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Are you a genius? #1 - Coin puzzleRate this:
 
Published Mon 21 May 2007,
9972 Views,
59 Comments
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If you've found your way here from a video site, please let us know how easy/difficult
you found the puzzle, by posting a comment below!
JV
59 Comments
bravo JV...
Hope this makes sense. s=small coin, B=big coin. It can be done in 4 moves.
I don't think it makes you a genius... It makes you pretty quick on the uptake though (which I think is more important *grin*)
As to doing it in 4 goes - I know I tried but I don't think I managed... If you can do it in 4 - why not post a video showing how you're not just a genius - you're smarter even than JV! ;-)
I must say that this was a fun puzzle, and to be quite honest I found it to be much harder than your second coin puzzle JV which I solved in 10 second flat, I think it was the different coins sizez/colours that were throwing me off.
Overall: thank you for the fun mind excercise JV :) Please post if you have more.
As a side note to rubbrbndmn:
Your 4 step solution, as several people have pointed out, is not possible. After your second move, the third stage layout you arrive at looks like this: (s1)(B2)(s2)(B3)(B1) while your fourth stage layout looks like this: (s1)(B3)(B2)(s2)(B1). To put it simply there is no move that the rules allow that would allow you to go from that third stage to that fourth stage. To clarify: when at stage three, you can only move (s1)(B2) or (B2)(s2) or (s2)(B3), since your fourth stage layout has (s1) and (B3) next to eaxt other, it is obvious that we have to move the (B2)(s2) pair. Whichever way you move this pair there are only two possible layouts you can arrive at: (B2)(s2)(s1) _ _ (B3)(B1) OR (s1) _ _ (B3)(B1)(B2)(s2) NEITHER OF WHICH IS YOUR THIRD STAGE, FURTHERMORE THERE IS NO MOVE THAT WOULD ALLOW FOR (s1) and (B3) TO BE TOUCHING EACH OTHER IN YOUR FOURTH STAGE LAYOUT, THERE WOULD ALWAYS BE TWO SPACES BETWEEN THE TWO.
Anyway it seems daft to claim you can do it in 4 moves when the solution given uses 5 moves and your two first moves are exactly the same as the two first moves in the solution given by JV. I suggest you heed JVs advice and listen to the rules again.
1. First start with how the final stage should look like, hence: (s1)(s2)(B1)(B2)(B3). It should be clear that the only way to arrive at this stage, while abiding to the rules, is to move (s2)(B1) in your final move.
2. Following on from this there are only two possible layouts of the second to final stage that allow this move to be made: (s1) _ _ (B2)(B3)(s2)(B1) OR (s2)(B1)(s1) _ _ (B3)
3. I happened to start with the first, and luckily correct, possibility. To get the second to final stage looking like this you could either have moved (B3)(s1) or (s2)(B1), however we just moved (s2)(B1) so it is unlikely that those two coins are moved again to go from the third from last stage to the second to last stage.
4. Following on with this logic, (B3)(s1) can be moved to two places, giving us two possible layouts from the third from last stage: (s2) _ _ (B2) _ (B1)(B3)(s1) OR (s2)(B3)(s1)(B2) _ _ (B1).
5. Again it should be obvious that the first possibility is no good as it gives us no further moves, so lets follow on with our logice using the second possibility as the layout of the third to last stage.
6. By looking at this layout it should be clear that the only sensible move that can be made to move from the fourth to last stage to the third to last stage is moving (s2)(B3), and again the only sensible place to put these coins is in the two empty places between coins (B2) and (B1). So we get the fourth to last stage layout to look like this: (s1)(B2)(s2)(B3)(B1).
7. To be honest at this point I just realised that moving (s1)(B2) to the left end and then doing the same again with (s2)(B3) will give me the original starting layout, and hence the solution (ie simply do all the steps in reverse order). However even if you would not realise this we could follow on with the process and as we just figured out that the move to go from the fourth to last stage to the third to last stage uses the coins (s2)(B3), it should be rather obvious that the same two coins are very unlikely to be the ones moved to go from the fifth to last stage, so we would try possible moves of (s1)(B2) etc etc.
Thats how I got the solution :)
"... NEITHER OF WHICH IS YOUR FOURTH STAGE LAYOUT, FURTHERMORE..."
The typo are the underlined words, I forgot the word 'layout' and wrote 'third' instead of the correct 'fourth'. Sorry for any confusion and I hope the above cleared it up.
it helps to copy and paste this: (B1)(s1)(B2)(s2)(B3) --> 1. (s2)(B3) (B1)(s1)(B2) --> 2. (s1)(B2)(s2)(B3) (B1) --> 3. (s1) (B3)(B2)(s2)(B1) --> 4. (s1)(s2)(B1)(B3)(B2) into notepad so that you can see where the gaps are left
Step 1. Move the 2 rightmost coins to the left.
Step 2. Move the leftmost 2 LARGE coins to the right.
Step 3. Profit
You move the 2 on the right all to the left. oOOoO
You do the same moves again. oOoOO
Move the 2 after the 1st on left.......^ ^...the ones I'm pointing at. Move them to the left.
OooOO
Move the 2 big ones on the right to the left, and there you go. There was a 2 coin space for the last 2 big ones..I'm allowed to move them over the space and over the 3 at the left? Email me at tomsneak@btinternet.com
spaced the coins out, he doesnt say it but it clearly
shows the coins all touching in the start and end to complete it.
On your last move the far right Large coin is too far away from the
small coin you drag with it therefor if you didnt include the spaces
your 4 step solution wouldnt work.
I found he didnt explain the rules enough, it took me longer to realise what i couldnt do than to solve it.
And i have to say JV claiming people are 'genius's' for solving your puzzle is quite cocky.
Or am I wrong?
Interestingly, the 4-move version seems to just be the 5-move version with the first rotation happening in the opposite direction... which makes sense, because you're really rotating a circular pattern, except that there are blocks in there you can't move past. :)
...I think too much sometimes.
contact me to know how this works
its so simple and it is with the Rules. just in TWO MOVES.
What is presented in the video:
A b C d E =>_ _ C d E A b => _ _ _ _ E A b C d =>
_ _ _ _ E _ _ C d A b=>_ _ _ _ E d A C _ _ b =>
_ _ _ _ _ _ A C E d b
Instead if this we could:
A b C d E => C d A b _ _ E =>
C _ _ b d A E => C A E d b
If we would like to make it seem more complicated
we could add a pattern period like:
A b C d E =>_ _ C d E A b => _ _ C _ _ A b d E =>
_ _ C b d A _ _ E => _ _ _ _ d A C b E =>
_ _ _ _ _ _ C b E d A
one or more times (making sure the patter repetition is not noticed! ;-) and then
proceeding with one of the previous solutions! ;-) ;-)
only 2 moves
BTW, it may not be that his sample was large enough, but it also may be that his sample was unrepresenative of the total population and also that his "survey" is biased in the sense that many of these people are out for fun, are drunk, and dont give a fuck about anything with some serious thought.
congradumafuckinlations for making me join. I was initially angry for my time being wasted on this video, but then i read peoples comments and got even more annoyed. It seems like most people who watched this video assumed the coins had to be attached after being moved. Unless your that 1 percentile the demonstration shown was too short to realize that there can be a space between the coins. WHY? Psychologically speaking our DNA are in chains. And for those who solved in less than 6 moves and arguing about it will not find peace in life as they are. And to all you coin solving genius, go do pull ups. cause if you were hanging on the edge of a cliff at Grand Canyon your coins will just weigh you down and make you lose grip.
Hey you know AdGuy always gets the last word! ;)