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Jabberwocky by DadJokes

We thought you might like to watch us solve a puzzle collaboratively so we're delighted to share this video with you - made today - in which we take on the sudoku Jabberwocky by DadJokes.

It features an extraordinary ruleset but it's a fascinating solve and we really enjoyed pitting our collected wits against it!   

Let us know what you think of this new style :)  

The video can be watched here:

https://youtu.be/0l-3yUGXZW0

And the puzzle can be played here:  

https://tinyurl.com/5n6pa7wf 

Rules: 

Please READ FULL RULES before attempting.   The digits along each arrow must sum to the digit in the circled cell. Adjacent digits along each green line must have a difference of at least 5. Digits along each purple line must be a set of consecutive digits in any order, and must not repeat. Any set of three sequential cells along a yellow line must contain a low digit (1-3), a medium digit (4-6), and a high digit (7-9). A black dot between cells indicates cell values with a 2:1 ratio. A white dot between cells indicates cells with consecutive values. Not all dots are shown. Cells with colour are used in Stage 2, but otherwise have no purpose. 

This puzzle is solved in 3 stages:   

Stage 1: Normal Sudoku Rules DO NOT apply; place the digits 1 to 9 exactly once in each row and each column; each 3x3 box within the grid is solved as an abstract 3x3 (ie three digits need to be placed in each row and column of the 3x3 box once each. It's up to the solver to determine which three digits they are. Valid digits are from 1-9 only). These 3x3’s are NOT necessarily solved independently. You may need to use clues from other boxes in the grid in order to complete these.   

Stage 2: Colour the entire grid into three different snakes whose heads and tails are the given cells with the same colour; these snakes are non-branching and do not touch themselves orthogonally or diagonally; exactly one of the snakes contains all of the white dots; and the black dot is a border between two snakes.   

Stage 3: erase all of the digits that appear on the longest snake; erase all of the digits that appear on arrows (including the circles); erase all of the digits that appear on purple lines; now, solve as a regular variant Sudoku using the constraints in the grid and remaining numbers as givens. Normal sudoku rules will apply at this point.  

The puzzle was released on Logic Masters Germany here: https://logic-masters.de/Raetselportal/Raetsel/zeigen.php?id=000AT3

Comments

Please do another of these, it’s a treat to see how your brains work together. Although in terms of the format, I don’t think it quite works with simon explaining grid coordinates to mark, when we the viewers can already see it. Can you try both looking at simon’s screen, like with the livestreams? Would polish the experience somewhat

It certainly does suggest a question that really needs answering: is collaboration or competition a better format? Simon, Mark: do some tests on this. Preferably a whole lot of tests. Like; a _lot_ of tests. (We'll tell you if/when we get bored of them.)

You describe my reactions to this video very well! I loved this, and I agree that the interactions BECAUSE Mark and Simon were not looking at the same grid were part of the fun and the amazingness (probably not a real word ...) of the whole experience. I look forward to the next one of these.

Emily Williams

Thanks, enjoyed this. I think the first stage was my favourite.

Athel Stan

That was hugely entertaining! For starters it a brilliantly fun puzzle. All 3 parts were entertaining because (for different reasons) they came up with unexpected aspects. The first because the logic with 3x3s is just plain weird. The second because it was so surprisingly forced. And the last because it's astonishing that two almost completely unrelated parts lead to what was actually an interesting variant sudoku in its own right. But also, the format was terrific. So good to finally see you both not only solve the same puzzle, but also at the same time. It was a bit like watching a singles AND doubles tennis match at the same time; some of it was complete co-operation, some of it was a little more like direct competition. A wonderful combination. I was going to suggest maybe using some technology so that Mark could directly see Simon's screen. (Skype/MS Teams, Zoom, etc.) It would greatly aid communication. But now I've watched the whole lot I'm not quite so sure. The way you conversed so accurately and swiftly your ideas and what was happening was itself amazing to watch. Like listening in on a conversation between to experts in some science where you can sort of understand what's going on, but can't really understand how the two brains can work so much in sync. I joined Patreon mostly to support you guys, and only rarely dip into the member's only content. I'll happily keep subscribed for another few years just in case something like this comes up again. Thanks a lot, guys!

Having a lovely time watching you two together. I primarily watch videos where Simon solves Sudoku.

Anna Armstrong

This was fun. :)

Fernando Serboncini

Signed up for Patreon just to see this puzzle you guys were raving about and to see the collaborative solve. Absolutely wonderful!

This was a really great format and would love to see more. Had you considered doing a screen share between yourselves so you knew where the other was at?

David Werran

That was awesome. Where is the Simon and Mark irl puzzle video! Lol

This was amazing. I'd love to see more videos like this especially with complicated rulesets where both of you have strengths and weaknesses(snake vs pencil pencilmarking). Really fun to see both the banter and logic bounced around.

Anybody who hasn't watched this yet -- you have a treat coming!

ProfMeow

Please do make more like this.

Mister D

That was fun 👍

N+T Sudoku Solving Ltd.

Loved this!

James

Loved this! Love the chemistry between the two of you! I don't mind you being mean to each other, that's called friendship, I just don't like it when you're mean to yourselves!

Hey Guys, it was great, I like the banter between you both. I think it would be better if you could share the same screen, using Teamviewer or something similar. A lot of the chat was just about duplicating things between both your screens which isn't that interesting to the listener.

Stuart Tierney

That was a lot of fun to watch, thank you! I was extra amused that Simon pencil marked all of rows 4/5/6 in the first phase without the slightest complaint :-) Ewen

Ewen McNeill

My time for part 1: 17:45. (edited to add) To finish part 2: 25:21. (edited to add) Hmm... I got to a completed grid, which seems to be an accurate sudoku grid, in 47:29. But it says the solution I've given isn't right. So now I need to figure out where I went wrong... Oh, whew! Just a typo in one cell. Final time is 48:11.

David Henderson

This was an absolutely ridiculous amount of fun to watch. Please, please do something like this again! Edit: the one thing that would make this even _more_ fun to watch would be if we could somehow see both Mark's and Simon's screens at the same time. One of the most fun aspects of the video for me was the moments of realization that came when one or the other solver realized there was a discrepancy between what each of them were looking at. For example, at 48:56: "Oh you've unwound them, thanks to a 1-2 pair that I hadn't seen!" Those moments were pure gold. Thanks so much for another great video! (To be clear: in my ideal world, Simon and Mark wouldn't be able to see each other's screens, but we, the YouTube viewers, would be able to see both. That way, we'd be better able to follow along and anticipate when such a situation was about to arise.)

Zach Bean

I very thoroughly enjoyed that collaboration and I hope y'all both enjoyed it enough to do it again. Thanks as always for the great content!

Brent

This is a brilliant format, I really enjoyed it! It was great to see you bouncing off each other to solve the puzzle. It should definitely be very difficult or complicated puzzles that are solved on these type of videos, just like the one in this video. I hope you do decide to make more of these style of videos!

Adam N


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