Google US Puzzle Championship

Flex your mental muscles

Is your brain feeling underutilized? Not enough mental challenge in your day job?

We can fix that.

Map the outer limits of your intellectual acuity by registering for the Google U.S. Puzzle Championship, a national online competition to identify America's most logical minds.

The top winner receives a spot on the US Puzzle Team and all expense paid trips to Rio de Janeiro for the World Puzzle Championship in October. The top 25 finishers receive prizes as well as the satisfaction of knowing that what they know is well, pretty remarkable.

There's no entry fee. No special equipment is required. And the questions don't favor a specific cultural background. To get a feel for what you'll be up against, try the puzzles below. Solve them and we may have a slot for you in our engineering department (we love logical thinkers). If you'd prefer to see how others tackled the problems, click on the answers link below.

The Google U.S. Puzzle Championship will be held on Saturday, June 16, 2007 at 1pm EDT (GMT-4). The 16th World Puzzle Championship will be held in Rio de Janeiro, Brazil, October 6-11, 2007.

Please read the´┐Żrules and register here before June 14, 2007.

Warm up exercises

Puzzle #1 – Arrow Sudoku
In this Sudoku variation, each circled number is the sum of the numbers along the corresponding arrow path.

Puzzle #2 – Card Trick (Cihan Altay)
14 cards with digits are placed to make a 3x3 grid of numbers. The totals for the numbers in each row and column are given. Pick up two cards and place them back anywhere in the grid (still face-up) so that the six totals become equal.

Puzzle #3 – Point Pairs (Cihan Altay)
Connect pairs of points to make 13 straight line segments so that the lengths are all of the whole numbers from 1 to 13. Each point must be used just once, and cannot be on another line. (The grid is shown only as a guide for measurement.)

Puzzle #4 – First Name Basis (Shawn Kennedy)
Arrange the 16 names into the grid so that each row and column contains exactly one name (one letter per cell in order across or down, with some optional spaces but no other letters not part of the word).

In the example, the words WOOD, INCH, LATE, PUN, TERSE and STEW appear going across; and WILT, NAPS, OCTET, OUR, DENSE and HEW appear going down


Puzzle Answers

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