Somebody has messed up my bookshelf by shoving a book into completely the wrong place.

Which is the intruder?

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  • $\begingroup$ Would you like to comment on whether you mean a book that shouldn't be on this shelf at all or one that should be in a different position? (I think you mean the former and it might well be that there's no particular ordering to the correctly-placed book. But it seems worth checking. Of course you might prefer not to answer...) $\endgroup$
    – Gareth McCaughan
    Commented May 16, 2019 at 10:48
  • $\begingroup$ Good question... $\endgroup$ Commented May 16, 2019 at 10:49

3 Answers 3


The wrong book is

Vicious Circles and Infinity (the second one)


the first letter of each other title spells out "my bookshelf".

  • 1
    $\begingroup$ Very good. Well done! $\endgroup$ Commented May 16, 2019 at 19:15

Obviously wrong answer

... but it amuses me and it might amuse OP too. Perhaps the book that's in the wrong place is

Oliver Twist


it belongs over here, between Bleak House and The Murder of Roger Ackroyd.

  • 1
    $\begingroup$ Ha, yes. 11 next to 10. Very good! $\endgroup$ Commented May 16, 2019 at 10:58
  • 2
    $\begingroup$ What a twist! :D $\endgroup$
    – Brandon_J
    Commented May 16, 2019 at 17:09
  • 1
    $\begingroup$ @Brandon_J Ha! Nice one! $\endgroup$
    – Mr Pie
    Commented May 16, 2019 at 22:50

Probably not the correct answer, because it's too straightforward, but each of the books is a proper book, but Birds Songs & Calls is multimedia - it comes with 2 CDs


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