How do you play Numberlink?

Numberlink

1. Connect pairs of the same numbers with a continuous line.
2. Lines go through the center of the cells, horizontally, vertically, or changing direction, and never twice through the same cell.
3. Lines cannot cross, branch off, or go through the cells with numbers.

What is a Numberlink puzzle?

Numberlink is an incredibly simple puzzle concept: draw lines in a grid that connect each pair of numbers. Numberlink is an incredibly simple puzzle concept: draw lines in a grid that connect each pair of numbers. While the rules are easy to understand, the puzzles can be difficult to solve without some experience.

Is Numberlink np complete?

Computational complexity As a computational problem, finding a solution to a given Numberlink puzzle is NP-complete. NP-completeness is maintained even if “zig-zag” paths are allowed. Informally, this means paths may have “unnecessary bends” in them (see the reference for a more technical explanation).

What is a number link?

In mathematics, the linking number is a numerical invariant that describes the linking of two closed curves in three-dimensional space. Intuitively, the linking number represents the number of times that each curve winds around the other. The linking number was introduced by Gauss in the form of the linking integral.

What is a shikaku puzzle?

Shikaku shape Puzzles Shikaku, or in Japanese Shikaku Ni Kire, is also called Rectangles, Divide by Squares or Divide by Box. The goal of this number puzzle is to divide the grid into rectangular and squared blocks with numbers that represent the areas of those shapes.

What is NP complete with example?

NP-complete problem, any of a class of computational problems for which no efficient solution algorithm has been found. Many significant computer-science problems belong to this class—e.g., the traveling salesman problem, satisfiability problems, and graph-covering problems.

How do I turn a phone number into a link?

How to Create Phone Number Links for Mobile Devices

1. Make sure all phone numbers listed have area codes.
2. Highlight the entire phone number.
3. Click the link icon.
4. Click the “External” radio button.
5. As shown in the image to the right, type in the tel: (telephone number)
6. Click “Ok”
7. Click “Save & Test”
8. Click “Submit”

How do I turn a phone number into a URL?

You can make a phone number a clickable link that opens a dial dialog on smartphones and mobile devices. To get started, highlight the number and click the Link button. Next, change the Protocol to and paste the phone number into the URL box, with the prefix “tel:+” as shown below. Click OK when finished.