Sudoku Tutorial #3-A Part 1 / Strong Links & Weak Links Examples & Tips

[@tzampini]

I have watched many Sudoku tutorials on YT from many "experts", and yours are the best hands down. Bravo. Great job.

[@SudokuSwami]

Thanks very much. Welcome aboard.....

[@enriquezakai7612]

You prolly dont give a damn but does anybody know a way to log back into an Instagram account? I was stupid forgot my password. I would love any help you can offer me!

[@finneganricardo712]

@Enrique Zakai Instablaster ;)

[@enriquezakai7612]

@Finnegan Ricardo Thanks so much for your reply. I found the site on google and I'm trying it out atm. Looks like it's gonna take a while so I will get back to you later when my account password hopefully is recovered.

[@enriquezakai7612]

@Finnegan Ricardo it did the trick and I now got access to my account again. I'm so happy! Thank you so much you really help me out :D

[@jobo1053]

I love your presentation, clarity and detail, I've played sudoko for many years and I've chosen your videos to help me improve. Thank you!

[@sgarcata]

This is a fabulous series. I had got totally stuck on hard puzzles and was just about to give it up. And as someone who has played and studied Baroque keyboard (even built a small harpsichord kit), I really appreciate your music as well!

[@iCYY]

the best sudoku youtube channel for sure

[@linda1281]

Thank you so much! I really enjoy your piano as well as the sudoku instruction

[@tomstrickland6002]

I would like to get the software that you are using in your tutorial. Is there an app for it? Can you insert puzzles on it? Thanks, I enjoy your teaching techniques.

[@SudokuSwami]

Please send me an email. [e-mail] Thanks.

[@SudokuSwami]

If you enjoyed this Video, please don't forget to click the SUBSCRIBE button, and the Thumbs Up Icon. It will really help me out. Thank you!

[@randyslabach8681]

How do you decide which number you’re going to use for your second number and a strong link starting

[@hhampton]

What puzzle software is being used here?

[@tomstrickland6002]

Can I assume that you must expose all the candidates in the puzzle to use links and chains?

[@SudokuSwami]

Yes, you must be able to see ALL possible remaining Candidates. Otherwise, you could not differentiate a Strong Link from a Weak Link.

[@jamsaw7606]

I started at the beginning and you have mentioned "chains and loops" twice without my knowing what you mean by chains and loops. Where should I have learned that. I must have missed it somewhere.

[@SudokuSwami]

A Chain is made by stringing Candidates together via Strong Links and Weak Links, in such a way that the Links ALTERNATE, Strong-Weak-Strong-Weak-Strong, etc. This is called an "Alternate Inference Chain," or AIC. A Loop is simply a Chain that loops back to where it starts. Chains and Loops, when constructed correctly, can help you make logical conclusions which will help you solve puzzles. Watch the Lessons in chronological order, and it will all become clear.

[@randyslabach8681]

With a strong and weak links, you go and pick like three numbers how do you know what numbers you wanna pick when you pick candidates sometimes it seems like you pick three different numbers for candidates and I don’t know where you pull the numbers from. I know it’s me not you help.

[@twigd3825]

on your example of the nines.. the nine in block six can see both the nines in block four and block nine i call this the crab. nine in block four is the body and the two other nines are the claws. therefore if the body is true the claws are false and if the body is false both claws are true

[@romeolucindo998]

I am looking for a blank sudoko grid, the one you are using for demonstration that can filtered all candidates posibilities i.e the small number lined up in the cell, can you me help me find one that I can use.

[@SudokuSwami]

Hello Romeo. I do not like to discuss software here on my Channel. Please write to me at [e-mail] and we can discuss this further. Thank you.

[@greghassig5239]

@@SudokuSwami I'm trying to find a good filter for Sudoku, can you help!

[@remyrat8961]

I am making notes... Video 3 and 3A summarizing: STRONG LINK: If A is false then B is true WEAK LINK: If A is true then B is false To make chains and loops, you alternate between strong and weak links. To make a chain, you have to START and END with a STONG link. With a loop, you don’t have to start with a strong link becouse a loop doesn’t have a beginning or an end. Correct? Before I’m going to watch video 4, I’m going to try to understand the logic regarding to chains and loops when I alternate between strong and weak links. I’m afraid my curiosity will force me to watch the video before I find out the awnser 😅

[@SudokuSwami]

Yes, you are correct about everything you said, except for one thing. It is true that AICs Types I & II must both begin and end with a Strong Link. This insures that at least ONE of the endpoints must be True, and knowing this allows you to make Candidate eliminations. But.....ALL Chains do not have to start with a Strong Link. It depends on what you are trying to prove. In certain circumstances, you may want to start with a Weak Link, or a Weak Inference. You will find this to be the case in many advanced techniques. But REGARDLESS, all AIC's must alternate between Strong and Weak. This is the only way you can make any deductions. And further, in a perfect Continuous Loop, there will be an equal number of Strong and Weak Links, and it won't matter where you begin, as you noted. But in a Discontinuous Loop, there are exceptions to this Rule. Please watch Videos #38 thru #44 to understand how Loops work. Good luck.

[@URDESPORTS]

Why are you getting old sir 😭