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Colored Board Baffle (Posted on 2022-09-13) Difficulty: 3 of 5
Precisely 7 boards are arranged in a straight line. Their colors are:
blue, brown, green, orange, purple, red, and yellow - albeit not necessarily in that order.

It is known that:
  1. Red is next to blue.
  2. Purple is somewhere to the left of green.
  3. There is precisely one board between yellow and red.
  4. There are exactly two boards between brown and blue.
  5. Blue is the 4th board from the left.
  6. Orange is directly between yellow and purple.
Determine the precise order of these seven boards.

See The Solution Submitted by K Sengupta    
Rating: 5.0000 (1 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
solution | Comment 3 of 7 |
Using rules 3 and 6, either purple/orange/yellow/***/red or red/***/yellow/orange/purple.  Since rule 5 puts blue in the middle, purple will be either the first or the last board, and rule 2 makes it the first.

Then rule 4 places brown, green gets the remaining empty board so that the solution is:  


Rule 1 isn't needed.

  Posted by xdog on 2022-09-13 11:34:43
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