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One of my better games: Odd

February 11, 2010

I invented this a few years ago, on a lark, without playtesting or more than a few seconds consideration. But it turned out to be one of the best ones I’ve designed, out of hundreds. I wish all games were this easy. Bonus points for being the simplest of all my games.

Odd is a game for two players, played with black and white stones on this initially-empty board:

Board

Definition: A Group is a set of connected, like-colored stones on the board, containing at least 5 stones

Rules

  1. Players take turns. On your turn you must place either one black stone or one white stone onto any empty space.
  2. The game ends when the board is full. Player 1 wins if there is an odd number of groups on the board at that time and Player 2 wins otherwise. Important: when counting groups, make sure to count groups of both colors. Example:
Example_game

In the picture above, there are 3 groups (one white and two black), and because there’s an odd number, player 1 wins.

Note: The game can be played on larger boards and in that case you should change the minimum number of stones in a group. A good rule of thumb is that the minimum group size should equal the number of cells on one side of the Hex board.

Printable rules and boards for paper-and-pencil play

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From → Game Designs

8 Comments
  1. russ permalink

    There’s a typo in the rules: “two groups on it, each of size 6″ should have “size 5″. :)

  2. Nick Bentley permalink

    Oops. Thanks. I’ll fix it soon(ish).

  3. Nick Bentley permalink

    fixed

  4. David permalink

    I sure wish your link to the printable board worked. This game sounds intriguing.

  5. David permalink

    Never mind my last. I noticed that your broken link referenced BGG, and found the page (and links) there. I look forward to trying it tonight!

    • nickbentley1000 permalink

      Great! If you have feedback, good or bad, I’d love to hear it.

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