# 9 Dot Puzzle 4 Lines

**In this puzzle, you must connect all the dots using only 4 straight lines;**

**9 dot puzzle 4 lines**.
The nine dot problem is a classic lateral thinking exercise that gained widespread popularity in the 1970's and 80's.
In this way, you are able to draw 4 straight lines without lifting pen and visited all 9 dots.
But this is a 9 dot puzzle not a 9 point puzzle.

The challenge is to draw through a 3x3 grid of 9 dots using only 4 connected straight lines. Like that, but i need to join all the dots without lifting pen/pencil, and your only aloud a max of 4 lines! This is just one of them.

Participants are presented with a set of dots arranged in a 3x3 grid and challenged to connect all nine dots, without lifting their pencil from the paper, using the fewest possible number of straight lines. Each line can be as long or as short as you like; For example, start at the top right hand and go straight down well below the bottom dot, so that you can go back up at an angle through the two dots replaced by hyphens below:

Is there some general formula to find the minimum number of lines for a given number of dots? A solution is displayed below (spoiler alert): How do you join a square of 9 dots, with 4 lines, without lifting your pencil?.

You begin with any corner dot. If we label the dots from top left to bottom right 1,2,3,4,5,6,7,8,9 then. Connect the 9 dots using four straight lines without lifting the pencil from the paper.

New lines must be connected to the previous one). I only have 2 solutions here. The fact that the dot has some height leads to this solution that solves the puzzle using 3 line segments.