I love math and puzzles, but this number puzzle is puzzling me! Is there a system to solving them or is it just a whole mess of trial and error?
I love math and puzzles, but this number puzzle is puzzling me! Is there a system to solving them or is it just a whole mess of trial and error?
what the heck is that?
aaaaaaaa!!!! i just went to the website. i want to run away... fast. (my mind is lazy at times and i have the attention span of a 5 year old sometimes...)
BTW... nerd!! (yes, i called you a nerd- now go do my homework. i have a physics test and a lab report.)
I LOVE sudokus!!
And yes, there is a system to solving them. *It's hard to explain without an actual puzzle in front of us where I can SHOW you, but I'll do my best.
The basic rules are, each row, column, and 3x3 box contains the numbers 1-9. *So, what you want to do is process of elimination. *If a blank square is in a row that already has a 7, then it can't be a 7. *If its column has the numbers 1 through 6, then the only remaining numbers it could possibly be are 8 and 9. *if there's already an 8 in its 3x3 square, bingo, it must be a 9!
they take a little time to get the hang of them...but I guarantee if you love math and puzzles, you will LOVVVEEE sudoku!!
-Emily
For a while I was writing a sudoku-solving algorithm for my math class, but I didn't have enough time to devote to it. A good primer on basic strategy can be found here. The idea behind my solution was to keep a table of which numbers remain unused in each row, column, and square. Such tabulations help eliminate a large amount of choices from consideration. I never figured out a good way to decide on which of the available choices was best, so you're on your own from there, but keeping tabs on unused numbers by itself seems to help noticably. (At least, for me it does.)
~Joe
PS - Keep multiple copies of your solution as you work on it! Nothing slows sudoku-solving down like rewriting the whole grid.
o//~ Livin' like a bug ain't easy / My old clothes don't seem to fit me /
I got little tiny bug feet / I don't really know what bugs eat /
Don't want no one steppin' on me / Now I'm sympathizin' with fleas /
Livin' like a bug ain't easy / Livin' like a bug ain't easy... o//~
I wonder how sudokus are created.
I think there's an open source sudoku solver, but I can't remember. Anywho I do remember reading the math theory fundamentals of it though, and I think they can be found in the wikipedia.Originally Posted by [b
Joe, thank you for the link. I added it to favorites.
Emily, what I had been doing is pick one of the 3x3's and solved that. Then I would move to adjacent 3x3 and get that one solved, with respect to the first one. And them I'd move on from there. But then my luck would run out and I'd realize that I hadn't found the correct combination from the first grid.
Theresa, (LOL!) thank you for the compliment! But I don't wear glasses and I thought all nerds do. Does that then make me a geek? I don't think I'm a dweeb. But I digress.. Hey, good luck with Physics! Just remember, E=mc2 and mgh and 1/2mv2 and pv=nrt!
Does it matter where one starts - center, as opposed to the sides? Is there more than once correct solution or only one?
I gave my 12 year old genius son (also autistic) a Sudoko puzzle book a couple weeks ago. He seemed mildly interested in it.
Is anybody familiar with the 6 x 6 grid whereby you number the squares from 1-36 by using the Knight's move in chess?
yeah, committing to a square like that won't work...you have to keep in in context with the entire puzzle.
A lot of the time there will be an easy place to start. If you have 3 3x3 squares in a row, for example, and the first two already have 7s in the middle and bottom rows respectively, and the third one has no 7 but only one blank space on its top row, then that space is a 7.
and most of the time (99.9%) there is only one solution. though my stepdad and I managed to come up with 2 completely different solutions for the same puzzle once!
-Emily
Samurai Sudoku. It's absolute Sudokumania bliss!
It's also far easier if you remove the whole false relationship with mathematics - it has nothing to do with them just because most puzzles are set up with numbers (they can be anything from letters to shapes to colours).
Actually shoku, sudoku is very mathematical. Even if you take away the numbers, you still have nine distinct symbols and a definite set of rules, which is enough to have math do the hard work for you. I spent most of last year writing general solutions to constraint-based problems like this for a math/computer programming class. Combinatorics (the math of countable objects) and formal logic (logic based on symbol manipulation, which can be boiled down to arithmetic) have lots to say about games like sudoku. For example, when choosing which number to place next, what number will take the least amount of consideration? Generally speaking (and assuming your partial solution is correct,) it's whatever number has been used most often in the solution; if you're placed eight 5s and less of everything else, then there will be only one available choice for where to put the last 5, whereas the rest of the numbers require consideration of a larger number of choices to determine the correct placement. Further, you can ignore the 'each row, column and square has 1-9' rule and instead focus on the simpler concept of not having doubles in any row, column or square, because in the confines of sudoku these two rules imply exactly the same thing.
~Joe
o//~ Livin' like a bug ain't easy / My old clothes don't seem to fit me /
I got little tiny bug feet / I don't really know what bugs eat /
Don't want no one steppin' on me / Now I'm sympathizin' with fleas /
Livin' like a bug ain't easy / Livin' like a bug ain't easy... o//~