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Masters of Logic Puzzles III. (stamps)
Posted 19 March 2008 - 06:42 PM
Posted 21 April 2008 - 02:15 AM
Posted 25 April 2008 - 10:44 PM
Good puzzle! Took me a bit.
And, if there is any further doubt, I agree that it was completely unambiguous- just tricky.
Posted 15 May 2008 - 04:18 PM
left only one possible answer for B
Posted 15 May 2008 - 04:57 PM
A: [ history has not recorded what A's second answer was ]
B: [ nor B's ]
What were A and B's second answers?
Posted 14 June 2008 - 09:39 PM
or if they all have red and green on their head this doesn't work either
Posted 19 June 2008 - 04:52 PM
The stamps have to be one of each color by the phrasing of the question, else they color could not be isolated.
Still a good riddle.
Edited by DugALug, 19 June 2008 - 04:53 PM.
Posted 24 July 2008 - 11:37 AM
A 1: says no so everyone knows BC isn't 4-0 0-4 so only possibilities for BC are 3-1 2-2 1-3 1-1-1-1. (RGGG GGGR GGRR RRGG RRRG GRRR GRGR)
B 1: B also says no which means everyone knows AC isn't 4-0 0-4. B sees 3-1 2-2 1-3 1-1-1-1 possibilities for AC.
C 1: says no when she knows BC and AC both don't have 4-0 or 0-4. If she sees AB = 2-2 then she would know she has RG. For AB = RRGG GGRR C must be RG or else AC or BC would have been 4-0 0-4. Therefore C didn't see 2-2 because she said no. Since AB can't be 2-2 everyone knows possible AB are 1-3 3-1 1-1-1-1.
A 2: says no so BC can't be GGGR RRRG RRGG GGRR or else A would be RG because if A is RR/GG while BC is any of those then AB would be 2-2. A knows AB can't be 2-2 from C 1 saying no. All thats left for BC is RGGG GRRR GRGR.
B 2: figures it out from A 2 saying no. BC can only be GRRR or RGGG or GRGR and all three have B as RG.
Don't know if this is more clear.
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