Opinion
Consider 16 cards  consisting  of  the  ace  through 8 of hearts and the ace through 8 of spades. You are allowed to arrange the cards as you wish. Your opponent chooses a  number  between  1  and  8.
Opinion
In the spirit of Gomoku, two people play a version of the classic paper-and-pencil game tic-tac-toe but on an infinite checkerboard. In it, a player wins by getting four pieces in a row — vertically, horizontally, or diagonally.
Opinion
In this cooperative game, two players want to meet each other in a graph as quickly as possible.
Opinion
A group of people is sitting around your dinner table with one empty chair. Each person has a name that begins with a different letter: A, B, C . . . Because you love puzzles, you ask them to rearrange themselves . . .
Opinion
We begin simply, with a 60-minute clock that counts only minutes, from 0 to 59. The alarm can also be set from 0 to 59 and will go off when the clock reaches the same value.
Opinion
Imagine a 500-square-by-500-square red/black ice checkerboard with walls along all four edges.
Opinion
There are objects of four types and n people, each with a budget of \$99. The objective of each one is to acquire three objects of the same type (any type) before anyone else does.
Opinion
You are given two bags, each containing some number NumPerBag of flares. You know there are NumBad flares in one of the bags but not which bag. The other bag has all good flares. Each time you test a flare, you use it up.
Opinion
Consider the following game (first posed to my close friend Dr. Ecco) played among several entities. Each entity Ei has a certain force Fi and a certain wealth Wi.
Opinion
A popular logic game involves figuring out an arrangement of people sitting around a circular table based on hints about, say, their relationships. Here, we aim to determine the smallest number of hints sufficient to specify an arrangement unambiguously.

### Shape the Future of Computing

ACM encourages its members to take a direct hand in shaping the future of the association. There are more ways than ever to get involved.

Get Involved