Our Two Favourite Rulesets Collide!

[@BremSterPuzzles]

I am so glad you enjoyed the puzzle. The name is a combination of two things. Yes it was made after watching the finale of Endeavour, the prequel series to Inspector Morse which I love. It was also made in dedication to a friend who works on tall ships, and Endeavour is the most famous tall ship in Australia. Thank you Marcus for everything you have done for me over the last 18 months, you have been a literal life saver. Simon, the two deductions you called out as your favourites were the things that I was most happy with being able to make work in the puzzle. I wanted this to start quite gently with the introduction to the weird quadruples clues with the ? used to be able to precisely place the clues for revealing at the right time, then ramp up the difficulty of the deductions as you progressed through the puzzle. I am so glad this got featured for all of these reasons. Thank you again for all that you do for the community, and I am glad having one of my puzzles in the queue was helpful when you were time contrained. BremSter.

[@prahas777]

Good job, BremSter! :-)

[@masheroz]

Were the question marks in the quadruple clues designed to push digits around to change their visibility in the fog?

[@rockratzero]

​@@masheroz precisely, and done to very good effect :)

[@davidrattner9]

Lovely puzzle from you!! Great setting!!

[@stephaneforget4693]

Interesting puzzle but sadly can be brute forced in a short time due to the fog clearing up on correct placements.

[@Baritocity]

Using the question marks creates a flow of clue information that I don't think is possible except with this combo of rules. So cool!

[@disaidra]

Simon: "if I have any trouble with this puzzle there might be no video" Me, knowing full well the video was uploaded because I am watching: "omg I hope he manages to solve it in time"

[@masheroz]

I checked the video length to see if he got it done on time.

[@rachelrose7027]

I love the addition of the question marks to reveal information from the fog by moving where the numbers appeared in the circles

[@tim_hutton]

After watching these videos for a few years, Simon revealing The Secret gets funnier every time.

[@levimiller193]

I have to skip it these days, It's a difficult watch after the 27465648 time haha

[@Godlord3]

I rarely find myself having the time to attempt the puzzles so I only watch the solve, but found this one approachable enough to give it a shot. What an absolute joy to solve, thanks for showing it!

[@francescopetracca374]

And BremSter delivers! Beautiful puzzle for everyone!

[@Wecoc1]

I bet the "?" are so you can only reveal the required digits once certain cells are revealed

[@Unchained_Alice]

Yeah. If I remember right he said it was so you could see the right digits on the quads at the right time

[@TurquoizeGoldscraper]

I agree. When I saw how "?567" was laid out, I figured the "?" was only added to force "567" to be visible.

[@crhodgkin]

Ah! I was so confused as to the function of the "?." Using them to adjust the placement of the clues to either hide them or reveal them with fog present makes a lot of sense.

[@sarahnash7174]

Exactly

[@BremSterPuzzles]

This is exactly right. I spent a long time trying to make whitespace work so I could position the clues, but the various setting tools and/or SudokuPad would just ignore the whitespace; so I had to resort to the ? in order to be able to do positioning.

[@chomikhunter]

24:37! Wow. This is my first and probably only time that I will ever solve a sudoku quicker than Simon! This was a brilliant puzzle and may also be the first fog-of-war puzzle that I've successfully solved. Amazing puzzle and great solve by Simon.

[@tonyawright6020]

The question marks were to push the clues to the correct part of the fog being lifted. Took me a minute to figure out why they used them. Nice setting!

[@duruffio]

It took me until reading this comment to understand their purpose! Thank you!

[@HunterJE]

Probably even more work for Sven to make it work but would be interesting to do a fog puzzle where certain cells or digits were "lighthouses" that revealed more fog than others...

[@felis_timon]

I've seen some fog puzzles in which only some cells revealed the fog. That's not that different, is it?

[@xaostek]

At this point we're basically on our way to reinventing Akari!

[@KCML82]

I've solved this puzzle from Bremsters channel a couple of days ago. I like how very often different logic leads to the same outcome. Great video, great puzzle

[@stubbsz]

The 19 cage caused be a lot of pain. There were a couple of moments for me, when i shouted , YES!. i.e. little bits of logic I didn't expect and felt good to have found them. Thoroughly enjoyable puzzle

[@emilywilliams3237]

Very fun puzzle - I did not have time to try the puzzle before watching the video today, but I will do so later. These fog of war puzzles that lead one through beautiful deductions are actually quite good to use to help newcomers to some of the variants learn how they work. Thanks, BremSter and thanks, Simon!

[@majkgmajkg2613]

Wow! Can't believe that first time I did something quicker than Simon. I'm working on sudokus for 2 months now so I think it's pretty impressive. Also I love fog sudoku!

[@RL-gl8qg]

Bremster, this was lots of fun. Love the way you use partial reveal of the cages to hint at the potential range of a cage total.

[@BremSterPuzzles]

Thank you very much. I am glad you liked it.

[@EmonEconomist]

This was really clever! Solved in 23:37. Loved the way the combination of fog and '?'s ensured the clues were revealed at just the right time!

[@jonbrowne]

Solved this a few weeks ago! Fantastic puzzle from Bremster! Looking forward to watching the video now!

[@Pablo360able]

A forty-eight minute solve for me! I’m impressed I was able to make some of the breakthroughs in this puzzle. At one point I was worried I’d messed up, not because I saw something that looked wrong, but because I’d just made a very abstract deduction that wouldn’t reveal its falsity for a long time if I’d messed up, something that has happened to me more times than I can count. It was all good, though. I didn’t use the secret on the wrench; I jumped straight to the sumless cage and the quadruple that ended up being a 69.

[@jsadvent8240]

Remember the episode of “Morse” in which his first name was revealed? It was in the form of a cryptic crossword clue "My whole life's effort has revolved around Eve." (9)

[@inspiringsand123]

Rules: 02:46 Let's Get Cracking: 07:57 Simon's time: 27m11s Puzzle Solved: 35:08 What about this video's Top Tier Simarkisms?! Three In the Corner: 9x (09:45, 12:15, 13:02, 28:58, 29:01, 29:04, 29:58, 30:18, 34:19) The Secret: 3x (17:00, 17:04, 17:13) Cooking with Gas: 1x (33:42) And how about this video's Simarkisms?! Ah: 10x (08:58, 12:04, 12:20, 20:15, 21:46, 23:40, 24:42, 26:14, 28:49, 32:38) The Answer is: 5x (11:42, 12:11, 18:20, 19:42, 22:49) Hang On: 5x (15:50, 23:17, 25:34, 28:03, 28:05) Brilliant: 4x (00:56, 04:44, 04:44, 06:03) Lovely: 3x (21:49, 26:03, 34:05) Pencil Mark/mark: 3x (10:06, 20:53, 23:02) Naughty: 2x (04:40, 13:02) Useless: 1x (20:53) Sorry: 1x (04:56) Beautiful: 1x (01:26) Elegant: 1x (35:52) By Sudoku: 1x (22:52) Approachable: 1x (01:38) Rotter: 1x (12:18) Magnificent: 1x (36:01) Obviously: 1x (04:05) Fabulous: 1x (36:03) That is Sick: 1x (21:46) That's Huge: 1x (22:37) Have a Think: 1x (30:20) Cake!: 1x (06:27) Most popular number(>9), digit and colour this video: Twenty One (6 mentions) Three, Four (61 mentions) Green (6 mentions) Antithesis Battles: High (3) - Low (2) Lower (2) - Higher (0) White (2) - Black (0) Column (15) - Row (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!

[@karsaanita]

I promised myself not to start solving these before bed… but this looks so fun

[@greyZ0]

My time was 31:31, although I struggled quite a bit around the last cage. The deductions were simple yet elegant and I am pleasantly surprised I got them all so quick!

[@davidrattner9]

Glad u had such a wonderful visit and time spent with your sisters Simon

[@ServantOfSatania]

23:14 Always love me a good approachable puzzle, and watch Simon get all giddy with every bit of fog lifted

[@ryanriddell8376]

One of the most fun puzzles for me in a while. Thank you!

[@VeritasUnae]

A brisk morning walk through the fog for me, finishing a bit after 42 minutes. I misplaced one digit onto fog, but before I fixed my solution I tried to correct my thinking (it was the placement of 9 in box 2). Really fun puzzle and I’m looking forward to watching Simon’s solve over breakfast now, haha.

[@sarahnash7174]

Love this one! So glad you've done it 😁

[@davidrattner9]

Was lovely puzzle indeed!! 🙂

[@ffets-SEP]

To see the roping in boxes 2,5,8 was quite difficult, but with this clue from Simon, I could save the puzzle in 69 minutes.

[@doriswlongAgoandfarAway]

Sisters, little foot steps, friends in the city - Simon has such a full life. Kind remark Simon and thank you.

[@nathandts3401]

Don't always know with fog puzzles whether or not I'm meant to be using clues that I can just about make out. The question marks made it pretty clear so that was cool.

[@DWestheim]

I wouldn't dare call it approachable; or maybe it's me. But I found the first half of the solve much easier than the second half. That cage in boxes 2/5 completely stumped me for 20+ minutes.

[@flikkie72]

This was the most fun I've had with a sudoku in a long time!

[@8thy]

First time in a while doing a sudoku because wanted to get my brain going and this puzzle looked cool, so did it before watching the video, and got it in 120m50s, which I’m honestly pretty proud of! I wasn’t working on it the whole time so I’m impressed even including that was only two hours haha usually I’m worse it feels haha! Fun puzzle, thanks Bremster for the lovely build!

[@puritan7473]

The question marks were a very clever touch - I believe they were placed just to hide some digits in the dark until you do some work!

[@Pablo360able]

And to reveal other digits that otherwise wouldn’t be visible.

[@XxBobTheGlitcherxX]

Hearing "Oh thats sick" caught me off guard 😂 (21:45)

[@57thorns]

I did this a few weeks ago and my favourite deduction was definitely the partially revealed cage that Simon painted yellow at 16:01

[@57thorns]

Of course the roping deduction and the center digit of box 1 are also sweet.

[@piarittersporn]

Wonderful puzzle. I love the fogs so much. 🙂

[@Unchained_Alice]

Went to do it first before I watched only to discover I did it already! Took me 39:33 apparently which for me wasn't terrible. Loved doing it. I even commented on the video of the creator. My memory is terrible

[@PriffyViole]

Got about halfway through the puzzle on the broken version of the link, before getting all the way through the fixed one on my own. It is *extremely clever* to use the puzzle's formatting that way.

[@Landis963]

4:02 I strongly suspect that the ? rule is specifically for that quadruple, or any other place where a quadruple is strategically placed so that it pokes out of the fog.

[@MarcusTheDorkus]

Breezed along and then slammed into a wall dealing with the left side of the puzzle. Took me a very long time to realize I could Sudoku the 7 in box 1. That barely helped though because I also got stuck at the 19 cage. I narrowed it down to the two possibilities but I kept confusing myself when trying the combinations and was failing to see that 6 in that cage was never in box 4. Enjoyable puzzle overall though. I like how fog of war puzzles look intimidating but actually end up being able to guide you along a solve path!

[@coolpapabell22]

Lovely use of fog of war. I got stuck for much longer around your 30:00 mark because I was too dense to rule out 6-1-5 so easily!

[@Jesthers]

Solved on my own! Got a little lost in box 3 (did the math wrong on the 21 cage because I didn't count the 3 in it, oops), and then again in box 1. Was missing that certain combinations broke some options of digits below (1+5 and 2+6) turning them into Schrodinger's cells. This was a nice puzzle though! Not too hard and not too long, a pleasant solve all the way through :D

[@ldsalomon]

I made the same mistake on the 21 cage! 😁

[@Rach881101]

26:02 for me. Fog of war puzzles are always so much fun!

[@kgeiger61]

Working through old puzzles that I missed. I love the Fog of War puzzles. This one was fantastic. Finished in 21:06.

[@arandolph846]

The two most difficult sees for me were the 15 and 26 ruling out possibilities for the 12 sum in the left 19 cage.

[@KittKattRED]

Lovely!

[@-Norix-]

Never wouldve gotten the 8 clue in row 2 in column 6. Very cool puzzle

[@davidh.4944]

I was cruisin' along very nicely until about 2/3 of the way through, then I hit an impasse and could not see how to move along for what seemed like ages. Only when I finally noticed the "what cells does that cage see?" restriction was I finally able to make it to the end, in an embarrassingly slow 91:37. It was also really hard for me to see the half-hidden quad numbers, in part because I use customized font sizes. I had to continually increase and decrease the size so I could see what they were. And I can only say it's a good thing the fog doesn't penalize you for attempting to place a wrong digit next to it.

[@CoffeeHead27]

34:04, i love this approachable fog sudokus

[@SomethingWellesian]

Really enjoyed this one, even though I got stuck on the roping trick. I really like a puzzle that can throw a spanner in the works that late in the solve; had to spend a while thinking about the 19 cage.

[@LavenderGooms]

31m53s loved it. Having to alter the clues slightly such as with the ? must be really interesting for the setters. They get to control exactly when the solver gets certain information and so keep the Aha! moments coming. Just a great rule combo here.

[@johnpauladamovsky86]

I live in the West end of Toronto Canada. One of my neighbors was Mike Weir's caddy when he won the 2003 Masters Golf tournament in Augusta Georgia. He's always bragging about his famous golf-friends. I wonder if he has enough clout with the current professional golfing tour, so he would be able to invite Simon and Mark to play a round with him and Michael Jordan at the Augusta National Golf Club? I think that would make an excellent and well-deserved vacation reward for the world's most prolific logic-puzzle enthusiasts. Thumbs up to the comment if you want me to ask him...

[@dannstarrjp]

26:14 for me. Very approachable but fun puzzle! I also like both of these rulesets, especially fog of war.

[@simonl4523]

It took me a little while to work out the point of the wild cards … but i got there in the end!

[@linforcer]

1:23:20 spent a looong time messing around with that last cage :P

[@GuilhermeCarvalhoComposer]

Oh I loved this one. Unfortunately I got _badly_ stuck for ages because my brain decided the 21 cage in box 3 did not extend into box 6. Which still yeilds the correct position for 4 in box 3, and only a sensible amount of options around that! But, surprise surprise, it won't let you go *any* further 😅 Once I started over, _made the same mistake again_ and THEN saw it and corrected it... it was a breeze. So yeah, not my best time ever. But it really is a very nice puzzle, everyone should try it.

[@imblackmagic1209]

pretty approachable, thanks for sharing!

[@jillyapple1]

ok, I'm still working on the puzzle, but I think the "?"s are to either hide or reveal quadruple numbers in certain ways as one clears the fog. For instance, at 13:02 you can see part of the 3 in the upper right clue. But if the "?" weren't there, pushing it left of center, it wouldn't be visible.

[@RealCadde]

19:30 I really like the nines in box 2 inside that cage. Where can you now put a nine in column 6 of the grid? Not inside box 2 and not in row 5 because there's already a nine in that row. R4C6 is a nine.

[@PriffyViole]

Regarding the question marks: I figured throughout my solve that they meant they just had to be different digits than the givens in the quad, but I think they're just there to hide the givens from certain angles.

[@livedandletdie]

It was truly an enjoyable puzzle, 34:28 to solve. There were quite a few places that made me question my sanity. Or rather my perception, I truly felt blind and didn't see the clue between box 3 and 6 in perhaps 3-4 minutes of time.

[@hanw3456]

ROULADE! Brilliant 👏

[@martysears]

Brilliant puzzle Bremster, really enjoyed this. Can anyone tell me please, what software is used to create fog of war puzzles? If it is within a creation mode of Sudoku Pad, how can I get this creation mode? So far I have only seen the solving part of Sudoku Pad. Or if it is made in another tool and imported into Sudoku Pad for solving, what is that other tool? Certainly doesn't seem possible in Penpa, F-Puzzles or Sudoku Lab

[@Coyotek4]

20:18 ... appreciatingly approachable Nice puzzle!

[@krayzeekev]

Cool puzzle. But almost impossible on iOS Safari. The quad clues are a little high in their circles so you can only see the bottom 1/2 to 1/3 of the ?/567 clue in box 6. I had to assume the little diagonal could only be the bottom of a 7. So I ended up watching the video until Simon got that far so I could see the clues in the video.

[@megalamb]

Lovely puzzle - Just in case people hadn't worked out the reason for the ? clues, they're purely for layout to hide or show the necessary digits from the fog - I suspect most people have realised that though!

[@Ryan-ys1qc]

29:59 for me. Glad to get it under half an hour, even if just barely!

[@srwapo]

41:23, I was stuck for quite a while and resorted to looking at the video. I was really confused how r3c9 could be a 2. You can't have a 2 in a 3 cell 21 cage! Oh, that cage goes down into Box 6 and is a 4 cell cage!!! I was able to solve it from there, some really nifty logic. One thing I really liked was how the digits where placed in the circle. There were spaces and question marks used solely so specific digits could be unhidden as you solve the puzzle. Like, the ?7?3 circle wouldn't normally be written like that, the 3 would be before the 7, but the 7 pops up first as you solve the puzzle and the 3 pops up later to give you the 37 pair in Box 7.

[@Nightknight1992]

i believe i used like 3 times the time on the left 3 boxes than the rest of the puzzle, the 17 cage really fried my brain xD

[@gamerbb2]

Thought I was going to beat Simon's time for perhaps the first time until I got stuck on the roping logic for nearly 45 minutes somehow 😅

[@martinyyt]

I made it as far as the roughly halfway point where Simon used the virtual extra region to make the next deductions.

[@nomore6167]

At 16:24, Simon said "Look at the wrench-shaped cage". I thought only Americans call that tool a wrench. Every non-American I've heard has referred to the tool as a spanner.

[@Raven-Creations]

3:58 The question marks were to avoid prematurely revealing the contents of the quad. If the two you're looking at weren't there, you'd be able to tell what was in the quad. Please stop doing logic on the basis that there might be a 3 in the corner. If it reveals something, it's by bifurcation, and if it doesn't it's just a silly waste of time. I wish the setters would avoid putting 3 in the corner, so that when it does happen, it's special. Very nice puzzle. After I filled the right half in just a few minutes, I thought it was going to be a doddle, but it ground to a halt pretty quickly, and I had to change gears.

[@JasonPeltier]

46:04 The roping definitely gave me a pause. I had to check your video to move forward on that step.

[@MarkWiseTechno]

I needed help from the video to see that roping logic Simon found at ~22:55, but very approachable as a whole!!

[@zachdoppler9383]

I rarely can ever solve any puzzles on this channel so a solve for me is a win. I came in with a pitiful time of 85:34 😅

[@Alphabet576]

loved this one! got 25:06 but i was afk for a few of that lol

[@daveturner5305]

Simon, can you clarify which stream I should watch Sven on tomorrow at 16:00 BST please.

[@CrackingTheCryptic]

Yes! kzbin.info/www/bejne/epDKnZpnZrRjpa8

[@bokmcdok]

What was the point of the wild numbers? They don't change anything

[@grahamrskelly6042]

On my browser the clues were off center and impossible to read when half of it was covered by fog... Had to watch the video to get the info in order to solve... OnePlus phone browser. But I still had fun the puzzle got hard but I liked the 8 in the wrench

[@theashen]

Apparently i am very bad at adding up to 15 :D but got there in the end. Fantastic fun

[@Auron902]

Glad I was able to solve this took me 2 hours but I got through it

[@eve_the_eevee_rh]

18:41 that was a blast to play, and wasn't that difficult!

[@Orenotter]

That wasn't too awful or scary. Quite nice it was, on the contrary. One thing in this puzzle, Though, causes confuzzle. Are those question marks quite necessary?

[@GQSmoos]

I solved this in 51:30. I had a big hangup in the middle I shouldn’t have struggled with. Spoilers for my solve ahead. I had the right side of the grid mostly done and was working in the middle. I failed to appreciate that a 1 in column 4 box 5 would prevent a 1 from appearing in box 2. Missing that deduction cost me around 15 minutes.

[@HunterJE]

I think what Simon was seeing as the 6 when the 69 was still partially covered was an illusion caused by the shape the selected-cell outline made in the corner of that cage when selecting an "L" triomono of that fogged cell and its neighbors to the right and below, that said if you looked very closely at the bottom half you could see that it was indeed a 6 without anything extra revealed...

[@Kelters]

I raced through the first half of this puzzle. Very nice lift-off. But then I did a super-heavy with the remainder and ended up with a very embarrassing finish time. It was interesting how crunchy it got in the middle. (At least, for me, anyway! Problems with simple math at the root cause.).

[@Crystal-ef3dm]

25:00 definitely a nice and approachable puzzle! Got stuck a little at the end though

[@AndreAy1975]

Solved it without help from the video. Nice idea.

[@jansteyaert1]

someone make this man a puzzle with 4 3's in the corner... somehow.

[@samgillmusic]

Struggled to eliminate possibilities for that last cage for a very long time, but got there eventually in 54:02

[@abekolko7143]

Fog of war puzzles should reveal wrong clues when the user places incorrect digits to prevent cheating. Even if an honest player places an incorrect digit, they'll be shown correct clues in an otherwise unrevealed portion of the puzzle, and once that information is made known to the player, it's hard not to metagame.

[@Kirbyfan87827]

This one started out easy but then got really tough. It took me 51:16 to finish, but I did it.

[@BremSterPuzzles]

The ramp up was part of the design, and I am glad you were able to finish. I am so glad you found it something you could do and I hope you found it as much fun to solve as I did to create. Thanks for persisting.

[@LuanMerlin]

Everytime I solve a puzzle with no threes in the corner I fill in four incorrect corner 3s at the end of the puzzle to compensate for not having got to enjoy that visual effect during my solve

[@michaels4340]

66:18, broke it once due to excess pencil marks lol

[@toastbrotfan6585]

How can you open this Puzzle with the Sudokupad App? Or does the App not work for Fog-puzzles?

[@pocoapoco2]

I'm not sure of what the point of the question marks is. Unless it is a workaround of the software to place the known digits in certain areas of the circle.

[@Gonzalo_Garcia_]

I solved this one when it was featured on BremSter's channel. A very fun puzzle!