Locked Candidates as Elimination Techniques: Pointing and Claiming Sudoku Strategies

Lesson #9: There are two types of locked Candidates (locked little numbers) sometimes referred to as Pointing and Claiming. Pointing is also called Block Line elimination since you first look at the block and then you eliminate candidates in the line (row or column). Claiming is the converse, it is Line Block elimination where you first look at the line (row or column) and then eliminate candidates in the block. This video illustrates both. Please subscribe for upcoming lessons and more follow along sudoku puzzles, and thank you for watching!
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[@davidfusani]

These are by far the best Sudoku tutorials. Clear, concise, not a wasted word or distraction. Thanks!

[@scorbett4370]

Thank you so much for posting these Sudoku tutorials. I find the strategies to be exciting, yet frustrating at the same time. Frustrating only because the memory of how and when to apply them keeps slipping away. Hopefully practice will help nail it down, so I am especially grateful that you will be giving us the next video to help fix the memory of today’s strategy into place! Presently I find myself stumbling towards completion, rather than solving with greater efficiency.

[@R0KURU]

This actually helped me, thank you

[@cathyarp806]

Again. thank you for such clear concise explanations😀

[@LearnSomethingNewEveryDay]

So nice of you, thank you!

[@SmartHobbies]

Very clear explanation on locked candidates. I like you use the underlining and circle animations to emphasize your points. I am looking forward to your next Sudoku video.

[@LearnSomethingNewEveryDay]

Thanks Smart Hobbies, I just posted a Medium level "solve with me", I hope you enjoy it! ua-cam.com/video/E15LVYtyp6g/v-deo.html

[@jimdouglas1425]

Why aren't the 4s in column 3 and block 7 not the locked candidates eliminating the 4s in column 1?

[@aidan6480]

Can’t wait to learn about x-wings, thank you so much for these videos they are very well done and your delivery is amazing ⭐️

[@LearnSomethingNewEveryDay]

Thanks Aidan....coming soon!

[@franciscolorenzolobosulloa9922]

Thank U for Ure videos. I have a question. why do u eliminate the 4s in G3 and H3? and not in G1 and J1. Thak U

[@louisab2687]

I was wondering the same thing

[@miaomiaomiao8192]

Because we are eliminating Line 1.

[@kennethmiu691]

Hi, I just came across this video. I have been playing sudoku for six months and I find the definition of a triple confusing. Everyone I asked told me the same thing. For a triple to be valid, the set of 3 candidates must be exclusive within the 3 cells and they cannot be found in other cells but this video just proves that definition wrong. In this video, the 3 candidates in the first col of the block in question 1, 2 and 4 are in other cells too and they are eliminated. A couple of comments already pointed this out. I have found in many puzzles that one or more of the 3 candidates of a triple is often found in other cells but that does not negate the validity of the triple. I find that super confusing. Under what circumstances can a triple be valid even when its candidates are not exclusive within the three cells? Would the expert poster care to clarify this issue please? Thank you!

[@shabbirsayyad790]

Why last line is blocked

[@kennethmiu691]

Subsequent to my comment, I realized that the 4s in col 3 of Box 7 can be eliminated because of international interference (forget if this is the correct term). Also, the 6 is a naked single. But, my comment still stands.

[@cathyarp806]

Looking forward to x wing explanation

[@LearnSomethingNewEveryDay]

Thanks Cathy Arp, I appreciate the comments!

[@kennethmiu691]

7 is also a naked single. This is not a good example to illustrate my comment.

[@robijsnovickis3615]

BRO WHAT WHY I CANT I UNDERSTAND