku will be called “complex innies/outies”. It is basically […]
Posted in Free sample puzzles, Solving tips
Also tagged innie, INNIES, outie, OUTIES, Perfect Sudoku, solving tip, solving tips, standard sudoku, technique, THINKER
3 Responses
