Tag Archives: outie

Weekly Kakuro (Cross Sums) #3

This puzzle requires you to use the “Innies/Outies” technique. I hope you are familiar with it. I might post an explanation of this technique soon. Rules: Solve the puzzle so that the numbers in every horizontal and vertical region add up to the sum indicated for that region. Numbers CAN NOT be repeated in any […]

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The Law of Leftovers (LOL)

I promised to explain this technique, which applies to Jigsaw Sudoku (aka irregular blocks) puzzles, a while ago, so it’s time to keep the promise. You can find the same technique explained on various other sites, too. This technique is somewhat similar to innies/outies which is used for solving Killer Sudoku puzzles, but there is […]

Posted in Jigsaw Sudoku, Killer Sudoku, Solving tips | Also tagged , , , , , , , , , , , , , , , , , , , | 3 Responses

Butterfly Killer Samurai

You knew this was coming – surely the largest Killer Sudoku puzzle ever! It’s a Butterfly Samurai Killer puzzle! It 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. Please make sure you understand how the […]

Posted in Free sample puzzles, Killer Sudoku, Samurai sudoku | Also tagged , , , , , , , , | 2 Responses

Samurai Killer

Here we go – Killer Samurai with full (quad) symmetry! Click on the puzzle thumbnail to access the puzzle. Tweet The first step (innies and outies) in solving it is here.

Posted in Free sample puzzles, Killer Sudoku, Samurai sudoku | Also tagged , , , , , , , | 2 Responses

Samurai Killer

Here we go – Killer Samurai with full (quad) symmetry! Click on the puzzle thumbnail to access the puzzle. Tweet The first step (innies and outies) in solving it is here.

Posted in Free sample puzzles, Killer Sudoku, Samurai sudoku | Also tagged , , , , , , | Leave a comment

KILLER Samurai

At long last, I just uploaded my first ever Killer Samurai Sudoku. As all our other puzzles – it’s PERFECT ;). Why: 1. It has one and only one solution. If you claim differently – triple check all the rules that apply. 2. This solution can be found by logic only – no trial and […]

Posted in Free sample puzzles, Killer Sudoku, Samurai sudoku | Also tagged , , , , , , , , , , , , , , , | 8 Responses

Welcome new visitors!

Yesterday there was a post at blogs.guardian.co.uk about Killer Sudokus and a link to our site was posted. As a consequence, we’ve had some 600 referrals from that post within 12 hours (and overnight too)! I’d like to welcome our new visitors and to suggest them to go through the previous messages posted here – […]

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