Alchemy in Sudoku

Рет қаралды 15,313

Cracking The Cryptic

Күн бұрын

Пікірлер: 55

@pyroslasher 6 күн бұрын

"Baldrick do you know the meaning of irony?" "Yes my lord! It's like goldy or bronzy... Just made of iron"

@volkerschwill2918 5 күн бұрын

A big "Thank you!" to Mark and Simon. You have helped me to improve my solving so much that I can solve some of the puzzles featured on the channel (well, maybe not the Phistomephel type). Under 30 minutes for this one, and this is entirely because of you and your great channel.

@eddieharwood7788 4 күн бұрын

I spent ages trying to solve this and eventually had a look at the start of Mark's solve. Then he talked about the 21cage. OMG!!!!! I had looked straight through it never noticing either the cage of the number 21.

@hilcovanbreeschoten720 4 күн бұрын

45:21 I was wondering why I was struggling so much. Then I watched Mark's solve. I quickly realised I completely forgot about or didn't register the 21 cage in the center. But apparently it still has a unique solution without it.

@nidoking042 4 күн бұрын

I had the same problem. I think most of the little killer clues are not required for uniqueness either, since I didn't use either of the ones covering the right half of the grid other than as checks at the end.

@emilywilliams3237 6 күн бұрын

Another very nice debut on the channel! I was just a bit too tight on time to try it myself before watching your video, Mark, but I will do so soon. It's just the kind of thing that I am sure I would enjoy solving. As always, thanks for the videos every single day. Very much appreciated (and very enjoyable)!

@oakleyg2870 4 күн бұрын

Best puzzle I've been able to solve in the last month at least. Great stuff.

@praematura 5 күн бұрын

A bit slow in the beginning, but finally realized the little killers were a bit more restricted than I first thought, and was able to finish in 18:58 (conflict checker off). Many thanks to Irius for a very cool puzzle!

@jonathanfarrow5423 6 күн бұрын

Mark makes an error at 14.33. The 7 could still go in R6C1. The correct path is to see that only 4 or 6 could go in R4C3 leaving a one-two pair in R6C2 and 3. Now 1or 2 can only go in R9C2 forming a pair with R6 C2 forcing R2C2 to be 4.

@TheArbieo 6 күн бұрын

I had similar, but more complicated. The key question is: where does 6 go in column 2. There is a (1,2,4,5,6) quintuple in the column, with one of them being in the 16 cage. This places the 9 in box 7 and removes 6 from the arrow. 6 also can't go in the box. The only remaining spot is R4C2!

@RichSmith77 6 күн бұрын

I think Mark's path is still a valid one, he just messed up the explanation by forgetting where the 9 had to go to force the 6 to appear in the 21 cage. He meant to say, if r5c3 is 9 then the 21 cage is 6+7+8, making r4c2 a 4, and r4c3 at most a 1 or 2. This makes the maximum on the 34 diagonal, in box 4, 8+3+2=13, which is nowhere near enough. So he can conclude r4c3 is not a 9, and must be 8. This is what he does conclude, he just messed up the explanation by thinking r6c1 was a 9 half way through.

@peaches760a 5 күн бұрын

I found a much longer but logically simpler path... due to the 34 diagonal r4c3 can't be 1 or 2, so it has to be 4 or 6, and 1 and 2 must be a pair in r6c2and r6c3. this leave r5c1 as a 5. The 21 cage must be completed with a 79 pair which can be resolved later. r5c3 is now 8, r5c7 is 9. In row 6, 4 and 5 must go in box 6 (c7 and c9). Looking at the 12 cage in box 6, a 5 would require 7 in the other 2 cells which doesn't work because of the 16 pair. So r6c9 is 4 and r6c7 is 5. Using the cage, the candidates for r4c9 are 2 and 7. However, 7 is too big for the 24 diagonal so it's 2 with a 6 in the cage and a 1 on the arrow. You can finish off the diagonal with a 9 in r7c6, and because of the 16 cage, we know that cage needs a 78 pair, leaving a 6 in r9c6. the 78 pair place the 7 in box 3 which helps resolve box 5 including placing the 9 in r4c4 resolving the 79 pair in box 4.

@isidornimages 6 күн бұрын

I struggled a bit, but still managed to finish in just over 38 mins, which is a very good time for me. All clues came in handy at one point or another. Good puzzle and I'd dare say very approachable for anyone that wants to try the different rulesets used in it.

@yashmehta9299 6 күн бұрын

Too beautiful to be a debut! (53:34 for me, but TBF I was snacking)

@AFastidiousCuber 6 күн бұрын

I don't understand what Mark is doing @13:10. He seems to forget where the 9 went in his case testing, and he says 9+7+6=21. He catches this mistake a moment later but goes with the 9 placement based on his earlier incorrect calculations anyway.

@RichSmith77 6 күн бұрын

(Sorry. I originally "corrected" your timestamp when it didn't need correcting. Not sure what I was looking at.) Yea, he confused himself as much as the rest of us there. He definitely hadn't proven what he thought he had proven. Even with his error, he "demonstrated" that it broke with 9 in r6c1, but then somehow concluded that meant r6c1 was a 9. Eh? Edit: I guess his argument holds for disproving 9 in r5c3. If that was 9, then the 21 cage would be 6+7+8, r4c3 would still be limited to a low digit (1 or 2), the diagonal in box 4 would be at most 8+3+2=13, and the diagonal in box 2 cannot make up the difference to reach 34. He just explained it wrong by forgetting where 9 went in the disprovable line.

@RichSmith77 6 күн бұрын

@2:37 "You can tell, from the sum of 34 in six digits, that repeats must be allowed" Er? 34 can easily be made without repeats. E.g. 2+3+5+7+8+9

@林老師-i5d 5 күн бұрын

Broke once and 28:39 for the 2nd try. nice puzzle

@angec9908 6 күн бұрын

The Solve Counter was at 1 when I opened it up. After a short hiatus I went back into the puzzle and it was over 400!💪 Edit: over 800 by the time I finished (with meals breaks 🤣)

@pastapete83 5 күн бұрын

I didn't spot that the central cage added up to 21. I spent a good half an hour using the most convoluted logic to solve this puzzle, then decided to watch how Mark did it so quickly. And almost immediately noticed, for the first time, that 21 cage 😂😂😂

@hilcovanbreeschoten720 4 күн бұрын

I had the exact same thing. It still solved though, but definitely a lot harder.

@pastapete83 4 күн бұрын

@@hilcovanbreeschoten720 I know, right!! I was just wondering what I was missing, because I knew Mark's video was only 22 minutes long.

@MattYDdraig 6 күн бұрын

20:35 A really nice pizzle with a super smooth solve path.

@thebitterfig9903 6 күн бұрын

Solved in 27:03. There were 8 solves when I started, 155 when I finished.

@jorghimvenerablebosstein7568 4 күн бұрын

I didn’t play the puzzle or watch the vid, but I recognize the thumbnail as Black Adder. Dope stuff and lit af! 😂 Btw, a black adder is a type of snake. Could you imagine a black adder themed puzzle featuring a snake? That would be straight 🔥🔥🔥!

@Gonzalo_Garcia_ 6 күн бұрын

13:46 for me. I never got to use a few of the clues. Nice puzzle regardless!

@Coyotek4 6 күн бұрын

22:29 ... fun solve, here Nice puzzle!

@DoubleJumper 6 күн бұрын

I completely forgot about the orange area, but I guess it's not strictly necessary, 32:15 for me.

@piarittersporn 3 күн бұрын

Very exciting puzzle.

@VonBlade 6 күн бұрын

Can it be that I hold in my mortal hands a nugget of purest green?

@tBagley43 5 күн бұрын

29:18 cool puzzle

@granndkane 5 күн бұрын

18:25 and only used the 34 little killer. Looked at the others at the start but completely forgot about them until the end

@toddschenk9133 2 күн бұрын

CTC -- why does the SudokuPad link not have a solution . . . But then when I solve the puzzle, there is presented a link to the puzzle with the solution?!? Very frustrating that a link with the solution (if available) isn't given in the video description.

@TheArbieo 6 күн бұрын

I was really struggling! And then i realized i didn't see the 21 cage in the middle! Somehow my brain blocked it out.

@AWanderingSwordsman 5 күн бұрын

27:49 for me. I took a bit in the middle section.

@TurquoizeGoldscraper 6 күн бұрын

18:50 for me.

@theashen 6 күн бұрын

Interesting that Mark always seems to get lucky the right way. His mistakes somehow always work out

@thesolarfutureenthusiast1102 3 күн бұрын

🤣Actually he does occasionally break the puzzle and have to backtrack through to a mistake. He does hit a better than 50% ration though so I suspect some of the videos with mistakes don't get uploaded 🤔

@dibot 6 күн бұрын

Almost one hour to solve 😅 I don't know why but I've never noticed the 21 middle box cage and didn't use it to solve the puzzle.

@fulltimeslackerii8229 6 күн бұрын

5:30 am I tripping or is 2 + 456 = 17 and not 19? It still causes a double four and is wrong

@theredstoneengineer6934 6 күн бұрын

20:45 for me

@drengskap 6 күн бұрын

This looks too tough to try without being able to check for correct progress, so I'll pass.

@davidh.4944 5 күн бұрын

1:05:41@#2521. It started out well, then bogged down for a long while. I just could not figure out where or how to reduce the possibilities. (Have I mentioned that I suck at arithmetic?) Eventually, though, I did discover two impossible candidates on the 34 diagonal that let me complete it. Not a bad one, overall, it just doesn't jive with my strengths.

@thesolarfutureenthusiast1102 3 күн бұрын

Good perseverance though, congrats for finding a route through. Lots of people saying this one is easy but I thought the little killer logic was convoluted. I got lucky and the first question I asked was one that broke so I finished in 26:59 but it could easily have taken me much longer.