How many queens can be on a chessboard without attacking each other?

What is the maximum number of queens that can be placed on a standard 8x8 chessboard such that no one of them is capable of attacking any of the others in a single move?

8.

Because:

Obviously, you can't have more than 8, since you would have a row (and column) with more than one queen on it.

According to Wolfram-Alpha, there are

12 unique solutions, plus an additional 80 solutions from rotation/reflection.

One possible solution is:

A list (and images!) of all

12 base solutions can be found both at the above Wolfram-Alpha link and Wikipedia. (Thank you Kevin for the link).

Sorry for reviving a 5 years old question, but I can fit:

16 queens

I hope to avoid downvotes by pointing out that this troll solution satisfies all the conditions of the original question.

(

• Is there really a point to necroing a 5 year old question with a response you openly acknowledge is a troll answer that clearly doesn't address the intent of the question? Please don't.
– Rubio
Jun 15, 2019 at 21:59
• A troll solution is still a solution. Take it as an oportunity to see the importance of a good design in puzzle creation and an example of thinking out of the box. Jun 15, 2019 at 23:48
• Just missing to approve that it is the maximal solution.(+1)
– z100
Jun 16, 2019 at 20:15
• Why is this a troll solution? Seems perfectly reasonable to me Aug 28, 2019 at 18:21
• Yes, pawns are not prohibited in the question, nice creative thinking! Aug 29, 2019 at 10:12