This Most Simple Sudoku Rule = Fog Magic

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  • Опубліковано 4 лют 2025

КОМЕНТАРІ • 122

  • @gdc42
    @gdc42 8 днів тому +176

    Thanks for that solve! This puzzle was created for a challenge about thermo sudokus. The thermodynamics pun eventually made me try global entropy for the first time. It's interesting how powerful that global constraint is once you start recognizing the patterns and also how well it works with thermos. The thermo rule was inspired by "renban snakes" and the disappearing thermo aesthetics were inspired by jugglers "ghost cages".

    • @davidrattner9
      @davidrattner9 8 днів тому +2

      Fabulous how you set this and how you used the above as you mentioned as inspiration!

    • @BozoTheBear
      @BozoTheBear 8 днів тому

      Absolutely LOVED this, thanks! A good hour well spent. Lots of nice interactions :-)

    • @dinane
      @dinane 8 днів тому +1

      I really loved this puzzle. Thank you for bringing it out of your head and into the world for us to enjoy.

    • @mauriciojunior5082
      @mauriciojunior5082 2 дні тому

      Incredible puzzle as always, apart from the CTC videos is there a list of links to your puzzles?

  • @A_CC_K
    @A_CC_K 8 днів тому +51

    Fog in the title, I clicked on the video as quickly as possible and a gdc puzzle with a weird ruleset, the best way to spend an evening.

  • @DaDe224
    @DaDe224 7 днів тому +16

    I love the way the 1/2/3's were resolved at the end. Such an elegant flow caused by finding that first 3.

  • @matthiasvancampen3770
    @matthiasvancampen3770 6 днів тому +5

    It's only after the solve and watching the video I realise the beauty of the title:
    "third law" = there are three rules, don't forget about this one, "thermo" => 'thermometers', "dynamics" => dynamic fog.
    + "third law of thermodynamics" = entropy.
    And all of that in such a quality puzzle. great fun!

  • @martysears
    @martysears 8 днів тому +10

    Has there ever been a more suitable name for a puzzle than this? Excellent work

  • @xDanKaix
    @xDanKaix 7 днів тому +6

    My favorite part of this puzzle has to be the thermo in the middle at the end of the puzzle that gives the 12 pair in row 4 to disambiguate the 1s 2s and 3s. Beautiful puzzle!

  • @davidenas
    @davidenas 8 днів тому +25

    I bet the idea for this puzzle started from the title. The third law of thermodynamics is about entropy. So combining thermos, dynamic fog and global entropy encompasses every aspect of the title. Now the partially invisible thermos can't be inspired by the title, but it's a very cool idea.

    • @gdc42
      @gdc42 8 днів тому +12

      You are totally right. And the disappearing thermos was just a way to avoid "thermo snakes" in the rules (which I had in the first draft of this puzzle) because snakes seemed even less on flavor (and more complicated to word).

  • @janerobson2297
    @janerobson2297 8 днів тому +8

    Aargh! Simon filled in all the colours correctly for a change. But didn’t complete the last thermo. It was obvious where it went but it needed finishing,

  • @HeadMed
    @HeadMed 8 днів тому +10

    I had already solved this puzzle! I figured it would be on the channel eventually, it's so good!

  • @jamespanter8761
    @jamespanter8761 8 днів тому +10

    Love the fact you get to the end of knowing where each entropy goes without placing a single 123

  • @bastienjoly7422
    @bastienjoly7422 8 днів тому +1

    Been doing the puzzles on the channels for years and usually when it's 1h+ videos I know I wont be able to solve it but this time I did in 40min and really enjoyed the ruleset. Great puzzle! 5stars

  • @inspiringsand123
    @inspiringsand123 8 днів тому +27

    Rules: 09:34
    Let's Get Cracking: 11:36
    Simon's time: 58m22s
    Puzzle Solved: 1:09:58
    What about this video's Top Tier Simarkisms?!
    You Rotten Thing: 2x (50:38, 1:02:02)
    Bobbins: 1x (16:09)
    Three In the Corner: 1x (05:00)
    Maverick: 1x (04:58)
    And how about this video's Simarkisms?!
    Ah: 12x (16:06, 24:28, 31:23, 35:08, 35:08, 39:50, 46:01, 46:07, 1:01:28, 1:04:36, 1:07:52, 1:08:28)
    In Fact: 7x (31:00, 38:44, 40:39, 44:21, 46:48, 49:43, 52:09)
    By Sudoku: 6x (54:53, 57:37, 59:56, 1:03:27, 1:08:03, 1:08:14)
    Obviously: 6x (05:45, 06:47, 08:27, 20:57, 21:40, 48:03)
    Lovely: 4x (07:11, 07:45, 12:03, 55:07)
    Wow: 4x (28:12, 41:47, 47:02, 47:50)
    Cake!: 4x (00:19, 00:22, 05:24, 05:32)
    Sorry: 3x (21:46, 33:10, 58:05)
    Hang On: 3x (41:56, 53:09, 1:01:57)
    Weird: 3x (00:47, 31:48, 33:13)
    Goodness: 2x (36:50, 51:06)
    Naked Single: 2x (53:45, 59:34)
    Brilliant: 2x (03:13, 08:25)
    Surely: 2x (59:56, 1:04:01)
    Progress: 2x (44:55, 47:18)
    What Does This Mean?: 2x (40:10, 1:00:16)
    Good Grief: 1x (21:14)
    What on Earth: 1x (22:31)
    Bother: 1x (16:49)
    The Answer is: 1x (1:04:30)
    Out of Nowhere: 1x (53:31)
    Nonsense: 1x (51:22)
    Clever: 1x (1:09:41)
    Horrible Feeling: 1x (1:06:15)
    Fascinating: 1x (1:00:16)
    Incredible: 1x (03:07)
    Gorgeous: 1x (21:14)
    Come on Simon: 1x (55:49)
    Shouting: 1x (06:05)
    Of All Things: 1x (35:25)
    Box Thingy: 1x (1:09:04)
    Intriguing: 1x (06:16)
    Fabulous: 1x (03:33)
    That's Huge: 1x (1:03:31)
    Pencil Mark/mark: 1x (14:43)
    Most popular number(>9), digit and colour this video:
    Seventy Eight (5 mentions)
    Two (103 mentions)
    Blue (33 mentions)
    Antithesis Battles:
    High (83) - Low (53)
    Even (3) - Odd (1)
    Lower (3) - Higher (2)
    Column (17) - Row (15)
    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!

  • @elric58
    @elric58 8 днів тому +14

    Simon's brain was not build for Dynamic Fog puzzles. He gets instantly stressed if no fog is cleared, even when he knows the logic is correct.

    • @stevieinselby
      @stevieinselby 8 днів тому +10

      Yes, but Simon also gets stressed in normal fog puzzles when he puts in a digit and no fog clears _even when there is no fog surrounding the cell he filled in_ 😉

  • @davidrattner9
    @davidrattner9 8 днів тому +2

    Just more incredible enginuity from you GDC! Loved everything about it!! Panache and sublime solving from you Simon!
    Outstanding way to spend chocolate cake day!!

  • @kobs_0
    @kobs_0 8 днів тому +1

    Didn't have a chance to tackle this one last night - so took it on this morning.. Fantastic puzzle! I've said for the last while that I love these dynamic fog puzzles as it really gives a good sense of progress throughout the puzzle and that you're following the logic "correctly" in a sense. Also that ending was quite satisfying working out the 1s, 2s & 3s. Thanks for this one, gdc!

    • @kobs_0
      @kobs_0 8 днів тому

      side note: Simon not drawing that last thermo feels so wrong..

  • @longwaytotipperary
    @longwaytotipperary 8 днів тому +4

    Chocolate cake day??? I gotta go to the grocery store!! Looking forward to watching Simon solve this one!! Happy Monday! Looks Iike our temperatures above freezing all week!!!! Soooo done with freezing weather!

  • @jonhansen9622
    @jonhansen9622 8 днів тому +7

    Excellent, we shall use many secrets in solving this puzzle!

  • @albertlyngpetersen8702
    @albertlyngpetersen8702 7 днів тому +1

    This was my first entropy puzzle and I ended up spending 90 minutes. At the start, I had no idea of how to do it (I spend way too much time looking at entropy in box 1) but it is incredible how much is learned during the puzzle. I feel like I could just jump in with full understanding if I were to do another right now. All the properties and restrictions work beautifully together. I always like rules that end up restricting the puzzle much more than anticipated.

  • @petermawhorter9016
    @petermawhorter9016 8 днів тому

    Extremely lovely puzzle. I loved how much info you could get from just a few hints, but that at the same time, it didn't instantly constrain the whole grid.

  • @Tringard
    @Tringard 6 днів тому

    It's impressive how much was able to be solved with just 4 thermos (and then 2 to clarify the rest). Loved the logic around the 2x2 entropy.

  • @biaberg3448
    @biaberg3448 8 днів тому +7

    It seems a lot of sudoku creators have remarkable ideas these days.

  • @emilywilliams3237
    @emilywilliams3237 7 днів тому

    This was fun to watch. I am coming to it a day (or two?) late, but I knew, as soon as I saw it posted, that I would want to make time for it. Thanks, Simon, for solving while you are still not feeling top notch (not that there was any hint of it in your demeanor or this solve). And it is a fun and interesting puzzle.

  • @Millenassang
    @Millenassang 8 днів тому +2

    Fog is my favourite rule
    The possibilities seem endless and mechanics setters invent are always awesome to uncover

  • @friedchickenUSA
    @friedchickenUSA 8 днів тому +3

    very intuitively, and fitting with the physics-themed puzzle, you realized that calling a digits highness (low, medium or high) "polarity" was inadequate because you have three options, and almost stumbled into the concept of color charge, which is a fundamental feature of quarks in particle physics.
    -liz

  • @AnnaVahtera
    @AnnaVahtera 8 днів тому +9

    This would've been so much faster solve if Simon would not have ignored half the two-by-twos when looking at the polarities :D

    • @adrianhead6272
      @adrianhead6272 8 днів тому +2

      Most Simon solves could be significantly shorter videos.

  • @wpsetzer
    @wpsetzer 8 днів тому +9

    I love fog puzzles, but I have to admit, I really dislike dynamic fog. The whole point of the fog is to trigger that frisson when you put in the right digit. Dynamic fog takes most of that away, and it's like you're not even playing a fog puzzle any more.

    • @matthewgiallourakis7645
      @matthewgiallourakis7645 8 днів тому

      I would like dynamic fog more if it cleared at least the cells that would normally be cleared but possibly more

    • @gregorydyke5094
      @gregorydyke5094 8 днів тому +1

      The point of fog from the solver's perspective (pointing you at what to look at + giving that frisson) is not necessarily the same as from the setter's perspective (allowing clues to only be gradually revealed). I'm also only a minor fan of dynamic fog - but I think it's only because of the expectation set up by regular fog. If it were "putting in certain correct digits will make more clues appear", I'd be down again

  • @HunterJE
    @HunterJE 8 днів тому +1

    54:36 Can fill in the rest of the entropy in box 8 here-once the strip of three highs are placed, the strips of three cells on either side must alternate low and mid (since any 2x2 with two of the high digits on that middle strip must have one each of the other two entropy sets). Since there are two middle digits in column 6 that side must be low/mid/low, and to finish off the count of lows and mids for the box the other side must be mid/low/mid.

  • @longwaytotipperary
    @longwaytotipperary 8 днів тому +2

    ❤ the drawing of Joel, Emily, Gwinnie and Jo Jo and the photo! What a lovely family!!! 🥰

    • @davidrattner9
      @davidrattner9 8 днів тому +1

      The drawing is so cute and precious indeed!!
      Love that you made 3 separate comments on this video today . 🧡❤️💛💜😊😊

    • @longwaytotipperary
      @longwaytotipperary 8 днів тому +1

      @ feeling a bit scattered 😜! Also some iPad difficulties with making comments- so entered them separately! Hope you are doing well! Feeling better now that weather is warmer. Got a star gazer app on my phone and went out to see the planets aligned the other night! Could only see Mars/Jupiter/Venus and maybe Saturn - but really excited about star app - it shows constellations and other info! Way cool!😎. 🩷❤️🧡💛💚💜💙

    • @davidrattner9
      @davidrattner9 8 днів тому +1

      ​@@longwaytotipperary So cool you got a star gazer app able to see all those planets!! Didn't know you were into Astronomy etc.. Having a warmup here also . 50s towards end of week ..had bright sunshine today. Definitely puts me into a better mood. Being scattered isn't fun.

    • @longwaytotipperary
      @longwaytotipperary 8 днів тому

      @davidrattner9 we’re getting up to 60s by the weekend!!! I don’t like cold! Ground Hog day is Sunday - hoping for an early spring !!! 😎

  • @BitsandPieces47
    @BitsandPieces47 8 днів тому +1

    I think I did quite well :) followed along with you and got 63:41, thought of ideas normally just before you did, but it’s just not things I would think of on my own. I appreciate that you do these videos, help me with my thought process on variant sudokus.

  • @GoldenredDragon
    @GoldenredDragon 8 днів тому

    I really enjoyed this puzzle, I'm starting to think I've found my favorite setter in the person of gdc. The solves might be hard or tricky, but I never feel lost in the logic, and always manage to logic my way to end! Thank you for bringing these amazing puzzles to our attention!

  • @longwaytotipperary
    @longwaytotipperary 8 днів тому +2

    Also looking forward to Erin solving with Simon!!

  • @stephenmccarthy1795
    @stephenmccarthy1795 8 днів тому +4

    Didn’t finish the Thermo in box 5!

  • @461weavile
    @461weavile День тому

    I solved it in 69 minutes and change and with no hints. I'm pretty happy with that given the length of the video. A very nice puzzle with a very nice break-in and satisfying to the very last move.

  • @rysiek4896
    @rysiek4896 8 днів тому +1

    We need a Middley Melody Medley by Simon next 🎉

  • @Yttria
    @Yttria 8 днів тому

    Absolutely fantastic puzzle! The power of the entropy rule was great and allowed for such a sparsely populated grid. Never truly got stuck but it wasn't easy by any stretch. 4/5 for difficulty. Finished in 53:15.

  • @erikkubonhalvorsen4347
    @erikkubonhalvorsen4347 8 днів тому

    Great puzzle- so well constructed. Did it in 24 minutes. Just pure fun. Love these entropic colouring puzzles.

  • @Aixler
    @Aixler 8 днів тому

    What an amazing puzzle, i loved solving it. It flowed so nicely and coloring sudoku's are always so enjoyable.

  • @chocolateboy300
    @chocolateboy300 8 днів тому

    I finished in 87:54 minutes. That was a tough one to wrap my head around. Figuring out the meta of this entropy ruleset was so fun to do. I was a little slow on the upstart, but as I went along, I think I picked up some tricks. I think my favorite parts were the same logic and seeing that r5c1 and later on r7c7 both couldn't be high entropy as this causes another square to lack a high possibility. That is so cool how that kind of logic developed from this ruleset. Nice setting. Great Puzzle!

  • @davidhughes7174
    @davidhughes7174 8 днів тому

    Lovely solve Simon, elegant and smooth.

  • @grahamania
    @grahamania 8 днів тому +1

    01:01:33 for me. Not a great solve time, but I had a great time solving! Wonderful puzzle! Kind comment.

  • @xDanKaix
    @xDanKaix 7 днів тому +1

    Overall great solve, but you forgot to draw in the last thermo, not that you would have trouble with it.

  • @piarittersporn
    @piarittersporn 7 днів тому

    It took me exactly 89 minutes and I enjoyed it very much.

  • @karsaanita
    @karsaanita 9 годин тому

    I love colouring puzzles

  • @Coyotek4
    @Coyotek4 8 днів тому

    38:08 ... the 'entropy' rule was a particularly nice addition to the fog
    I loved solving this puzzle!

  • @carrymcbarry
    @carrymcbarry 8 днів тому

    This puzzle was absolutely fantastic!!!!

  • @specialkalberta
    @specialkalberta 8 днів тому

    The rules might be simple but everything else to do with this puzzle far exceeds my ability to understand.

  • @jamfisch2852
    @jamfisch2852 7 днів тому +1

    I really enjoy these videos, I watch them when I go to bed but tonight I want be able to sleep because Simon didn't finish the puzzle as he didn't draw in the last thermo, which immensely triggers my OCD 😢.
    Perhaps I will have to watch an older one to feel better.

  • @st3phgr1ce
    @st3phgr1ce 8 днів тому

    Fog and a coloring exercise- love it!❤

  • @victorolosaurus
    @victorolosaurus 8 днів тому

    the way this resolves is beautiful

  • @Adramelek14
    @Adramelek14 День тому

    Classic great, and most importantly fun, puzzle from gdc

  • @FranRojo91
    @FranRojo91 8 днів тому

    This is the very first sudoku from the multitud I've watch that I was somehow ahead of Simon in many of the logics! i'm proud of myself!! :D

    • @FranRojo91
      @FranRojo91 8 днів тому

      it was shortly lived, he outclased me yet again moving forward

  • @Gonzalo_Garcia_
    @Gonzalo_Garcia_ 8 днів тому +2

    32:20 for me. Struggled quite a lot with this one.

  • @ericpraline1302
    @ericpraline1302 7 днів тому

    Jolly spiffing fun, thanks.

  • @olima-
    @olima- 8 днів тому +1

    Pinball-wise I've had the same youth... nice memories.

  • @Coldheart322
    @Coldheart322 2 дні тому

    takes a bit of getting your head around it, but I liked this one (and managed to solve it myself).

  • @vjay4297
    @vjay4297 8 днів тому

    Genuinely surprised by that (not so) deadly 123 in the end.

  • @srwapo
    @srwapo 8 днів тому

    57:20 with the fog not lifting once telling me I made a mistake in box 1. Thinking about the low/med/high for the break in was fun. I'm used to these puzzles having a more "regular" pattern, so was surprised to get 789 in a row a couple of times.

  • @jnfrnold
    @jnfrnold 6 днів тому

    41:59 Why is Simon afraid of 6? … because 7 8 9. 😂

  • @SekGuy
    @SekGuy 7 днів тому

    @54:53 yeah. that's a 79 pair... Simons says, totally missing that the adjecent 8 is a way faster way to see it.

  • @CatDr01d
    @CatDr01d 8 днів тому +1

    53:33 "Thats really odd" No Simon, its even.

  • @przemekmajewski1
    @przemekmajewski1 7 днів тому

    Damn, that was good! A gem to solve.

  • @emilybh130
    @emilybh130 7 днів тому

    Thanks for the lovely birthday wishes from my kids to my spouse. You made his day! And, you were right about the names: Joel goes by JoeJoe and Gwendolyn goes by Gwennie.

  • @CallindorCray-dp7no
    @CallindorCray-dp7no 8 днів тому +14

    The last thermo surely felt left out.

  • @jaymuse127
    @jaymuse127 8 днів тому

    I found out my birthday is chocolate cake day. Well when you share such a day with 2 greats such as Mozart and John Witherspoon chocolate cake is a plus

  • @craftsmanwoodturner
    @craftsmanwoodturner 8 днів тому

    27:00 Loving your unexplained casual reference to Dusty Bin. I can't help wonder what all your international viewers made of that! To explain: an old British TV game show was called 321, and featured Dusty Bin as a character and a booby prize.

  • @PathOfShrines
    @PathOfShrines 8 днів тому

    Very cool puzzle. Even the mopping-up was surprisingly interesting. 55:19 for me.

  • @laurencemclean3333
    @laurencemclean3333 8 днів тому

    Solved myself in 70:56, quite happy witb that!

  • @tonym7012
    @tonym7012 8 днів тому +1

    Blue is actually hotter than red.

  • @shawncarter7188
    @shawncarter7188 8 днів тому +1

    TNG Pinball was AWESOME

  • @57thorns
    @57thorns 8 днів тому

    38:56 has me confused at first, it has to be blue, so it can't be five, while Simon says it the other way around.

  • @MiaaaaaChan
    @MiaaaaaChan 8 днів тому

    48:12
    I don't normally post my time but seems I did pretty good today
    Very intuitive solve!

  • @Kirbyfan87827
    @Kirbyfan87827 8 днів тому

    Finished in 38:55 with help from the video.

  • @colinmackenzie4363
    @colinmackenzie4363 8 днів тому +2

    Happy Chocoday cake Day !!!🥮

  • @PauxloE
    @PauxloE 3 дні тому

    Simon forgot to draw in the Thermo in box 5 (it continues with the 5 and 9).

  • @wanderlustwarrior
    @wanderlustwarrior 7 днів тому

    1:15:08 for me. Tough, but fair!

  • @PauxloE
    @PauxloE 3 дні тому

    Title: "This Most Simple Sudoku Rule = Fog Magic" - I don't think this counts as "Most Simple Sudoku Rule" - you got thermos, partially even invisible, and additionally the entropy, plus the fog. One of them might count as simple, but certainly not the combination.
    I got stuck after ~ 90 minutes, then watched until Simon gave me a hint at 42:45. Managed to finish it from there. 187:21 in total, solve counter 7075.

  • @paula-zzz
    @paula-zzz 8 днів тому +5

    happy chocolate cake day everyone!!

  • @jacob9692
    @jacob9692 8 днів тому

    I cheated and got 4 numbers at the start didnt know how to start this than was a breeze! Liked this puzzle alot :)

  • @huxflax
    @huxflax 8 днів тому

    Shoutout Sheeeeeila! You are now part of this cult, the spell has been cast 😅

  • @DuskMagick
    @DuskMagick 6 днів тому

    Just wanted to say that the SudokuPad app for some reason doesn't like the fog. It wouldn't update to clear any fog, even with a correct digit, but then I exited the puzzle and came back and the 3x3 area around each correct digit was revealed, which is not how the puzzle was built. I'm not sure if there's some setting to check or some known fix for this, but this puzzle is essentially impossible and incorrect on the app for me.

  • @eckberthighwater2555
    @eckberthighwater2555 7 днів тому

    Eventually Simon examines row 5

  • @LithmusEarth
    @LithmusEarth 8 днів тому

    19:29 In both versions, the 9 in box 1 ends up in the same place. Column 2 Row 1. You either go straight up or straight out, if you go out 9 cannot be in a culdesac with 789 so it has to go away, so you should be able to place the 9.
    24:24 He sees it.

  • @daanperelachaise
    @daanperelachaise 8 днів тому

    37:24 for me!

  • @irrotational
    @irrotational 7 днів тому

    Just had an idea for a new song... "tiny progress" sung to the rune of "tiny dancer"

  • @KrisCadwell
    @KrisCadwell 8 днів тому

    At first I thought the title of the puzzle said "dynamies" instead of "dynamics". It's much cuter that way to be fair.

  • @Timlagor
    @Timlagor 8 днів тому

    I do love me some fog

  • @AditaBattleForge
    @AditaBattleForge 7 днів тому

    oh no! Simon didn't finish the last thermo! (it curls around to the 9 in r4c6)

  • @jadziadax1969
    @jadziadax1969 8 днів тому

    Simon, chocolate cake day should be on your birthday!

  • @smahoney1212
    @smahoney1212 8 днів тому +1

    Yay for Chocolate Cake Day!

  • @fares3550
    @fares3550 8 днів тому

    we need someone to make a middly counter for this video

  • @tymon5349
    @tymon5349 8 днів тому +1

    The numbers on the blue and green kinda hard to read in this palette. Pretty sure om not color blind

    • @SvobodovaEva
      @SvobodovaEva 7 днів тому

      It could be your screen settings. It looks fine on my phone.

  • @lazyhaus
    @lazyhaus 8 днів тому

    01:48:59 for me

  • @TurquoizeGoldscraper
    @TurquoizeGoldscraper 8 днів тому

    62:30 for me.

  • @brettaspivey
    @brettaspivey 8 днів тому +1

    A+

  • @clayrab
    @clayrab 8 днів тому

    kind

  • @LednacekZ
    @LednacekZ 8 днів тому

    51:26 today. quite hard.

  • @myfyrmadocjones
    @myfyrmadocjones 8 днів тому +1

    You forgot to complete the thermo starting in box 5, could go to the 9 or 8 (if allowed to join the other thermo).

    • @RichSmith77
      @RichSmith77 8 днів тому +2

      Thermos cannot overlap is in the rules (so it has to go to the 9).

  • @EkuuleusNorth
    @EkuuleusNorth 8 днів тому

    Every step hard fought. 100mins. Should have been more agressive about colouring.

  • @iceberg54321
    @iceberg54321 7 днів тому

    Incomplete puzzle, one thermo was not completed.

  • @Pritchie45
    @Pritchie45 8 днів тому

    58 minutes