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Pi Day 2010

Pi Day is a celebration of the number π that occurs every March 14 (3.14...). Math geeks all over the world celebrate their math-geekiness on this day with pie-eating contests, recitations of the digits of pi, and occasionally fundraisers where math faculty get hit in the face with pies. At Brainfreeze Puzzles we celebrate Pi Day - how else? - with a Sudoku puzzle. |

Our Pi Day Sudoku puzzle is free to use, publish, and distribute. You can download the printable PDF version with rules or high-quality publishable TIFF version of just the puzzle and use it however you see fit. Rules: Fill in the grid so that each row, column, and block contains 1-9 exactly once. This puzzle only has 18 clues! That is conjectured to be the least number of clues that a unique-solution rotationally symmetric puzzle can have. To celebrate Pi Day, the given clues are the first 18 digits of π = 3.14159265358979323... |
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Want more puzzles like this one? Send in your solution to the 2010 Pi Day Sudoku puzzle for a chance to win an autographed copy of our lastest book, NAKED SUDOKU. One entry will be picked at random from all correct entries received by June 1, 2010. Send entries to:
Brainfreeze Puzzles, 301 Ohio Avenue, Harrisonburg, VA 22801 |

Get your college newspaper to pick up our Sudoku Syndication Program and win a FREE AUTOGRAPHED BOOK! Brainfreeze Puzzles provides daily and weekly Sudoku puzzles to college newspapers throughout the country. If your college newspaper does not yet carry Sudoku, ask your newspaper editor to contact us at filora@brainfreezepuzzles.com for pricing information. More information about our Sudoku syndication packages is on our Syndication Page. If your newspaper joins our program and mentions your name and email address, we will send you a free autographed copy of our latest book NAKED SUDOKU. |

Was this year's puzzle too easy for you? Try this freezier one instead. (No π theme, though.) |