***Spoilers for Day 12 ahead***
Here are the seven possible tetrominoes you can make by joining together four squares edge to edge.

Is it possible to tile a 7 by 4 rectangle with these seven pieces?
Consulting mathematician
***Spoilers for Day 12 ahead***
Here are the seven possible tetrominoes you can make by joining together four squares edge to edge.
Is it possible to tile a 7 by 4 rectangle with these seven pieces?