Is it possible to dissect a $7\times9$ rectangle into $21$ pieces that are $L$-shaped and that consist of three little squares?

  • $\begingroup$ I suspect the answer is no; now I just need to find the invariant. $\endgroup$ – Joe Z. Dec 19 '15 at 8:17

Answer blatantly stolen from this Math.SE post:


  • 1
    $\begingroup$ Makes me wonder where OP got the question from in the first place. $\endgroup$ – user1717828 Dec 19 '15 at 17:37

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.