Description:
Puzzles, problems, and quizzes.
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Help me solve??
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I am a web developer trying to reverse engineer a seemingly simple password encryption scheme. I have spent a few hours looking at the data and it seems like what I need now is a fresh pair of eyes and someone with a logic puzzle mindset. I assure you, this is not a hacking project. I need to be able to call on a web API that is undocumented and without source so I am trying to replicate what it already does. It is simple to see what is being done except for this password obfuscation. I have ruled out all the difficult encryptions (MD5, etc.), and it doesn't appear to have any salt or be affected by username or anything else I can see. If anyone has any ideas it would be of great help!... more »
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Seven Clues for Seven Weddings
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(Here's a puzzle I composed several years ago. I don't think I've presented it in rec.puzzles before.)
Seven men were best of friends, so when each got married he chose
one of the other six to be his best man and a different one of them
to be his usher. From the clues determine for each wedding, the names of... more »
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Enigma 1743 - Order, order!
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Enigma 1743 - Order, order!
New Scientist magazine, 06 April 2013.
By Susan Denham.
I have written down a list of four positive
whole numbers in increasing order. They are
all less than 100, and no two of them have a
common factor greater than 1. If I write the
numbers in words, then each begins with a... more »
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Technical accuracy in crossword puzzles
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I was doing a crossword puzzle the other day, and the clue was ,"2.2 pound weight unit" and the answer was "kilo." This is not technically accurate in 2 senses.
First, "kilo" is a prefix meaning 1000. A "2.2 pound weight unit is a kiloGRAM, not a kilo.
Second, in some contexts, for example cooking, kilo means 2.2 pounds. A... more »
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Vampire hunting at the comedy club
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There were 4 stand-up comics performing at the Chuckle Hut last night. Can you identify each one's first name (one was Carla), last name (one was White), joke topic and order of performance -- oh yes, and which 2 were vampires?
1. A vampire did not perform last.
2. Dave Green performed sometime after the comic who joked about game shows.... more »
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Enigma 1742 - Chip-chop
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Enigma 1742 - Chip-chop
New Scientist magazine, 30 March 2013.
By Adrian Somerfield.
I have a seven-figure number that uses seven
consecutive digits in some order. Starting at
the left and deleting a digit leaves a six-
digit number, then deleting the right-end digit
leaves a five-digit number, then deleting the... more »
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Revolution Puzzles
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I was playing around on my computer and came up with a new type of puzzle, at least I haven't seen any like it before. The puzzle is explained in these instructions:
[link]
Puzzles:
1. [link]
2.
[link]
3. The same solid from two different views:... more »
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