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Category Archives: Killer Sudoku
Cage Splitting – Killer Sudoku
Ok, here is the explanation of the “Cage/fence splitting” solving technique for Killer Sudoku puzzles that I promised before. I will use the puzzle posted on Friday, October 7 and solve it step by step using this method. We extend the idea of the “innies” and “outies” solving technique, except that you’re not looking for […]
Also posted in Solving tips
Tagged Cage Splitting, innie, INNIES, innies and outies, IQ, killer, killer sudoku, outie, OUTIES, rule of 45, sample puzzle, solving technique, technique
2 Responses
Two very cool puzzles today!
I’ve posted two very beautiful puzzles today. Killer Sudoku: This one might look very difficult but after a tough first step, the solution unfolds really easy. This is at least how I got the solution :), there could be a simpler one. Anyhow, I will use this one to explain the technique that I call […]
Also posted in Solving tips
Tagged COOL, Diagonal Sudoku, EASY, IQ, killer, killer sudoku, Sudoku Variant, technique, variant
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Killer Sudoku – September 27th
Many people have asked about the Killer Sudoku posted on September 27th. I haven’t tried to solve this Killer by hand but it is very much possible that it requires either a lot of math (the technique that I call “cage/fence splitting”, which will be explained in the next few days) or that it cannot […]
Also posted in General, Solving tips
Tagged IQ, killer, killer sudoku, Killer Sudokus, technique
12 Responses
Site statistics
I can proudly announce that in the past 24hrs there have been 400 unique visitors to my website and more than 2200 page views. The number of unique visitors has quadrupled in just one week. For some these might be modest figures, but considering how long has this site been online and most importantly keeping […]
Blank Grids
Update October 4: I noticed that the samurai blank grid might have been a bit too big to print, so I uploaded a slightly smaller version. — I just figured that you might need some blank grids to print out so you could use them when you work on these puzzles. So here they are, […]
Also posted in General, Solving tips
Tagged Classic Sudoku, Diagonal Sudoku, killer, killer sudoku, PNG, samurai, sudoku x
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More daily puzzles
In addition to today’s 3×3 Killer Sudoku that you are already used to seeing here, I’ve posted another puzzle on the Daily Sudoku variants Puzzles page. It’s a standard Sudoku, although not a classic 3×3 but rather a 2×5 variation. All 10 digits are used (0-9) so it should be slightly more difficult than the […]
Also posted in Sudoku Variants
Tagged Daily Sudoku, Daily Sudoku Variants, killer, killer sudoku, Perfect Sudoku, rules, standard sudoku, Sudoku Variant, Sudoku Variants, variant
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4×2 Killer Sudoku!
Today’s puzzle is not the ordinary 3×3 Killer Sudoku, but rather it’s a 4×2 variant. All rules remain the same, except that there are now only 8 digits used (1-8). NOTE:Since only 8 digits are used, the sum of all boxes, rows and columns is 36! Be careful when you look for “innies” and “outies”! […]
Posted in Killer Sudoku
Tagged innie, INNIES, innies and outies, killer, killer sudoku, NOTE, outie, OUTIES, rules, variant
1 Response
Weekend special!
I’ve prepared something special for Saturday’s puzzle, for two reasons: it’s a weekend and also it’s October 1 and I want to start with something brand new in October! It’s another variation of Killer Sudoku’s that I have never seen before. If you have – please let me know. And don’t worry, it’s not going […]
Today’s puzzle – Killer Sudoku X (diagonal)
As promised, today I’m posting something that I haven’t seen anywhere on the web – a diagonal Samunamupure. As far as I know it’s a world premier of this kind of puzzle – and you have the privilege to be the first to solve such puzzle! The rules are still the same – all cages […]
The Rule of 45 of Killer Sudoku (innies and outies)
This tip is probably the most important solving technique of Killer Sudoku, one that will save you a lot of time. It does involve some math, but very simple one. Basically, the whole story is that you have to bear in mind that 1+2+3+4+5+6+7+8+9 = 45. Very smart, huh? Well, maybe not so, but it’s […]
Also posted in Solving tips
Tagged innie, INNIES, innies and outies, IQ, killer, killer sudoku, Killer Sudokus, outie, OUTIES, rule of 45, solving technique, technique
3 Responses
