All Activityhttp://brainden.com/forum/discover/BrainDen.com - Brain Teasers - All ActivityenNew DoorOne wordTue, 19 Oct 2021 17:53:04 +0000<link><![CDATA[http://brainden.com/forum/topic/4948--/?do=findComment&comment=350792]]></link><description>Turn the paper upside down then add.</description><pubDate>Mon, 18 Oct 2021 11:48:25 +0000</pubDate></item><item><title>Harder hats on deathrow version@Plasmid I translated your notation into mine, as far as we are gone, we have same results (excepted some doublets).
I thought about interpolation, too, but I did not go this way estimating there is not enough data.Fri, 15 Oct 2021 20:44:42 +0000New BeginningsOffspringWed, 13 Oct 2021 15:16:58 +0000Harder hats on deathrow versionI also come up with there not being a solution, although admittedly with a bit of hand waving toward the end. Without a computer (or at least not much):
Edit: SMH I just realized that the stipulation of i being in the range from 1 to 2j doesn't hold for all cases (specifically I listed examples of i=3, j=1 that I overlooked) so I would need to rethink if there are more possibilities, or trudge through everything by hand.Wed, 13 Oct 2021 02:38:19 +0000I DARE YOU TO GET THE RIGHT ANSWER.I heard this one a long time ago...and it probably would help to have said they were stranded on an island for a long time...but given that:
Or some variation on that...Mon, 11 Oct 2021 16:29:32 +0000Harder hats on deathrow versionI fear there is no solution.Mon, 11 Oct 2021 13:25:59 +0000QuodrixI have invented a new puzzle called QUODRIX
QUODRIX_T.pdfSat, 09 Oct 2021 16:23:05 +0000KarakiriI have invented a new puzzle called KARAKIRI
KARAKIRI_T.pdfSat, 09 Oct 2021 16:17:28 +0000The liar, the truth teller....and the random answererWhat if I ask A if they feel bad when they lie?...if they can't answer (because they never lie) then they must be the truth teller.
If they answer yes or no then ask B the same question... again if they can't answer they are the truth teller...
If they answer yes or no then C is the truth teller...
SO NOW ASK THE TRUTH TELLER IF (A) IS THE LIER...HIS ANSWER SHOULD SOLVE THE ISSUE !!!Fri, 08 Oct 2021 20:04:09 +0000Climbing StairsSame as rocdocmac
Combinatorics:Thu, 07 Oct 2021 18:15:23 +0000The liar, the truth teller....and the random answererThu, 07 Oct 2021 13:41:51 +0000The liar, the truth teller....and the random answerer(See **/ALL CAPS added to the quoted section.) So the first part of this is correct, and I'm convinced this is the only way to determine who's who, but you only have about a 17-22% chance of asking the Random (or Variable) Answerer AND getting the answers you need from that person. (Not sure I have the percentages right, but it's that ballpark.)
When I'm presented with a logic puzzle, I've always assumed it could be solved, but I think maybe this one has an additional layer: You have to determine whether there is a way to solve it A. everytime; B. just sometimes or C. never. This puzzle falls under B (I'm pretty sure).
So it is a good epistemological lesson: 1. It is possible to determine truth, but 2. it is sometimes by chance and 3. you can increase your odds of getting to the truth by asking the right questions, but 4. sometimes we don't (or can't) have enough information to determine something with certainty. Unfortunately, #4 is often overlooked, even in the field of science.Thu, 07 Oct 2021 11:26:13 +0000Emoji based math puzzle - level easy!Wed, 06 Oct 2021 15:40:00 +0000How many combinations?Reasoning:Sat, 02 Oct 2021 16:55:51 +0000How many combinations?3 pairs of tiles. Each pair identical, 3 pairs different. Keeping the 3x2 layout shown, assuming the tile positions can be individually swapped and individually turned by 180 degrees, how many combinations are there?
Extention: How many combinations if there were 6 unique tiles?Wed, 29 Sep 2021 19:45:29 +0000Can you solve the 1000000 Lightbulb puzzle?without waiting to hear your answer, I think the answer isFri, 24 Sep 2021 22:45:11 +0000people buy me to eat but they will never eat me who am iSilverware...knives forks and spoons.Fri, 17 Sep 2021 01:15:08 +0000Ants on the stick Riddle! Beautiful solution with out of the box thinking and intuition from physicsThu, 16 Sep 2021 21:53:33 +0000Can you solve the 1000000 Lightbulb puzzle?Thu, 16 Sep 2021 21:52:16 +0000people buy me to eat but they will never eat me who am iWed, 15 Sep 2021 11:23:00 +0000Liars and truthtellers one againThanks for finding the problem. I was so sure that if X contradicts Y, they must be in different categories - it did not occur to me that can be both liars.Mon, 13 Sep 2021 18:19:20 +0000Liars and truthtellers one againGiving it a shot at writing with different notationMon, 13 Sep 2021 05:13:41 +0000Liars and truthtellers one againComment on your answerMon, 13 Sep 2021 00:31:00 +0000Looking for a Rottz Games Einstein's Riddle Logic Puzzles 'Expert'I have written a program that emulates the manner in which I manually solve these puzzles. The program works - but only most of the time (regardless of the size of the puzzle). Since there are some puzzles that I cannot solve, I have come up with the following 'reasons':
There is some solving process that I have not yet discovered
There is a bug in some of the puzzles making them not solvable.
There was one puzzle, I believe Hard 283, that I was able to solve, but solving it took a fair amount of effort writing notes, etc - it was not fun. This makes me suspect that I am missing a solving process...
Anyway, if you are an 'expert' at this game, or know someone who is, I would welcome the opportunity to communicate with you. Thanks.Sun, 12 Sep 2021 03:53:13 +0000