School-Safe Puzzle Games

Rolling Wheels

Two wheels simultaneously make one full turn in the same direction along a straight line. They left the trace shown. In which direction did the wheels turn?

This challenge comes from the brand new Grabarchuk book 103 Puzzle Quizzes! Their highly rated PuzzleBook: Puzzle Quizzes series can be played on any Kindle device or any other device using the free Kindle app (for example your PC or iPad). It should be noted that while this puzzle is hard, the series is created for all kinds of solvers-beginners, skillful, and expert alike. The puzzles are arranged so that you start with the easy (*) ones, and progress to the really hard (*****).  In addition to visual-spatial problems, you’ll also find geometry, coins, matchsticks, searching, counting, and all sorts of brain-teasing goodness inside!

Answers to this challenge can be entered into the section below; submissions will automatically be revealed when time is up!

19 Comments to “Rolling Wheels”

  1. RK | Founder | Profile


  2. engjs1960 | Profile

    Right to left. The right wheel has produced RYRYRY, the left YRYRYR, but the first YR has been overwritten.

  3. microu | Profile

    counter clockwise

  4. Shawn | PUZZLE GRANDMASTER | Profile

    They moved from right to left.

    One wheel (wheel #1) started at the extreme right (block #1). Its first imprint was red.
    The other wheel (wheel #2) started at the 5th block from the right (currently a red block). Its first imprint was yellow.
    Wheel #1 imprinted its pattern over that of wheel #2.

  5. suineg | PUZZLE MASTER | Profile

    left of the screen, cool puzzle!

  6. Leoandrex | Profile

    The only thing i can think about is that one wheel started from the far left of the pattern going to the right while the other wheel started from the right of the double yellow pattern going to the right

  7. suineg | PUZZLE MASTER | Profile

    To the Grabarchuck Family: Awesome Puzzles.
    On my iphone I have:
    Sliding tiles Deluxe
    LetsTans Deluxe

    Very hard puzzles man, cool!!

    And of course Untouchable 11: Smart-Kit Version and the new one thats even harder!!!

  8. Bobo The Bear | PUZZLE MASTER | Profile

    The wheels are rolling counterclockwise, from right to left.

  9. Hex | PUZZLE MASTER | Profile

    Counterclockwise (motion is right to left):

    The last 4 imprints on the left are from the left wheel, and the 6 remaining ones are from the right wheel. The last 2 imprints of the right wheel cover the 1st 2 imprints of the left one.

  10. Leoandrex | Profile

    I noticed that the long yellow line is not equal with the other patterns therefore i’m thinking one wheel started with a full color and the other wheel started with half a color each?

    After figuring that out the most sensible thing i can think off is one wheel(which started out as a full red color) rolled from the left going to the right of the pattern and the other wheel( which started as half color of red and yellow) started rolling somewhere at the middle of the long yellow pattern going to the right.

    one full turn- 7 rolls right?

  11. Hex | PUZZLE MASTER | Profile

    And the winner is RK. The correct answer to this puzzle is: test

  12. Leoandrex | Profile

    I thought of right to left too at first but then i misunderstood the meaning of one full turn, my understanding was that if it started on red it had to end on red and the same for yellow

  13. RK | Founder | Profile

    @Hex: After the answers are unmasked, I normally go back & delete the required ‘test’ comment that has to entered to get the timer going. In this case, think I’ll leave it up! :D

  14. sofia alonso | Profile


  15. tristyn | Profile

    left of the screen )>

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