The Home of Perfect Sudoku and other puzzles
Killer Sudoku and variants thereof, including Zero Killer, Killer Samurai Sudoku, Killer Flower Sudoku and more. Solving techniques for Killer Sudoku also explained here. Killer Sudoku books.
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…
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…
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…
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…
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…
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.…
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…
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…
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…
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…