There is a 6x6 grid. Each row/column has A, B, C and D exactly once, and two blanks. Each cell may have upto one letter only. A blank is not a letter.


  • The left-most letter of row 2 is A and right-most is B
  • The left-most letter of row 3 is also A
  • The right-most letter of row 4 is B
  • The left-most letters of row 5 and 6 are both B
  • The first letter of the first column is D
  • The first letter in columns 2 and 3 is A
  • Column 2 ends with D (or 1/2 spaces after a D)
  • For column 4 and 6, the first letter is B and last is C

There exists a unique solution; I have twice-verified.

Please help out with the tags...

  • $\begingroup$ Don't the first two conditions put the letter A in column 1 twice? (And the same with B in 2, 4, 5, and 6?) $\endgroup$ – user20 Mar 2 '15 at 10:43
  • $\begingroup$ @Emrakul I think he meant it as "First letter of row..." $\endgroup$ – Novarg Mar 2 '15 at 10:46
  • $\begingroup$ @Novarg Hmm... if A is the first letter in two rows, it seems like it'd still violate the rules of the puzzle. $\endgroup$ – user20 Mar 2 '15 at 10:54
  • $\begingroup$ @Emrakul by saying "First letter of row" I meant that there are no other letters before that, but there can be a blank $\endgroup$ – Novarg Mar 2 '15 at 10:56
  • $\begingroup$ @Novarg Ahh, I see. That makes sense, thanks! $\endgroup$ – user20 Mar 2 '15 at 10:57

Does this work? ;)

Oh well, this puzzle was something else. Innovative indeed and mind-boggling! Thanks!

  • 2
    $\begingroup$ These puzzles are sometimes called "easy as abc" puzzles and there are a lot of them. check this image search: google.com/search?q=EASY+AS+ABC+puzzles&tbm=isch $\endgroup$ – Ivo Beckers Mar 2 '15 at 14:07
  • $\begingroup$ Thanks, I didn't know those existed. +1 Still I'd let the 'innovative' word live in my answer, assuming the OP created it. :) $\endgroup$ – Donbhupi Mar 2 '15 at 14:10
  • $\begingroup$ @IvoBeckers Oh, ok. I had seen found one in a book, so I tweaked it a bit and posted it. Thanks for letting me know that others make them as well. $\endgroup$ – ghosts_in_the_code Mar 2 '15 at 18:57

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.