# Cutting a 7-by-9 rectangle

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

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

## 1 Answer

Answer blatantly stolen from this Math.SE post:

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