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Puzzle ZINR 



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Drone Racing - Logic Puzzles

After the recent BrainBashers drone racing contest, the four contestants were congratulating each other.

Only one drone had the same race number as the position it finished in.
Adrian's drone wasn't painted yellow, or blue.
Andy's drone beat Avery's drone, whereas Alex's drone beat the drone with race number #1.
The drone painted green (Alex's) finished second, and the drone painted blue had race number #4.
The drone that had race number #3 was painted red, and beat the drone that finished third.
Avery's drone had race number #1.
Can you work out whose drone finished where, its race number, and the colour it was painted?

Puzzle Copyright © Kevin Stone

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Answer
Pos  Owner   #      Colour
1    Adrian  #3     red
2    Alex    #2     green
3    Andy    #4     blue
4    Avery   #1     yellow

Reasoning
The four colours were: Blue, Green, Red, Yellow.
The four contestants were: Adrian, Alex, Andy, Avery.

By (4), second place was Green, and owned by Alex.
   1
   2    Alex           green
   3
   4

By (5), Red beat third place, and since Green was second, Red must have been first (and had race number #3).
   1            #3     red
   2    Alex           green
   3
   4

By (2), Adrian's drone was Red or Green, but we now know that Alex's drone was Green, so Adrian's drone was Red.
   1    Adrian  #3     red
   2    Alex           green
   3
   4

By (3), Andy beat Avery, so they were third and fourth respectively.
   1    Adrian  #3     red
   2    Alex           green
   3    Andy
   4    Avery

By (6), Avery's drone had race number #1.
   1    Adrian  #3     red
   2    Alex           green
   3    Andy
   4    Avery   #1

By (1), second place must have had race number #2 (as first place had race number #3, and fourth place had race number #1).
   1    Adrian  #3     red
   2    Alex    #2     green
   3    Andy
   4    Avery   #1

Which leaves third place with race number #4, and by (4) was Blue.
   1    Adrian  #3     red
   2    Alex    #2     green
   3    Andy    #4     blue
   4    Avery   #1

Which leaves fourth place as Yellow.
   1    Adrian  #3     red
   2    Alex    #2     green
   3    Andy    #4     blue
   4    Avery   #1     yellow

 

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