A 3x3x3 cube, composed of 27 small cubes, is to be constructed from three 9-cubes. Five 9-cubes are given, pieces 9_1, 9_2, 9_3, 9_4, and 9_5. Puzzle 1 uses pieces 9_1, 9_2, and 9_3. Puzzle 2 uses pieces 9_1, 9_4, and 9_5. The three pieces for puzzle 1 can all be removed from the completed puzzle by simple translations, in puzzle 2 only piece_p_1 can be so removed.

View_answers_samples.scad shows the answers; the puzzles are not difficult.

The puzzles are more interesting if the pieces are printed in different colors.