cancel
Showing results for
Did you mean:
cancel
Showing results for
Did you mean:

Community Tip - Need to share some code when posting a question or reply? Make sure to use the "Insert code sample" menu option. Learn more! X

20-Turquoise

## Connect all dots by one stroke.

Puzzle only to fun. Question graphs are made by using Mathcad programing.

For exsample of Level 4.

For the exsample of Level 10.

And this is the problem I find in WWW. Level 7.

5 REPLIES 5
20-Turquoise
(To:ttokoro)

This puzzle is very difficult for students to solve.

Therefore, even using Mathcad, it is too hard to solve.

( This is only a puzzle to fun! )

Tokoro

24-Ruby V
(To:ttokoro)

@ttokoro wrote:

This puzzle is very difficult for students to solve.

Therefore, even using Mathcad, it is too hard to solve.

Not even if done by brute force using recursion?

BTW, whats the meaning of n (0,1,2,3) in your screenshots?

24-Ruby V
(To:Werner_E)

Here is a brute force solution.

The starting point is manually set. No error check is done yet as to if the starting point is an existing point 😉

It should be easy to write a wrapper which cycles through all possible starting points trying to find one which yields a solution.

Its just a quick hack and quite inefficient. Especially when the layout does not allow a solution the sheet takes quite some time to realize that 😉

There may even be an error in my recursion?

20-Turquoise
(To:Werner_E)

m=20

n(0,1,2,3) only choses the position of vacancy point on the m*m points graph. ( In this figure, the location of  star points.)

Showing level 4(m=4) for example and try to level 7(m=7).

Elementary and junior high school students try to answer all from (a), (b), (d) and finally (c). This is my strategy of my puzzle class to fun this puzzle.

20-Turquoise
(To:ttokoro)

Blue dots are 25. Red dots are 23. Therefore you can't connect all dots by one stroke.
This is odd and even puzzle. 24 and 24 or 25 you can.

Announcements
Top Tags