Jigsaw puzzle assembly

Abstract

A jigsaw puzzle includes a base and multiple puzzle piece blocks detachably mounted on top of the base. The puzzle piece blocks are composed of corner puzzle piece blocks each having a first marking to show that the corner puzzle piece block is located at a corner of the base, side puzzle piece blocks each having a second marking to show that the side puzzle piece block is located at a side of the base and central puzzle piece blocks surrounded by the corner puzzle piece blocks and the side puzzle piece blocks.

1 . A jigsaw puzzle comprising: 
 a base; and    multiple puzzle piece blocks detachably attached to a top face of the base and respectively having multiple bosses formed on a top face thereof and including corner puzzle piece blocks, side puzzle piece blocks and central puzzle piece blocks, each corner puzzle piece block having first bosses respectively formed on a back side of the corner puzzle piece block to correspond to one of corners of the corner puzzle piece block and two first ribs interconnecting three of the first bosses of the corner puzzle piece block to indicate that the corner puzzle piece block is located at one of multiple corners of the base, each side puzzle piece block having multiple second bosses respectively formed on a back side of the side puzzle piece block to correspond to one of corners of the side puzzle piece block and a second rib interconnecting two of the second bosses to indicate that the side puzzle piece block is located at a side of the base, each central puzzle piece block having multiple third bosses respectively formed on a back side of the central puzzle piece block to correspond to one of corners of the central puzzle piece block to indicate that the central puzzle piece blocks are surrounded by the corner puzzle piece blocks and the side puzzle piece blocks.    
   
   
       2 . The jigsaw puzzle as claimed in  claim 1 , wherein the base has multiple through holes defined through the base, each of the corner puzzle piece blocks has a first circular step formed on the back side of the corner puzzle piece block and a first cylindrical extension extending from a center of the first circular step to be extended through a corresponding one of the through holes of the base, each of the side puzzle piece blocks has a second circular step formed on the back side of the side puzzle piece block and a second cylindrical extension extending from a center of the second circular step to be extended through a corresponding one of the through holes of the base, each of the central puzzle piece blocks has a third circular step formed on the back side of the central puzzle piece block and a third cylindrical extension extending from a center of the third circular step to be extended through a corresponding one of the through holes of the base such that after the first cylindrical extension of the corner puzzle piece block, the second cylindrical extension of the side puzzle piece block and the third cylindrical extension of the central puzzle piece block are extended through the corresponding through holes of the base, the first bosses, the first circular step, the second bosses, the second circular step, the third bosses and the third circular step keep the puzzle piece blocks away from engagement with the top face of the base to facilitate detachment of the puzzle piece blocks from the base.  
   
   
       3 . The jigsaw puzzle as claimed in  claim 1 , wherein the base is composed of multiple base units each being selectively engageable with a corresponding one of the base units.  
   
   
       4 . The jigsaw puzzle as claimed in  claim 2 , wherein the base is composed of multiple base units each being selectively engageable with a corresponding one of the base units and having multiple connecting areas each configured as a quadrant, each connecting area includes an arcuate gap defined between a first wall and a second wall having a height lower than a height of the first wall.  
   
   
       5 . The jigsaw puzzle as claimed in  claim 4  further comprising a circular joint to combine base units, the circular joint having a recessed area defined in a bottom face of the joint, a cross shaped protrusion formed on the bottom face of the joint and a cruciform path defined in the cross shaped protrusion to correspond to and receive therein side walls surrounded by the second wall of each of the base units such that after a portion of a peripheral edge of the circular joint is received in the arcuate gap in the base unit, each base units is selectively engageable with a corresponding one of the base units.  
   
   
       6 . The jigsaw puzzle as claimed in  claim 5 , wherein the joint further has a step formed on a top periphery of the joint to correspond to a hook formed on an inner face of the second wall such that after the hook is abutted to the step of the joint, engagement between adjacent base units are secured.