How To Solve Puzzles With Respect - Sudoku Handmade Classics #25

In How To Solve Puzzles With Respect – Sudoku Handmade Classics #25 by Smart Hobbies, I show you how to solve a Classic Sudoku created by Tallcat called Keii. Tallcat created this puzzle as an homage to Shye, another great Sudoku setter. This is a difficult Sudoku requiring multiple advanced strategies to solve including a never seen on this channel before Sashimi Swordfishssssssaaa. In the video, I show you the viewer how to solve this puzzle logically from beginning to end without guessing and explain all the advanced solving strategies as I apply them. Thank you Tallcat for permission to feature your puzzles on my channel.

This puzzle can be found at the following link:

This video is part of my Sudoku Handmade Classic series on my YouTube channel, Smart Hobbies. The goal of this series is to share the joy of solving Sudoku puzzles with you.

Strategies demonstrated in this video:

Hidden Single
Naked Single
Naked Pair
Pointing Pair
Naked Triple
Finned X-Wing
Finned Swordfish
Sashimi Swordfish
Finned Jellyfish
Empty Rectangle
Skyscraper
XY-Chain

Contact me here:
CTC Fan Server (Discord): Timberlake#1905

Let me know what you think and how you did in the comments below. Thank you so much for watching.

Timberlake

[tallcat]

Thanks for a nice feature and interesting solve (also for how to pronounce the puzzle title!). I am continually impressed by your ability to spot patterns across the grid of numbers - it's something that I find very difficult myself! For this one, you found a very neat path through (with a lot of complex fish patterns!). I would love to say that that was all built in and intended - but I am not that good a classic setter :) This isn't quite a one stepper but the intended step i had in mind with the puzzle was a little different and can also be visualized in a couple of different ways (as i found out when it was tested - although it does converge on eliminations on the same cell.

[jessieslittleuniverse]

👍1！Amazing sharing my friend!! I love it!👍❤️

[v.r.mallikapalanisamy]

Great sharing nice veideo superb stay connected friend and nice day 🙏💐🤗😆😆😆😆

[TimingLifestyleTV]

I enjoy solving sudoku . Thanks for sharing

[laszloliptak]

Excellent puzzle and nice solve. I solved it in 35:30.






I loved all those finned fishes. I will look for them more actively :). My approach was a bit different. After noticing the 89 pairs in column 1 and row 9, I asked if r5c5 can be either 8 or 9. If yes, then r5c5 would be forced to be equal to r1c1 and r9c9, the latter of which would force this digit to be in column 7 in box 6, leaving no place for this digit in box 3. So r5c5 must be 1. After this I colored the 89 pairs to finish the puzzle (at 29:14: r6c3 must be the same as r9c5 using column 6, so r9c9 is the other digit; similarly, r9c9 must be the same as r1c8 using column 8).

[KangenAlec]

You couldve used a shortcut at 28:03 after you eliminate 2, you end up with 89-389-389 triple in a box with 3's locked in a R2. That puts 3 in a R1 and after that its a smooth sailing

[NyesBizarreCinema]

I'm terrible at Sudoku 😬 but I'm loving your channel! I just enjoy watching and learning.

[noeldillabough]

When you found the 789 triple in column 6 I was waiting for you to remove the 7 from the 15 pair and solve the 7 in box 5, you finally got it :) Loved these "finned" fish, learning new things!

[migoshungo]

Hi my Friend, where did get some of your puzzles specially this hand made, kind of interesting too.

[JohnRandomness]

I came from a video where Tallcat is about to react to your solve and explain his thinking. I decided to do the puzzle first. I wonder if I'd done it before. I see some interesting 89 pairs around the edge, but I don't know what to do with them.
(Later, mostly stuck) I found a finned X-wing in 1s, removing a 1 from a single cell. I'll take what I can get. I also found another 89 cell that might eventually help connect the bottom 89 pair with the side 89 pair.
(Later still) I found a finned jellyfish in 8s followed by a near-identical one in 9s. This did something: reduced a 189 cell to 1.
The pair of finned jellyfish seriously cracked the puzzle. The fallout gave me a bunch of digits and two-digit cells.
Then... I found a 24 cell near a 28 cell. I searched for a 48 cell just in case, and found one nowhere near. However, a 34 pair would force its 8 if the 24 cell was a 4. So now either the 28 cell or the 48 cell was an 8. Still useless, except that the 8 now attacked the 89 pair on the left. Either the 8 from the 28 or the 8 from the upper-corner 89 removed an 8 from R1C8. Bingo, the puzzle collapsed.

Now to watch your video. The finned jellyfish seemed intentional, as did the stretched-out Y-wing. The finned X-wing in 1s was, I suspect, accidental.

4:20 The finned swordfish in 4s: it's possible I might have seen it during my huge frustrated search, but I'd already placed a 6 in the affected cell. I went back to the near beginning, when I was still pencilmarking cell corners. The finned swordfish is visible and the target cell just has a corner 2. Shortly after, I placed a 6 there.

6:40 I think of all the work you did to remove a possible 4 from the cell, only to place a 6 in just a little bit later. As I stepped forward, I saw and remembered that I had colored in the finned swordfish in 4s. It was useless of course, but I hoped for a while I might be able to eliminate the fin or do something with it. But I think that you might find the finned jellyfish in 8s among all the noise, so I'm continuing forward to where I colored it.

However you have to find the two 789 triples first, to eliminate some 8s.

10:40 You found a finned swordfish in 8s (and will probably find it in 9s). Include column 4, and you get a finned jellyfish. Your swordfish seems to attack row 1, cells 4 and 5. The finned jellyfish (8s and 9s) attacks the center cell.
13:10 You found a different finned jellyfish, which still attacks the center cell.
18:20 The 1 you just eliminated was what I eliminated early in the solve by the finned X-wing in 1s.
20:10 The finned jellyfish in 8s has a corresponding finned jellyfish in 9s. You only need to shift over one row or column. You eliminate the 9 from the center cell, leaving only a 1.
23:10 Row 5 has a useful 89 pair.
24:50 For some reason, I didn't have 5 penciled in R5C9 so I placed the 4 and 5 instead of getting the 45 pair. I went back to check my pencilmarking, and saw that I made a mistake and didn't enter 5 in the cell. But it made life easier for me at this point. It looks as if you can still go for the 248 extended Y-wing.
26:40 Is this what one would call a screamer path? The 24-28 sequence?

[bigbroauctions]

Swordfish and X-Wing. I want to develop my own solution, so I can name it.

[strummer]

This one puzzle you can't solve with just pencil and paper