Solving a Hard Level Sudoku Puzzle with Skyscraper Swordfish AND Forced Chains!!!

E16: Three advanced level strategies are used here, you are going to love this puzzle! It starts out very easy, so you might want to skip to about half way through when the good stuff starts. I have to use the skyscraper and swordfish and then forced chains to get to the end, but its lots of fun and very challenging. I hope you enjoy, and, I hope you learn something!!!

[SmartHobbies]

I enjoy your animations and approach to solving, quite methodical. Thanks for featuring this puzzle that had multiple advanced strategies.

[martarubiotexeira]

One of the best tutorials for Sudoku I have ever encountered! I have subscribed to follow up on the remaining lessons 🙂

[Javaman]

I guess it didn't bother anyone else that she missed placing the 1 in block 9 right in the beginning. Then I miss a lot of stuff myself so I can't talk too much. But I kept seeing it and expecting her to see it... lol

[YT_Ludde]

in the begining you could have put a 1 in column 9, cell 7

[wendys]

Love these videos - thanks so much for making them and hoping to up my sudoku game with some more practice. The color coding for the what-if scenario was very helpful.

[vetman]

Great Example of all 3 techniques. . Thank you for the videos

[arvidschu]

One question to 11:54. Why is this a naked Single? Why can‘t the 8 be in Column 8 as well?

[anandarao]

Very hard one .. I appreciate your skills in solving the puzzle.. could not understood how 2 came in 8th block.. once again thanks for the detailed explanation.🙏

[sinulariasin]

Yeah, I learned something…..I’d rather watch you struggle than me 😋lol

[elifhentschel]

Amazing! Thank you for this video! Very clearly explained. 👏

[TimT]

You're a good teacher but I did this puzzle without any strategies an guessing.

[anwarhasankhan]

Very Very thanks for giving me much knowledge sloveing sudoku

[georgesthibaudeau]

I did this without notations and solved it on the bais of the 27 pair quite visible in row 8 at col 2 and 7, plus the additional 27 bi-value cell at r2c2. A bit of mental gym to examine the restrictions this implied for the 2s and 7s elswhere followed by a couple of alternative scenarios and bingo, i got it and completed the puzzle in 20 minutes. No fishing for swordfish or inspection of high rise buildings for me, I am too dumb to see that !

[gauravipal]

When you were scanning for 1s you missed a chance to put the 1 in cell I7.

[nayfen]

The last technique used is not a forcing chain, it's a w-wing though

[charlottewebb]

Good explanation of the skyscraper and swordfish. I like your logical approach.
What sudoku software did you use for presentation?

[martynreed]

Is this technique Master level or Fiendish or Extreme ?

[gmanpublications]

Great Video. I am enjoying watching you solve the puzzle. I was wondering you had mentioned that this puzzle was in HoDoKu; how did you get rid of the candidates but still be able to add them back later on? I am asking because when I hid the candidates but could not add them when I wanted to.

[BeneathTheMound]

Hello and thank you for your heloful videos. Thanks to your lessons, the sudoko puzzles I have been doing are now too easy. Can you please recommend a digital platform for challenging puzzles?

[DieDieEla]

Snyder notation can be done with the 9 in block 7!!!