dxSudoku #31 2-String Kite Puzzle Solving Technique 

So Skyscrapers and 2-String Kites are X-chain variants. But I still look for Skyscrapers and 2-String Kites. But for all the other variants I just look for X-Chains. Make sure you get good at practicing X-Chains: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-di1aM5X0h6Y.html X-Chains probably occur more frequently than X-Wings.

Thank you!

Good catch. Another nice X-Chain sequence. You are good at X-Chains!

Nice catch. A good X-Chain sequence.

Another good catch. That one looks like Turbot Fish type X-Chain.

Nice catch!! I review all the test examples to try to get rid of this kind of thing. This one got by me. It's happened several times where I found the same pattern twice and if I catch it I put in new test example. But you are right that is definitely another 2-string kite. I'm just about to finish my next video on X-Chain. It turns out a 2-string kite is a variant of an X-Chain. Anyway, thanks for your feedback. Nice to see someone is actually learning it!

I was trying to make it simpler by saying the "one half of an x-wing". But technically what it is call is a type of "link" between cells. Most people will call them "Strong Links" these are really what I call "Either-Or Links" because it is a Strong and Weak Link in both directions. For more information on on links I think the video I did on the Turbo Fish starts out with a pretty good explanation of the different types of links: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-4Wz8LUAlDP0.html But try not to get hung up on the looking for links and link terminology. What you really need to think about is the logic of the way the 2-String kite works. Take a look at 1:28 mark in the video again. Notice the two cells being shared in block 6 (R5C7 and R6C9). If R5C7 has a value of 8 then R6C9 cannot have a value of 8. But if R6C9 is not 8 then R8C7 must be 8. So when happens is the intersection point of the cells R6C3 and R8C7 create a kill zone. It's almost like an X-Wing where the two X-Wing halves form a cross. When I look for 2-String kites I usually look for the first half an X-wing, then for either corner, see if the block being share by either corner has a perpendicular X-wing half coming out of it. An then I confirm if there's a kill zone having possible candidates to kill. I don't know what kind of X-Wing you have learned. I recently did this video which I think has a pretty good explanation of what I know as an X-Wing: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-6WnFkrUt_10.html I'm pretty confident I am following the standard definition of X-wing.