Combination 3-5-9-15 of Berend Jan van der Zwaag

3

Does it fit together with two copies of another pentomino in a 3x5 rectangle?

5

Does it fit together with two copies of another pentomino in a 3x5 rectangle?

9

Is its bounding rectangle a square?

15 

Can two copies construct a point-symmetric decamino with a fully enclosed 1x1 hole?

  F I L N P T U V W X Y Z

3

N Y Y N N Y N Y N Y Y Y

5

N Y Y Y Y Y N Y N N N N

9

Y N N N N Y N Y Y Y N Y

15

Y N Y Y N Y N N N N Y Y


 Solution 3

Solution 5


Solution 9


 

Solution 15