we turn coffee into puzzles

Pi Day 2009

What is Pi Day?

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.

Free Pi Day Sudoku puzzle

Our Pi Day Sudoku puzzle is free to use, publish, and distribute. You can download the printable PDF version or high-quality publishable TIFF version and use it however you see fit.

Rules: Fill in the grid so that each row, column, and jigsaw region contains 1-9 exactly once and π three times.

2009 Pi Day Sudoku Contest

Want more puzzles like this one? Send in your solution to the 2009 Pi Day Sudoku puzzle for a chance to win an autographed copy of our book, COLOR SUDOKU. One entry will be picked at random from all correct entries received by June 1, 2009. 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 book COLOR SUDOKU.