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Tag Archives: solving technique
How to solve Hidoku: “cornering” (or “dead-end”)
Here is an explanation of a Hidato solving technique that some people might find obvious and they use it without even thinking of it as a special technique. But, for those who still struggle with the more difficult puzzles, here is a quick guide of the technique that I call “cornering“. It can be used […]
Posted in Puzzle variants, Solving tips
Also tagged CONSECUTIVE, hidato, hidoku, how to solve, IQ, technique
2 Responses
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 IMPORTANT, innie, INNIES, innies and outies, IQ, Jigsaw Sudoku, Jigsaw Sudokus, killer, killer sudoku, outie, OUTIES, overlapping sudoku, sample puzzle, samurai, sudoku solving technique, Sudoku Variant, Sudoku Variant Puzzle, technique, twodoku, variant
3 Responses
Griddlers
Ok, this time I will show you a hanjie puzzle that is relatively straightforward until halfway through the puzzle you come to a point where you have to use one advanced solving technique. It will be explained in detail in the next few days. Until then – try to solve it yourself! UPDATE: There is […]
Posted in Free sample puzzles, Picross
Also tagged griddlers, hanjie, IQ, pic-a-pix, technique, UPDATE
1 Response
Extra special – Butterfly Killer Sudoku (hard)
Somehow butterfly puzzles have been neglected in the past few months and it’s time to rectify. A quick reminder – this breed of overlapping sudoku puzzles was suggested by udosuk and implemented by myself. There are 4 “classic” 9×9 Killer Sudoku puzzles inside this one. They all overlap and they all must be solved according […]
Posted in Free sample puzzles, Killer Sudoku
Also tagged Butterfly Killer, Butterfly Killer Sudoku, HARD, IQ, killer, killer sudoku, overlapping sudoku, rules, technique, Twin Nonets
7 Responses
Swordfish
A while ago I explained the X-Wing solving technique. Recently I shown my explanation of other basic, Classic Sudoku solving techniques. The only remaining solving method that I don’t consider trial and error is Swordfish. So, to complete the list of Sudoku solving tips, here is an example of a Sudoku puzzle that can be […]
Posted in Solving tips
Also tagged Classic Sudoku, IQ, Perfect Sudoku, solving tip, solving tips, sudoku solving technique, swordfish, technique, x-wing
34 Responses
Classic Sudoku Solving Techniques
It’s about time I finally explained the basic (and most common) Sudoku solving techniques. Most of you are already familiar with these, but for those who aren’t – I’d like to show my explanation. These techniques are used in ALL sudoku puzzles – Classic, Killer, Samurai and others. Make sure you fully understand them before […]
Posted in Samurai sudoku, Solving tips
Also tagged Classic Sudoku, hidden subsets, interactions, IQ, killer, naked subsets, pencilmarks, samurai, SUBSETS, sudoku solving technique, swordfish, technique, x-wing
10 Responses
Butterfly Sudoku Killer X
Here is this weekend’s special – a unique and never-seen-before Killer Butterfly X There are 4 “classic” 9×9 Sudoku puzzles inside this one. They all overlap and they all must be solved according to the rules of Sudoku and Killer Sudoku. You can use Twin Nonets solving technique for this one! However, in contrast with […]
Posted in Free sample puzzles, Killer Sudoku, Sudoku Variants
Also tagged Butterfly Sudoku, Daily Sudoku, Daily Sudoku Variants, IQ, killer, Killer Butterfly, killer sudoku, rules, Sudoku Killer, Sudoku Variant, Sudoku Variants, technique, Twin Nonets, UPDATE, variant
4 Responses
Killer Butterfly
I don’t know if there is a species that go under that name and if there are, my apologies to them. Another world premiere Sudoku variation puzzle – Butterfly Killer Sudoku. Thanks to one of our regular visitors udosuk for suggesting this concept – this should encourage you to suggest a layout for overlapping puzzles […]
Posted in Free sample puzzles, Killer Sudoku, Sudoku Variants
Also tagged Butterfly Killer, Butterfly Killer Sudoku, Butterfly Sudoku, Daily Sudoku, Daily Sudoku Variants, IQ, killer, Killer Butterfly, killer sudoku, rules, Sudoku Variant, Sudoku Variants, sudoku x, technique, Twin Nonets, variant
4 Responses
Mini Killer Samurai – HNY!
2×2 Killer Samurai! for kids to enjoy on New Year’s Day! So, you only use numbers 1-4 and everything else is the same as usual. If your kids are struggling with “big” Killers, give them this one so they could learn the solving techniques etc. But first make sure YOU are able to solve it! […]
Posted in Free sample puzzles, Killer Sudoku, Samurai sudoku
Also tagged IQ, killer, Killer Samurai, Mini Killer Samurai, New Year, New Year Day, samurai, technique
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Merry Christmas! :)
Merry Christmas to all that will celebrate it on December 25 and happy holidays to everyone else :). I uploaded the most difficult puzzle yet for this occassion – it’s a Killer Samurai X. It’s not difficult because it’s an “X” but because you do need to apply all the difficult solving techniques that you […]
Posted in General, Samurai sudoku
Also tagged IQ, killer, Killer Samurai, Merry Christmas, Mini Killer Samurai, New Year, samurai, technique, UPDATE
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