Sudoku Bear with Coffee Mug Christmas Ornament From Kurt Adler, Item #W30278 Embellished with glitter Measures approx. 4"H x 3"W Material(s): Resin Comes ready-to-hang with a red ribbon cord』
タイトル『 Personalized Christmas Ornaments - Sudoku People Ornament >
>
price：
Personal Creations
『Acknowledge their greatest passion with a unique and colorful ornament. We personalize with any name, up to 9 characters. Comes ready to hang with a ribbon. Resin. Measures 4 1/2"H.』 タイトル『 Personalized Snowman Playing Sudoku Ornament >
Core2Duoノートレビュー 's review ("It's fun!") 『My daughter bought this with her own money and is very happy with the purchase! She has always loved puzzles and logic challenges, but had never done a sudoku-on-paper to completion (on her own, or with help). Yesterday when she received this Sudoku puzzle game, she did one right away (independently), and says she finds these "much easier" (and more engaging) than those on paper. (I think that the large, easy-to-read tiles make it "easier" as well as the hands-on quality which make it both a kinesthetic and visual task.) The only complaints I have are that the tape used in packaging left a few sticky places on the underside, and there are no replacement tiles (should you loose one); it comes with the exact amount needed to fill the board. Of course, having the exact amount and no extras, also helps her see which ones still need to be "used" in the puzzle as she goes along, so this may be a help in it seeming "easier," as well. Although the box says, "the go everywhere game," I would not consider it suitable for travel, because if you place the board on too much of a slant the tiles slide out of place. This is not a problem for us, as we intended to use it at home. It has a handy storage compartment underneath and clear plastic cover to help protect a puzzle in progress. In short, we are pleased with the purchase and find it very satisfying.』 『Puzzled by Sudoku' Work out your solutions on this 3-dimensional game board featuring tons of double-sided tiles. Select one of 50 puzzles from the booklet and then get busy solving the puzzle.
Game set includes official 3-D game board grid, 81 double-sided number tiles, built-in tile storage compartment and 50-puzzle booklet by Pappocom.
Core2Duoノートレビュー 's review (Great Educational Toy) 『My son started with sudoku 4x4 Jr. Then continue with this Sudoku 5x5. It is really educational, fun and recommended for all 5-6 years olds. Excellent for travel.』
(cfloyd_suduko 5X5) 『Excellent delivery and condition! My 11 yr. old grandson really enjoys this toy, finds it challenging and also has played with this item in school. My only complaint is that is not as durable (paper product)for long term use as I would like.』
(Kids can Sudoku too) 『My daughter (and her classmates) love this game! The different levels allow success at the beginning and challenges once the child figures out the game. I have bought several more as birthday gifts!』
(Great puzzle for on the go.) 『I love this game. It is much nicer than regular paper and pencil versions. And it is great to take with me when I'm outside with the kids or during LONGGG bathtimes watching the kids. Even though it is a 5 x 5 puzzle, it still has three challenges per puzzle (rows, columns, and color grouping). If you are not great at sudoku, this is a great one to start with to boost your confidence. As My kids get older, I will teach them how to play.』
(Great for the Classroom) 『My students love sudoku puzzles, but the 9 x 9's are hard for the average second grader. So this is a perfect starting place. They experience success as they move up through the levels of difficulty. It makes a great gift for people who like to give "educational gifts" to their children or grandchildren. It travels nicely, too. It would keep children occupied in the car. Buy it! I've bought 5 so far!』 『Just like the traditional game, Sudoku 5 X 5 play begins with several given numbers. Players face the challenge of filling in the rest of the grid. But there's a catch -- each row, column and color-coded region can only contain one instance of each number. It's harder than it looks! Provides hours of addictive brain-building fun.』
price：$9.95
CreateSpace
Usually ships in 24 hours Core2Duoノートレビュー 's review (Challenging Entertainment) 『I asked my mom today what she wanted for Christmas and she said another book like this! I bought this one for her birthday in March and she just finished all of them last week. I am always looking for new puzzles for her because she has done everything at the stores. This book is definitely for those who desire a challenge.』
(Best sudoku variant author) 『Once again am loving it! Am working my way to getting all of DJape's books. Will even try new variants with him, when other authors have left me lukewarm (eg hitori). These puzzles have SOUL! Am putting in a new order now as I've finished all the ones I have. Have discovered zeros (I like it when he puts a few newies into the mix) and after thinking I'd finally over stepped my match, am loving them. Strong encouragement to produce more of these and also my faves - the samurai killer jigsaws. Great paper quality, always new surprises in patterning and emerging strategies. Will only do other authors now when I've run out and am desperate. Thanks DJape. My addiction is being well fed.』
(Still working on it) 『It hasn't stumped me yet, but I'm enjoying it. And it also contains a new type of Sudoku I've never seen before (down, across, and diagonal).』 『Third book in the Samurai Sudoku series by Djape. ALL PUZZLES in this book are NEW, previously unpublished. Similarly to volume 1, this volume contains 80 classic Samurai Sudoku puzzles plus 20 diagonal (Samurai X) puzzles. The final 5 puzzles are a surprise! Samurai Sudoku puzzles by DJAPE appear weekly in The Washington Post and in The Washington Express newspapers.』
price：$2.39
HarperCollins UK
Usually ships in 2 to 4 weeks 『
This fifth and toughest Times Killer Su Doku book will test readers' skills to the limit, adding the challenge of arithmetic and taking Su Doku to a new and even deadlier level of difficulty. The puzzles use the same 9x9 grid as Su Doku but with an added mathematical challenge. The aim is not only to complete every row, column, and cube so that it contains the digits 1-9, it is also necessary to ensure that the outlined cubes add up to the same number. With 150 new Tough and Deadly Killer Su Doku puzzles, there is no chance to ease yourself in with easy puzzles. For those who like to live dangerously and push beyond their mental comfort zone, steel yourself for the toughest collection yet.
price：$4.80
Cambridge University Press
Usually ships in 24 hours Core2Duoノートレビュー 's review (A Martin Gardner Classic) 『An excellent collection of Martin Gardner's columns from Scientific American. I have several of Gardner's books, and this particular series is the best production quality of the ones that I own.』
Mathematics sometimes seems a matter of abstract symbols and calculations. Not in this book. Here it comes to life. Every chapter is filled with things to make or draw or think about. As you do these things, you learn what is going on and develop mathematics on your own.
Gardner leads off with the binary system and binary sorting, illustrated by use of a sorting deck similar to the commercial McBee Keysort system. Next, group theory is introduced via a game and illustrated by braiding leading to the "Dirac Belt Trick." This trick is the basis for a way to connect hoses and cords to rotating machinery and to avoid tangles. Dirac was interested in this trick because of its implications for the spins of electrons, a matter that is still a mystery to me, though I see how the trick works by trying it out as suggested.
Lewis Carroll's puzzles are here, with mazes and word ladders. Gardner shows how cutting and folding paper help you understand angle sums and dissections of figures. The references for the cutting and folding chapter include the recent work of Eric and Martin Demaine, Joseph O'Rourke, Greg N. Frederickson and others, useful if you want more technical details.
Senet opens the chapter on board games. This chapter winds up with a history of Reversi (and its kin Othello) which shows how tricky it can be to discover the origins of "new" games. A letter Peter Michaelsen sent Gardner in 1987 suggested Chinese origins for versions of this game, but those have yet to be traced and confirmed. Here is something to look into.
How can circles or spheres be packed most efficiently in a given area or volume? Sphere Packing is one of the greatest puzzles and most beautiful areas of geometry. Kepler conjectured that a hexagonal close packing is the densest packing in space - and Thomas Hales gave a proof in 1998, using computers to show that other arrangements are less efficient. From Martin Gardner's comments about this proof and the proof of the Four Color Map Theorem and the nonexistence of an order 10 projective plane (see Chapters 10 and 14 of this book), I see that he has doubts about trustworthiness of proofs that depend on computations. Calculations can go awry, but the drive to check and recheck important results works for computer work as well as it does for standard proofs. Hales has given a convincing account of his efforts and those of others to check his proof of the Kepler Conjecture (See [...]).
It is important to reexamine accepted proofs and calculations. An example from this book shows why. Percy Alexander MacMahon considered puzzles involving the 24 colored squares you get by quartering squares by their diagonals and then coloring them in every possible way using three colors (say, black, gray, and white). It is a nice exercise to count these 24 possibilities. Martin Gardner takes these squares up in Chapter 16. A rich array of possibilities arises if you try to arrange these squares in a 4 x 6 rectangle so that the outer edge is black and so that the colors match where the squares meet.
This is a reasonable challenge, not too easy and not too hard. Once you have succeeded, you might wonder how many different arrangements of this sort there are. From the first edition of this book, I recalled that there were roughly 12,000 such solutions to the 4 x 6 rectangle. This is based on a hand count of 12,224 made by Federico Fink of Buenos Aires in 1963, followed by computer search done at Stanford in 1964 by Gary Feldman, which gave a total of 12,261, a small increase possibly from a more systematic job. In 1977 Hilario Fernandez Long of Buenos Aires wrote Gardner to report a second computer search that found 13,328 solutions for the 4 x 6 rectangle. This raises concerns. How to square these varying results? For me, the more recent result being larger by 8% suggests that certain possibilities were overlooked, or that some duplication has arisen. Questions arise when there are discrepancies, as we see here. I am not completely satisfied with any of these numbers yet. I await further evidence. Whether the work is done by computer or by hand we look for confirmation by agreement with earlier work. Perhaps some of you will sort this out. The task is not as unmanageable as it might seem.
If the border of the 4 x 6 rectangle of MacMahon squares is black, then there must be a bar of four squares meeting with black edges and joining the sides of length six. Gardner cites T. H. O'Bierne proof of this. Looking further, toward the end of Winning Ways for Your Mathematical Plays by Berlekamp, Conway, and Guy there is a list the 20 possible patterns for the black edges on the interior of a 4 x 6 MacMahon rectangle whose edges are black. Using this as a basis, the enumeration of all such rectangles would be simplified. See Volume 2 of the 1982 first edition of Berlekamp, Conway, Guy or Volume 4 of the second edition (A K Peters, 2004).
A neat surprise is the slice of a torus that gives two intersecting circles ( Chapter 12, Problem 4). I wondered how to show that these seeming circles were really circles. A bit of searching led to Eric Weisstein's MathWorld article on the Torus ([...]). Fairly far down on this MathWorld page you will see how these circles look at a point on the torus where the two Villarceau circles (as they are called) lie in separate planes. Weisstein also cites Coxeter's Introduction to Geometry, a beautiful book and the subject of Chapter 17 of the book under review. In Coxeter's book you will find an analytic proof of the properties of these circles (and a citation of Gardner's column).
In Chapter 9 you meet Victor Eigen, the first mathemagician, a word Gardner coined for practitioners of magical tricks based on mathematical principles. The Gilbreath Principle is explained here, the basis for many magical effects. A long-awaited book by Persi Diaconis and Ron Graham from Princeton University Press is expected to be the word on mathemagic.
I had a hand in the work on this new edition, checking some developments and redoing a few illustrations. I thought that there would be few surprises when I saw the book itself, but I found many things that I had missed earlier or had not thought about enough. For example, the discrepancies in the MacMahon squares counts mentioned above. The good news is that there are things to be done and thought about, and that is the whole idea of these books!
Get a copy and go for it.』 『Packing spheres, Reversi, braids, polyominoes, board games, and the puzzles of Lewis Carroll. These and other mathematical diversions return to readers with updates to all the chapters, including new game variations, mathematical proofs, and other developments and discoveries. Read about Knuth's Word Ladders program and the latest developments in the digits of pi. Once again these timeless puzzles will charm readers while demonstrating principles of logic, probability, geometry, and other fields of mathematics.』 『Martin Gardner returns to charm readers with the latest on packing spheres, Reversi, braids, polyominoes, board games, and the puzzles of Lewis Carroll. Read about Knuth's Word Ladders program, new ways of finding the digits of pi, and much much more.』
Core2Duoノートレビュー 's review (So-so game) 『This game is hard to use. If you want pencil marks, it just puts all of them in. This basically gives you the answer as all you have to do is look for a square with only one number in it. I'm also disappointed that you have to insert the CD to play the game. This means that I will not be using it much. The only thing that saved the rating is the Mahjong, which is the main reason I bought it. Valusoft's earlier versions of Mahjong were better and easier to use in my opinion. There has to be better versions of Sudoku and Mahjong available.』 『Are you ready to twist your mind - can you crack thecode?Product InformationEnjoy two challenging puzzle games included in this one collection. Theaddictive game of Sudoku Unlimited puts a whole new twist in puzzlesgames. Discover the magic of Mahjongg in the Ultimate Mahjong 15game that will keep you and the entire family entertained for hours.Product OverviewUltimate SudokuWhat is Sudoku you ask? Sudoku is an addictive puzzle game that has takenthe world by storm! Appearing in newspapers across the globe millions ofpeople are playing this mind-bending puzzle every day Best of all youdon't need to be a math whiz to play this game - you just need a little luck anda lot of logic! Select a number (1-9) and place your number within thegrid. Sounds simple right? Your number can only appear once in eachrow column and 3x3 box! It's not as easy as it looks!Features: Create your own puzzles for an infinite number of challenges. Select from four game modes from easy to impossible using numbers or letters. Solve your puzzles on screen or print them to solve on the go. Impress your friends using the Solution Helper to solve newspaper puzzles.Ultimate Mahjongg This classic game just got better! With all new ways to play plusthousands of backgrounds and an infinite number of tile sets this addictivegame will keep you challenged for hours! Discoverthe Magic of Mahjongg - the Ultimate Mahjongg 15 Way!Features: 400+ Challenging Layouts - Challenge your matching skills with more than 400 3D Mahjongg layouts. 2000+ Exciting Backgrounds - No one gives you more game backgrounds than Ultimate Mahjongg! 450+ Entertaining Tile Sets - Hundreds of themed tile sets add to the Mahjongg matching fun. We've got the most tile sets! 15 Fantastic Ways to Play! - Play your favorite classic Mahjongg game or learn a fun new variation. Solitaire Two Player Memory Shisen Waterfall』
『Create your own puzzles for an infinite number of challenges. Select from four game modes from easy to impossible, using numbers or letters. Solve your puzzles on screen, or print them to solve on the go.』 タイトル『 CDRS1530 Mega Sudoku Plus >
>
price：$0.01
Cosmi
『Get hooked on the latest craze and join millions of loyal fans. Mega SUDOKU Plus provides plenty of brain stimulating fun with its endless computer-generated puzzle variations, multiple levels of difficulty, exciting options and printable puzzles. With logic and a little luck, you can solve any puzzle including those found in newspapers. If you get stuck, let the computer provide hints or provide entire puzzle solutions with the click of a button. For added excitement, play against the built-in timer and get the fastest time to be added to the list of high scores. Make Sudoku puzzles for kids, too. Four grid sizes (9x9, 8x8, 6x6 and 4x4) Kid-sized puzzles test your child's logical reasoning skills 20 different themes or make a new theme from scratch Normal play or ability to pencil in and confirm answers Computer hints or complete puzzle solutions Save games and undo moves System Requirements - Microsoft Windows 98SE, ME, 2000 with SP4, XP, 64 MB RAM, CD-ROM drive』 タイトル『 Super Tile Sudoku >
>
price：
Sli Fi Media
タイトル『 AFK Sudoku downloadable Software >
>
price：
AFKSoft
『The logic game that everyone is playing, join the craze with this easy to use and feature packed version of Sudoku! AFK Sudoku Features: * Virtually unlimited generated proper Sudoku puzzles * Puzzles can be solved with logic, no guessing needed * Brute force solver to solve any valid sudoku * Verify, hint, sanitize and solve puzzle options * Pencil marks - input your own or auto generate them * Option to automatically update the marks as you solve * Quick values and pencil mark entry modes * Custom boards - input your own sudokus * Batch puzzle generator - generate 'em as you recharge * Browse and load batch generated puzzles * Load and save unlimited puzzles * Copy puzzles from/to the clipboard * Beam puzzles to other PDAs * Receive beamed puzzles from others * Undo and redo function * Fully configurable color schemes * Load and save your color schemes * Various ways to visualize the values/marks * Timer (need to get coffee? pause it!) * High score listing』
The scallop of large satisfactory ! northern countries and - [ of how much ] botan shrimp are ! tightly.
getting to know the technique of motorbike expensive sale -- Ta -- if -- -
>
>
>
>
