Comments on: Perfect intersection of patterns, logic, & math
http://www.metafilter.com/177571/Perfect-intersection-of-patterns-logic-and-math/
Comments on MetaFilter post Perfect intersection of patterns, logic, & mathThu, 08 Nov 2018 15:03:35 -0800Thu, 08 Nov 2018 15:03:35 -0800en-ushttp://blogs.law.harvard.edu/tech/rss60Perfect intersection of patterns, logic, & math
http://www.metafilter.com/177571/Perfect-intersection-of-patterns-logic-and-math
I recently discovered <a href="https://www.kenkenpuzzle.com/">Kenken</a> puzzles. At the site you can select the grid size and level of difficulty. Borderline addictive, at least for me; YMMV. <br /><br />The best source I've found so far, for learning higher level strategies is <a href="https://math2.uncc.edu/~hbreiter/DavidsonInstitute/KenKen.htm">Harold Reiter's pages on the game</a>.post:www.metafilter.com,2018:site.177571Thu, 08 Nov 2018 14:56:27 -0800dancing leaveskenkenpuzzlesgamesmathlogicBy: cortex
http://www.metafilter.com/177571/Perfect-intersection-of-patterns-logic-and-math#7557557
Oh boy, I went down a Kenken hole a few years ago and I think my main daily play was that site, yeah. As a puzzle it's a nice variant on the Sudoku form; some more surprising twists in both spatial logic and the processes of elimination based on the different arithmetic operations.comment:www.metafilter.com,2018:site.177571-7557557Thu, 08 Nov 2018 15:03:35 -0800cortexBy: memebake
http://www.metafilter.com/177571/Perfect-intersection-of-patterns-logic-and-math#7557565
Ken-gratulations!comment:www.metafilter.com,2018:site.177571-7557565Thu, 08 Nov 2018 15:12:48 -0800memebakeBy: boo_radley
http://www.metafilter.com/177571/Perfect-intersection-of-patterns-logic-and-math#7557576
<a href="https://www.chiark.greenend.org.uk/~sgtatham/puzzles/">Simon Tatham's Portable Puzzle Collection</a> is a collection of really thoughtful and occasionally difficult puzzles.
It has both a <a href="https://www.chiark.greenend.org.uk/~sgtatham/puzzles/js/keen.html">kenken</a> and <a href="https://www.chiark.greenend.org.uk/~sgtatham/puzzles/js/solo.html">sudoku</a> implementations that I still love, even after playing for at least a decade.
They're untimed and not at all competitive. Maybe that's a good thing. Maybe it isn't.comment:www.metafilter.com,2018:site.177571-7557576Thu, 08 Nov 2018 15:24:29 -0800boo_radleyBy: edheil
http://www.metafilter.com/177571/Perfect-intersection-of-patterns-logic-and-math#7557583
The site is adblocker-hostile, fwiw.comment:www.metafilter.com,2018:site.177571-7557583Thu, 08 Nov 2018 15:32:27 -0800edheilBy: numaner
http://www.metafilter.com/177571/Perfect-intersection-of-patterns-logic-and-math#7557584
yeah I would give it more of a chance if it wasn't so aggressive with ads and anti-adblockingcomment:www.metafilter.com,2018:site.177571-7557584Thu, 08 Nov 2018 15:34:39 -0800numanerBy: dancing leaves
http://www.metafilter.com/177571/Perfect-intersection-of-patterns-logic-and-math#7557589
Yes, I know. I go to the site, select the puzzle I want, disable adblocker and click the popup, then re-enable adblocker.
A bit of a pain, but it seems to work as I don't notice intrusive ads and the annoying popup only comes up once, at the beginning of a game.comment:www.metafilter.com,2018:site.177571-7557589Thu, 08 Nov 2018 15:38:47 -0800dancing leavesBy: Merus
http://www.metafilter.com/177571/Perfect-intersection-of-patterns-logic-and-math#7557590
I use Ghostery, and if I turn off the ad blocking part of Ghostery it lets me through but blocks all the tracker-backed ads. It's the tracking I care about, for the most part - ads that are served directly by the site tend not to be as much of a threat.comment:www.metafilter.com,2018:site.177571-7557590Thu, 08 Nov 2018 15:43:25 -0800MerusBy: cooper green
http://www.metafilter.com/177571/Perfect-intersection-of-patterns-logic-and-math#7557599
KenKen's aggressive ads drove me elsewhere. That's how I found <a href="http://www.brainbashers.com/futoshiki.asp?error=Y">Futoshiki</a>.comment:www.metafilter.com,2018:site.177571-7557599Thu, 08 Nov 2018 15:59:02 -0800cooper greenBy: Freelance Demiurge
http://www.metafilter.com/177571/Perfect-intersection-of-patterns-logic-and-math#7557613
In ublock, I just gave the greenlight to 'kenkenpuzzle.com' and left everything else blocked.comment:www.metafilter.com,2018:site.177571-7557613Thu, 08 Nov 2018 16:20:38 -0800Freelance DemiurgeBy: I'm always feeling, Blue
http://www.metafilter.com/177571/Perfect-intersection-of-patterns-logic-and-math#7557614
Chipping in on the general grumbling, I <em>happily</em> disabled Adblock yet it somehow still wants me to disable Adblock. Patience gone, thanks for linking though, because I <em>was</em> interested.comment:www.metafilter.com,2018:site.177571-7557614Thu, 08 Nov 2018 16:22:16 -0800I'm always feeling, BlueBy: I'm always feeling, Blue
http://www.metafilter.com/177571/Perfect-intersection-of-patterns-logic-and-math#7557622
Missed the edit window, which I fully intended to abuse. Was thinking, "Gosh I hope that wasn't their first FPP... oh, I could check... oh, shit!". Not for me to tell you, but please do keep finding and sharing cool stuff like this <strong>dancing leaves</strong>.comment:www.metafilter.com,2018:site.177571-7557622Thu, 08 Nov 2018 16:30:36 -0800I'm always feeling, BlueBy: GhostintheMachine
http://www.metafilter.com/177571/Perfect-intersection-of-patterns-logic-and-math#7557639
Been playing this for years. The New York Times also has a free daily <a href="https://www.nytimes.com/crosswords/game/kenken">KenKen</a> feature.comment:www.metafilter.com,2018:site.177571-7557639Thu, 08 Nov 2018 17:02:05 -0800GhostintheMachineBy: TwoToneRow
http://www.metafilter.com/177571/Perfect-intersection-of-patterns-logic-and-math#7557658
Lately I've been hooked on <a href="https://www.puzzle-binairo.com/?size=3">Binairo</a> and <a href="https://www.puzzle-nonograms.com/?size=2">Nonograms</a> -- the site has some other good puzzles as well (scroll to the bottom of the page).
You have to give them an email address to save your games times, but <a href="https://www.mailinator.com/">mailinator</a> accounts work fine.comment:www.metafilter.com,2018:site.177571-7557658Thu, 08 Nov 2018 17:41:31 -0800TwoToneRowBy: bruceo
http://www.metafilter.com/177571/Perfect-intersection-of-patterns-logic-and-math#7557670
i've been doing these for over a decade in the NYT. super fun. my favorite review of them was in slate: <a href="https://slate.com/technology/2009/02/will-kenken-be-the-next-sudoku-or-a-passing-puzzle-fad.html">"I Was Told There Would Be No Math"</a>comment:www.metafilter.com,2018:site.177571-7557670Thu, 08 Nov 2018 18:13:14 -0800bruceoBy: dancing leaves
http://www.metafilter.com/177571/Perfect-intersection-of-patterns-logic-and-math#7557707
Long, long ago I played a game that was a rather complex version of Binairo, I believe. I can't quite remember it -- I think it had more than 2 symbols, and there were four grids set next to each other in a square and you had to solve each quadrant as well as the overall table.
Nonograms is kinda fun, too.
There's also a daily Set puzzle <a href="https://www.setgame.com/set/puzzle">over here</a>.comment:www.metafilter.com,2018:site.177571-7557707Thu, 08 Nov 2018 19:43:35 -0800dancing leavesBy: Wulfhere
http://www.metafilter.com/177571/Perfect-intersection-of-patterns-logic-and-math#7557727
I love KenKen. It's a favorite to get out for math students to kill time. One summer I had kids so into them they would ask me to pull them up on my phone and then each kid would draw them out in their own notebook and do them. Fun to project on a whiteboard too. They are a great team activity, especially if you institute a rule that to place a number you must explain the logic.
Kenken has even gotten me through a visit w/ my in-laws when we pulled one up on their tv and sat around on the couch doing them together.comment:www.metafilter.com,2018:site.177571-7557727Thu, 08 Nov 2018 20:12:35 -0800WulfhereBy: lucidium
http://www.metafilter.com/177571/Perfect-intersection-of-patterns-logic-and-math#7557875
Well, I grabbed an app and started a 6x6 one that I've been stuck on for an hour. Love it, thanks!comment:www.metafilter.com,2018:site.177571-7557875Fri, 09 Nov 2018 05:43:55 -0800lucidiumBy: each day we work
http://www.metafilter.com/177571/Perfect-intersection-of-patterns-logic-and-math#7557897
One thing I'm not getting - since each demarcated block is evaluated on its own, isn't the grid layout just window dressing?comment:www.metafilter.com,2018:site.177571-7557897Fri, 09 Nov 2018 06:28:52 -0800each day we workBy: J.K. Seazer
http://www.metafilter.com/177571/Perfect-intersection-of-patterns-logic-and-math#7557931
<em>One thing I'm not getting - since each demarcated block is evaluated on its own, isn't the grid layout just window dressing?</em>
I'm not sure I understand the question, but one of the constraints of the puzzle is that each digit must appear exactly once in each column and row.comment:www.metafilter.com,2018:site.177571-7557931Fri, 09 Nov 2018 07:20:52 -0800J.K. SeazerBy: GenderNullPointerException
http://www.metafilter.com/177571/Perfect-intersection-of-patterns-logic-and-math#7557934
It has the same row/column constraints as sudoku. Big difference is that instead of square cages that must also be a permutation you have irregular regions that must satisfy an equation.
As if I didn't need yet another dimension to my current sudoku obession.comment:www.metafilter.com,2018:site.177571-7557934Fri, 09 Nov 2018 07:22:00 -0800GenderNullPointerExceptionBy: cmfletcher
http://www.metafilter.com/177571/Perfect-intersection-of-patterns-logic-and-math#7557937
The grid needs to contain unique digits in each row and column from 1 through n where n is grid size.comment:www.metafilter.com,2018:site.177571-7557937Fri, 09 Nov 2018 07:27:28 -0800cmfletcherBy: Just this guy, y'know
http://www.metafilter.com/177571/Perfect-intersection-of-patterns-logic-and-math#7557940
I had initially assumed that groups could also only have 1 of each number, but that is not the case. So you can have a 14+ (for example) that is a 5,4,5 if it goes round a corner.comment:www.metafilter.com,2018:site.177571-7557940Fri, 09 Nov 2018 07:28:24 -0800Just this guy, y'knowBy: twilightlost
http://www.metafilter.com/177571/Perfect-intersection-of-patterns-logic-and-math#7557946
Not sure if it is available on iPhones but for Android, I use an app called KenKen Classic II. You get 50 free games, and I paid the $20 or so to get 1000 new puzzles. You can choose your grid size, the difficulty, and the math required (just + for example, or all +-x/). No ads.
Logic games like KenKen and Sudoku soothe my anxiety. I love 'em.comment:www.metafilter.com,2018:site.177571-7557946Fri, 09 Nov 2018 07:34:56 -0800twilightlostBy: holborne
http://www.metafilter.com/177571/Perfect-intersection-of-patterns-logic-and-math#7558041
I love KenKen. I used to have the app on my phone but had to delete it for space reasons; now that I have a ton of space I should get it again. Oddly, I never did see the appeal of Sudoku, maybe because it doesn't require math.comment:www.metafilter.com,2018:site.177571-7558041Fri, 09 Nov 2018 09:04:26 -0800holborneBy: Clinging to the Wreckage
http://www.metafilter.com/177571/Perfect-intersection-of-patterns-logic-and-math#7558047
This is my kind of thing and pretty quick to get the hang of. I used to play a ton of Sudoku but I burned out and switched to Drop 7 which an iOS update killed. Also, KEN-GRATULATIONS! is exactly what I want it to say when I win.comment:www.metafilter.com,2018:site.177571-7558047Fri, 09 Nov 2018 09:10:17 -0800Clinging to the WreckageBy: GenderNullPointerException
http://www.metafilter.com/177571/Perfect-intersection-of-patterns-logic-and-math#7558048
Sudoku is all math, it's just not all arithmetic.comment:www.metafilter.com,2018:site.177571-7558048Fri, 09 Nov 2018 09:10:35 -0800GenderNullPointerExceptionBy: holborne
http://www.metafilter.com/177571/Perfect-intersection-of-patterns-logic-and-math#7558282
Excellent point, and my mistake.comment:www.metafilter.com,2018:site.177571-7558282Fri, 09 Nov 2018 12:14:03 -0800holborneBy: GenderNullPointerException
http://www.metafilter.com/177571/Perfect-intersection-of-patterns-logic-and-math#7558419
Sorry, that was overly snarky by me.comment:www.metafilter.com,2018:site.177571-7558419Fri, 09 Nov 2018 14:02:34 -0800GenderNullPointerExceptionBy: JHarris
http://www.metafilter.com/177571/Perfect-intersection-of-patterns-logic-and-math#7558496
Yay, I got:
<pre>
+-------+
|2+ | |
+-------+</pre>
and stared at that for three minutes before choosing to reveal solution, just to find out the + was actually a ÷ I couldn't tell apart at that font size.comment:www.metafilter.com,2018:site.177571-7558496Fri, 09 Nov 2018 15:43:10 -0800JHarris