Ivo Beckers
• Member for 7 years, 6 months
• Last seen this week
• Aabenraa

I know the answer is already given but I'd like to show an easy explanation of why the 2 planes are coplanar. Take this image: Consider two pyramids sitting side by side, and draw a line between ...

Yes there is a solution with a very simple strategy: Start in (1,1). Always go the right most square that's unvisited I'll try to illustrate it. I checked it by hand on an 9x9 board and a very nice ...

I'm stuck at the moment but this is what I got so far: Rotating and flipping all texts correctly should give: Encoding Extreme #7 I think the time has came. I need you to help me This is going ...

It's Because

They do exist. And they are actually called Brahmagupta Hexagons. An example is this: Which I took from this paper which has a lot more info on them

Given any position you know that has 20 moves (like the Superflip) just do one move towards the solution and you have a position that requires 19 moves.

The song is clearly supposed to be Which is a well known song by With some imagination it is pronounced the same as

This is how:

You can do it like this: The cut starts right in the center of those sides.

By using the compare tool Beyond Compare this appeared: So she is hiding

To illustrate the puzzle I made the following image: All angles I entered can be simply calculated using the fact any n-gon has a total of $180 + (n-3) \cdot 180 °$. Now let's call the intersection ...

If I'm not mistaken $P(\text{to win car}) = 1 - P(\text{only draw Cs}) - P(\text{only draw As}) - P(\text{only draw Rs}) - P(\text{only draw Cs or As}) - P(\text{only draw Cs or Rs}) - P(\text{only ... View answer Accepted answer 15 votes Such a cube The first thing I noticed that this essential the same question as Can you rotate a unit cube in such a way that the height to the table of the corners form an arithmetic sequence for ... View answer 14 votes It will look like this: Because in a single row you overlap the first two images and the third is the result of that, with double lines being removed. View answer Accepted answer 14 votes It seems to be x3, +4, x5, +6, x7, +8 and so on View answer Accepted answer 13 votes Yes, I found this video on YouTube that has this "perfect game". Terrible music by the way https://www.youtube.com/watch?v=prWG1OFgVqg View answer 12 votes Not a definite answer but I narrowed it down to 2 possibilities. It's either In this case or the second possible answer is Because View answer 11 votes How: View answer Accepted answer 11 votes I must admit that I found It with google but this is the solution: View answer Accepted answer 10 votes Note: 51.5625 = 825/16 To calculate the sum for a given$n$we can do$\frac{n \cdot (n+1)}{2}$. Then we need to have that$\frac{n \cdot (n+1)}{2} - \frac{825 \cdot (n - 4)}{16}\$ is a number that can ...

First assume that this is possible. Look at the first row. It has 2014 available spaces. This means that there are at least 2014 % 4 = 2 pieces that are 1x4. The second row now has 2015 - 2 = 2013 ...

Not really an answer but I'd like to add my thought process to this

That specific one looks like a Varikon tower to me. See http://www.cs.brandeis.edu/~storer/JimPuzzles/MANIP/VarikonTowers/VarikonTowers.pdf http://www.jaapsch.net/puzzles/tower.htm

The solution is: ┌────────────────────────┐ │ O ~ ~ ~ Λ ~ < > │ 4 │ ~ ~ Λ ~ x ~ ~ ~ │ 2 │ O ~ x ~ x ~ < > │ 5 │ ~ ~ V ~ V ~ ~ ~ │ 2 │ ~ ~ ~ ~ ~ ~ ~ Λ │ ...

I think the below picture is your intended solution where red dots are where the fuses are lit and black where they die out. however, the error is on the pink dot because at that point 2 sparks need ...

I'm not 100% percent sure but I think it's the following

As pointed out by ghost_in_the_code is a solution, however he doesn't state why it's the only solution. To show it is the only solution we have to realize that what is asked is how many vertices are ...