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Puzzle ZNLA 



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Downhill Mountain Bike Race - Logic Puzzles

At the recent BrainBashers downhill mountain bike race, four entrants entered the challenging slalom event.
Alex finished in first position.
The entrant wearing number #2 wore red, but Drew didn't wear yellow.
The person in last place wore blue, and Stevie wore number #1.
Glen beat Stevie, and the person who finished in second wore number #3.
The entrant in yellow beat the entrant in green.
Only one of the entrants wore the same number as their final position.

Can you determine who finished where, the number, and colour they wore?

Puzzle Copyright © Kevin Stone

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Answer
Pos Name   Wore    Colour
1   Alex   #2      red
2   Glen   #3      yellow
3   Stevie #1      green
4   Drew   #4      blue

Reasoning
The four colours were: blue, green, red, yellow.
The four contestants were: Alex, Drew, Glen, Stevie.

By (1), Alex was first.
   1   Alex
   2
   3
   4

By (4), the person who was second wore number #3.
   1   Alex
   2          #3
   3
   4

Looking at (6):
 - first place (Alex) can't have worn #1, because, by (3), Stevie wore #1
 - second place wore #3
 - third place can't have worn #3, because it was worn by second place
 - fourth place is the only entrant who could have worn the same number as their final position

Therefore, Stevie finished in third, and Alex wore #2.
   1   Alex   #2
   2          #3
   3   Stevie #1
   4          #4

By (2), Alex wore red. By (3), the person wearing blue was last.
   1   Alex   #2      red
   2          #3
   3   Stevie #1
   4          #4      blue

By (5), yellow beat green.
   1   Alex   #2      red
   2          #3      yellow
   3   Stevie #1      green
   4          #4      blue

By (4), Glen beat Stevie.
   1   Alex   #2      red
   2   Glen   #3      yellow
   3   Stevie #1      green
   4          #4      blue

Leaving Drew in last place.
   1   Alex   #2      red
   2   Glen   #3      yellow
   3   Stevie #1      green
   4   Drew   #4      blue

 

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