Ypsidixit - 2007-10-26 09:33:27
[Kind paint man, I am putting your comment here since I deleted the "paint" entry before noticing you'd commented: my apologies!]

Thanks for taking the paint off our hands. It's good to know that it went to a good home!

Stolen from Egbert - 2007-10-26 09:54:13

srah - 2007-10-26 10:12:03
Ypsidixit - 2007-10-26 10:18:49
Srah: Well, that is lower than my first guess, but I am sorry to tell you it is a different answer, unfortunately.

This a very devilish puzzle, and I could not figure it out. I just couldn't! I had the candy bar in mind and a knife and I was mentally cutting it this way...that way...phooey. I thought I was so good at spatial-type puzzles. Guess not!

At least I can comfort myself with Laura Ingalls' favorite candy...
srah - 2007-10-26 12:59:53
I'm terrible at spatial puzzles. I was just glad to bring it down lower than 6! Now does this candy bar exist in reality as we know it? Because I would like to FOLD it. Maybe if it were a Bit O' Honey.
Ypsidixit - 2007-10-26 13:04:19
Yep, this candy bar is a regular one, like a Snickers. I think your question about folding is an excellent one. But in this case it is not folded (or melted, or otherwise distorted).

Hint: to do this successfully, the kid cannot eat any of it till the end of the week.

I feel a bit guilty 'cause I'm withholding info about a puzzle I myself did not get! But I'll be VERY impressed if someone else figgers it out.
Ypsidixit - 2007-10-26 13:07:32
More info: This puzzle originally involved a gold bar, with the guy being paid 1/7 of it per day. I changed it to a candy bar to make it halloweeny, but that also makes it trickier, 'cause you imagine he eats it--which he doesn't.
Jim Karnopp - 2007-10-26 14:22:55
Do the pieces have to be equal size? if not you could create 7 pieces by making 3 cuts. The first two would cross to make an X the cutting horizontally below the center would give you 7 pieces, but they would be of varying sizes.
trusty getto - 2007-10-26 14:25:42
Zero cuts. I'd just melt it down and then let it harden in equal size pieces.
Ypsidixit - 2007-10-26 14:44:48
Jim: Yes, the pieces of gold/candy bar are all precisely equal in size (dramatic chord on pipe organ).

(Shakes finger) Ah, ah, ah, Trusty G! See above please. No melty! :D
trusty getto - 2007-10-26 15:01:37
Ah, I missed that comment. Dang - it's definitely a teaser . . . . Can you stack the pieces on top of each other once they are cut, and then cut through the stack, counting that as only only one cut? If so, I could do it in three: Cut once at the 3/7 mark. Put the smaller piece on top of the larger piece, lining up the left edges, and cut at the halfway mark of the larger piece. Remove the 1/7 piece from the smaller one just cut, and put the remaining pieces on top of one another, and cut them in half. 3 cuts, 7 equal pieces.
Ypsidixit - 2007-10-26 15:20:22
Ooooooooh, Trusty G you are SO CLOSE!

Using the same *sort of* plan, can it in 2?!

trusty getto - 2007-10-26 15:54:07
Sorry, you've got me stumped, and I'm leaving the proximity of my computer. If I come up with something, I'll leave a comment later :)
Ypsidixit - 2007-10-26 15:57:49
(guilt!) One more hint: the young'un receives an additional 1/7 worth of chocolate every way or the other.
Ypsidixit - 2007-10-26 15:58:50
Remember the old puzzle about the chicken, the corn, the fox, and the bridge? You know, how do they all get across without eating each other?'s sorta like that.
meredith and karen - 2007-10-26 17:17:51
hallo - isn't it just one cut? because it's one seventh per day, so the minimum number she should make to give him one seventh is one cut.
Ypsidixit - 2007-10-26 18:28:57
Meredith and Karen, yes, you are right-it could be one cut per day--but then that would make 7 cuts for the whole week, unfortunately.

Might it be possible to make it in 2 cuts? And maybe a little creative shuffling...?
Jim Karnopp - 2007-10-26 19:02:39
Cut off a 1/7 piece a 2/7 piece which would leave a 4/7 piece. day 1 1/7 day 2 2/7 take back 1/7 day 3 give 2/7 Day 4 give 4/7 take back 1/7 and 2/7 Day 5 give 1/7 Day 6 give 2/7 and take back 1/7 Day 7 give 1/7
Ypsidixit - 2007-10-26 21:40:55

Wow! I'm very impressed! I sure didn't get this one, and I really didn't know anyone else would either!

Yep. That's it exactly. I find it wasy to picture with a mental image of a 7-square chocolate bar, broken into 3 pieces thus:

give I = I

2. IIII II / I
give II retrieve I = II

3. IIII I / II
give II to existing I = III

give IIII retrieve I & II = IIII

give I to existing IIII = IIIII

give II, retrieve I = IIIIII
aaaaaand.....give I = IIIIIII!

Wow. Great, Jim!

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