perplexus.info :: Logic : BAD Ceed

BAD Ceed (Posted on 2019-02-27)

You are to place one each of A, B, C and D in each row of the below grid, leaving one cell blank. Do this in such a way that each column will also have one each of A, B, C and D and one blank.

Around the edges have been placed letters indicating the closest non-blank entry in that row or column. For example, the A to the right of row 2 indicates that the last non-blank in that row should be an A. The first non-blank in that row will be a D as indicated by the D to the left of that row.

          A       D         
   ++===+===+===+===+===++  
   ||   |   |   |   |   ||  
   ++---+---+---+---+---++  
 D ||   |   |   |   |   || A
   ++---+---+---+---+---++  
   ||   |   |   |   |   || B
   ++---+---+---+---+---++  
   ||   |   |   |   |   ||  
   ++---+---+---+---+---++  
 B ||   |   |   |   |   || A
   ++===+===+===+===+===++  
      C

From Mensa Puzzle Calendar 2019 by Fraser Simpson, Workman Publishing, New York. Puzzle for February 19.

See The Solution Submitted by Charlie

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| Comment 1 of 2

          A       D

   ++===+===+===+===+===++  
   || B | A | _ | D | C ||  
   ++---+---+---+---+---++  
 D || D | C | B | A | _ || A
   ++---+---+---+---+---++  
   || A | D | C | _ | B || B
   ++---+---+---+---+---++  
   || C | _ | A | B | D ||  
   ++---+---+---+---+---++  
 B || _ | B | D | C | A || A
   ++===+===+===+===+===++  
      C

Posted by Caleb on 2019-02-27 21:19:40

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