1 x 5 x 11 (9)
Similar to the 1x5x10, the 1x5x11 has limited use of sub shapes. Here is one solution using the 1x3x4.
1 x 5 x 12 (126)
The 1x5x12 gets back to the realm of fairly easy (with 126 solutions) and the usage of several sub shapes. Can you spot them all in this solution? There is the 1x3x3 and the 1x3x4 within the 1x4x5. Since this shape uses 60 of the possible 64 subcubes it is easy to calculate which piece is not used. Hint: The 1x5x12 has an equal number of Black and White subcubes.
