The Sudoku With Only One Visible Cell?!

*** TODAY'S PUZZLE ***

Albin Bernhardsson's Foggy Ninefield is a fantastic riff on the Fog-Of-War sudokus we've been loving so much. Don't cheat by guessing digits - everything is deducible logically and it's quite fantastic!!

Play it at the link below:

Rules:
Normal sudoku rules apply. The grid is covered mostly in darkness. Placing correct digits in cells will illuminate more of the grid. Digits must not repeat within a cage, and must sum to the given total. The given total is always in the uppermost, leftmost cell in the cage. All cells which correctly show the number of adjacent nines (including diagonally) are marked with circles.

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As well as the Phistomefel and Jay Dyer extravaganzas, Simon's solve of Magnus Josefsson's new puzzle Castle Wall Yin Yang #1 is now available as a bonus video. You can play the puzzle at the link below (and the logic-masters link contains an example):

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The new GAS pack is out on Steam for PC here:

It's already out on Android and App Store. 60 original puzzles by Sam Cappleman-Lynes, Clover and Philip Newman!! Earn party hats and dinosaurs with these brand new puzzles!

We've also released a FREE app full of handmade puzzles to celebrate reaching 500k subscribers - simply download the Cracking The Cryptic app on Android, Steam or App Store and then select the 500k pack. We're streaming a playthrough of this app and you can watch all seven episodes

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[xyldkefyi]

That final hidden cell being a given digit would have been a brilliant troll.

[TheFrogfather]

'by the medium of Nessie' is a solving technique I hadn't come across before!

[shaunbrowne]

It would have been hilarious if removing the last bit of fog had revealed a one-cell 7 cage.

[inspiringsand]

Rules: 06:49
Puzzle Solved: 46:49

What about this video's Top Tier Simarkisms?!
Bobbins: 5x (41:39, 41:39, 41:39, 41:39, 41:42)
The Secret: 4x (11:47, 11:54, 11:57, 12:05)
Maverick: 3x (32:45, 32:45, 32:51)
Phistomefel: 2x (03:53, 04:12)

And how about this video's Simarkisms?!
By Sudoku: 11x (14:26, 16:18, 18:41, 18:53, 19:17, 27:34, 27:49, 28:10, 28:15, 29:31, 45:26)
Beautiful: 10x (00:29, 02:54, 17:01, 18:17, 33:59, 37:31, 39:20, 47:09, 47:12, 47:50)
In Fact: 9x (00:21, 01:20, 05:25, 07:37, 10:52, 18:24, 29:04, 36:36, 42:57)
Clever: 6x (06:19, 15:37, 15:40, 33:53, 47:14, 47:18)
Brilliant: 5x (01:10, 31:16, 31:18, 46:46, 46:50)
Wow: 5x (17:03, 33:53, 33:56, 46:04, 46:04)
The Answer is: 4x (15:27, 16:14, 16:36, 38:38)
Out of Nowhere: 3x (25:18, 25:20, 43:51)
Hang On: 3x (18:15, 30:19, 42:42)
Obviously: 3x (06:30, 08:44, 17:48)
Pencil Mark/mark: 3x (27:21, 33:06, 38:00)
Lovely: 2x (17:03, 35:05)
Ah: 2x (42:57, 47:52)
Good Grief: 1x (37:33)
What on Earth: 1x (33:19)
Recalcitrant: 1x (43:34)
Naughty: 1x (43:34)
Of All Things: 1x (14:26)
Masterpiece: 1x (04:17)
Surely: 1x (23:18)
That's Huge: 1x (22:22)
Cake!: 1x (03:01)

Most popular number(>9), digit and colour this video:
Thirteen (13 mentions)
One (97 mentions)
White (3 mentions)

Antithesis Battles:
White (3) - Black (0)
Row (11) - Column (7)

FAQ:
Q1: You missed something!
A1: That could very well be the case! Human speech can be hard to understand for computers like me! Point out the ones that I missed and maybe I'll learn!
Q2: Can you do this for another channel?
A2: I've been thinking about that and wrote some code to make that possible. Let me know which channel you think would be a good fit!

[aronlide]

Fog of war puzzles could be in the book! Just make the grid into like a scratch-off lottery ticket. :P

[rehnahvah]

11:55 Seeing the joy on Simon's face when he knows he is about to reveal the secret of sudoku makes me happy!

[christiansalvati]

I've been away from the channel for a little while and I'm SO glad I stumbled back to this. It was my first fog of war puzzle, and I some how managed to solve it, even if it took me over 2 hours... Thanks for the beautiful solve, Simon!

[jamesbalch]

This is the second puzzle featured on the channel that I've managed to complete! It took me two and a half hours and was a lot of fun! Can't wait to watch Simon solve it in a fraction of the time!

[averygaron]

Given how long it took to reveal a second circle, I was really hoping that the one in the starting cell was the only circle in the puzzle

[Orenotter]

Astounded I am from the start,
For though he has quite a big heart,
His brain leaves me dazing.
It's freaking amazing.
No fooling. This Simon guy's SMART!

[MonkeyDRuffy]

I found out what the first number of this sudoku is. All by myself. Does that count as solving the sudoku? Yeah, didn't think so. 😅
I really like your videos. From time to time, I come back to look at you solving some sudokus, and I'm really impressed by your thought process. I often have to rewind the video to even understand how you solve the puzzle (I normaly watch your videos with double speed). I get proud every time I understood one of yout thought processes without having to rewind. Thanks a lot for making these lovely videos!🥰

[PegV.A]

Hi Mr. Anthony! I hope you feel better soon. Please take good care.

[stevieinselby]

Fog of War puzzles are one of the greatest inventions of 2022 and this one was no exception 👍🏻👍🏻
Completed in 35 minutes, I found it helped to mark 9s in a colour and then that prompted me and made it easier to check for the negative constraint.

[emanuele.brivio]

What a beautiful song you’ve chosen for this intro! And wonderfully played too… would love to listen the full version! 😊 now let’s see today’s sudoku 🤓

[HunterJE]

Best wishes for an uncomplicated recovery to your father!

[ravikrao]

This is one of the best recent videos, especially for a casual sudoku fan. It's a simple logical flow and exciting as more fog gets revealed. No complicated math or bifurcation (easier for casual fans to follow). This reminds me a lot of the original miracle sudoku video in the approachability and excitement that Simon has throughout.

[jenjibur]

This is the first one I've tried to play along. I got stuck a lot & then had to unpause the video to get a hint of logic. I was proud of myself for figuring out Nessie's shape on my own! I don't know if my brain is cut out for these kinds of puzzles, but it's sure fun trying!

[justarandomdood]

I love the fog of war rule soooo much, it's so much fun how discovering information is part of the puzzle, you can't just "come back to this area" as easily :D

[Yoanka]

I so love the little hat you've got left on Nessie at 36:00. She deserves it, finding her was one of my favorite parts of this solve. For a moment I even thought something was broken before I noticed how to make her tail. That feeling of going from "well this can't possibly be right" to finding the way to make something tricky fit in is one of my favorite parts of these puzzles.

[YonatanZunger]

What a fun sudoku! I love how the fog forces your attention to different parts of the grid at different times.