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A three-dimensional jigsaw puzzle comprising a base, a post fixedly secured to and emanating upwardly from the base, a first group of pieces, where each piece in the first group has a through-bore to enable stacking about the post and also has at least one radially extending projection in a shape of

A three-dimensional jigsaw puzzle comprising a base, a post fixedly secured to and emanating upwardly from the base, a first group of pieces, where each piece in the first group has a through-bore to enable stacking about the post and also has at least one radially extending projection in a shape of a trapezoidal solid, and a second group of pieces, where each piece in the second group has at least one radially extending projection in the shape of a trapezoidal solid. The first and second groups of pieces are operatively arranged to stack and interlock with one another to form a cylindrically shaped structure.

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1. A three-dimensional jigsaw puzzle, comprising: a base;a post fixedly secured to and emanating upwardly from said base;a first group of pieces, each of said pieces in said first group having a through-bore therein to enable stacking about said post and also having at least one radially extending p

1. A three-dimensional jigsaw puzzle, comprising: a base;a post fixedly secured to and emanating upwardly from said base;a first group of pieces, each of said pieces in said first group having a through-bore therein to enable stacking about said post and also having at least one radially extending projection in a shape of a trapezoidal solid, each of said pieces in said first group further including a top surface and a bottom surface, each of which is substantially planar; and,a second group of pieces, each of said pieces in said second group having at least one radially extending projection in the shape of a trapezoidal solid;wherein said first and second groups of pieces are operatively arranged to stack with one another to form a cylindrically shaped structure. 2. The jigsaw puzzle recited in claim 1 wherein each of said pieces in said first group of pieces includes a plurality of units which are substantially similar in shape. 3. The jigsaw puzzle recited in claim 1 wherein each of said pieces in said second group of pieces includes a plurality of units which are substantially similar in shape. 4. The jigsaw puzzle recited in claim 1 wherein said first and second groups of pieces comprise a plurality of trapezoidal solids. 5. The jigsaw puzzle recited in claim 1 wherein said cylindrically shaped structure has no gaps. 6. A three-dimensional jigsaw puzzle, comprising: a base;a post fixedly secured to and emanating upwardly from said base;a first group of pieces consisting of two pieces each having a through-bore therein to enable stacking about said post and also having at least one radially extending projection in a shape of a trapezoidal solid and a top surface and a bottom surface which are substantially planar; and,a second group of pieces, each of said pieces in said second group of pieces having at least one radially extending projection in the shape of a trapezoidal solid; wherein said two pieces of said first group of pieces and said second group of pieces are operatively arranged to stack with one another to form a cylindrically shaped structure. 7. The jigsaw puzzle recited in claim 6 wherein each of said pieces of said first group of pieces includes a plurality of units which are substantially similar in shape. 8. The jigsaw puzzle recited in claim 6 wherein each of said pieces of said second group of pieces includes a plurality of units which are substantially similar in shape. 9. The jigsaw puzzle recited in claim 6 wherein said first and second groups of pieces are made of a plurality of trapezoidal solids. 10. The jigsaw puzzle recited in claim 6 wherein said cylindrically shaped structure has no gaps. 11. A three-dimensional jigsaw puzzle, comprising: a base;a post fixedly secured to and emanating upwardly from said base;a first group of pieces consisting of three pieces each having a through-bore therein to enable stacking about said post and also having at least one radially extending projection in a shape of a trapezoidal solid and a top surface and a bottom surface which are substantially planar; and,a second group of pieces, each of said pieces in said second group of pieces having at least one radially extending projection in the shape of a trapezoidal solid; wherein said first group of pieces and said second group of pieces are operatively arranged to stack with one another to form a cylindrically shaped structure. 12. The jigsaw puzzle recited in claim 11 wherein each of said pieces of said first group of pieces includes a plurality of units which are substantially similar in shape. 13. The jigsaw puzzle recited in claim 11 wherein each of said pieces of said second group of pieces includes a plurality of units which are substantially similar in shape. 14. The jigsaw puzzle recited in claim 11 wherein said first and second groups of pieces are made of a plurality of trapezoidal solids. 15. The jigsaw puzzle recited in claim 11 wherein said cylindrically shaped structure has no gaps. 16. A three-dimensional jigsaw puzzle, comprising: a base;a post fixedly secured to and emanating upwardly from said base;a first group of pieces consisting of four pieces each having a through-bore therein to enable stacking about said post and also having at least one radially extending projection in a shape of a trapezoidal solid and a top surface and a bottom surface which are substantially planar; and,a second group of pieces, each of said pieces in said second group of pieces having at least one radially extending projection in the shape of a trapezoidal solid; wherein said first group of pieces and said second group of pieces are operatively arranged to stack with one another to form a cylindrically shaped structure. 17. The jigsaw puzzle recited in claim 16 wherein each of said pieces of said first group of pieces includes a plurality of units which are substantially similar in shape. 18. The jigsaw puzzle recited in claim 16 wherein each of said pieces of said second group of pieces includes a plurality of units which are substantially similar in shape. 19. The jigsaw puzzle recited in claim 16 wherein said first and second groups of pieces are made of a plurality of trapezoidal solids. 20. The jigsaw puzzle recited in claim 16 wherein said cylindrically shaped structure has no gaps. 21. A three-dimensional jigsaw puzzle, comprising: a base;a post fixedly secured to and emanating upwardly from said base;a first group of pieces consisting of five pieces each having a through-bore therein to enable stacking about said post and also having at least one radially extending projection in a shape of a trapezoidal solid and a top surface and a bottom surface which are substantially planar; and,a second group of pieces, each of said pieces in said second group of pieces having at least one radially extending projection in the shape of a trapezoidal solid; wherein said first group of pieces and said second group of pieces are operatively arranged to stack with one another to form a cylindrically shaped structure. 22. The jigsaw puzzle recited in claim 21 wherein each of said pieces of said first group of pieces includes a plurality of units which are substantially similar in shape. 23. The jigsaw puzzle recited in claim 21 wherein each of said pieces of said second group of pieces includes a plurality of units which are substantially similar in shape. 24. The jigsaw puzzle recited in claim 21 wherein said first and second groups of pieces are made of a plurality of trapezoidal solids. 25. The jigsaw puzzle recited in claim 21 wherein said cylindrically shaped structure has no gaps. 26. The jigsaw puzzle recited in claim 21 wherein said second group of pieces includes ten pieces.