Basic terminologies
  • \(m\) x \(n\) Representation of rectangles.
  • "\(m\)" is the number of rows in a rectangle.
  • "\(n\)" is the number of columns in a rectangle.
3 x 7 rectangle:
3x7 rectangle_blue.png
  • It is impossible to fill up the rectangle by using all the \(5\)-Tetromino types once, because of using the \(T\)-Tetromino which has its center square covered by the other three squares (in three sides).
  • It is possible to fill up the rectangle when each of the \(5\)-Tetromino is used twice.