A five-by-five cube puzzle comprising:
- a central shaft assembly having:
- a multi-axis shaft unit having:
- a base;
- and
- six center shafts formed on the base to respectively point to six mutually perpendicular directions;
- six inner shields, each having an inner arch plate being square and detachably mounted around one of the center shafts;
- and
- six outer shields, each having:
- an outer arch plate being square;
- a protruded shaft formed on and protruding inwardly from an inner side of the outer arch plate, and centrally mounted through the inner shield;
- a spring mounted in the outer shield;
- and
- a screw screwed into one of the center shafts through the spring so that a corresponding outer shield is movable along an axial direction of the protruded shaft and a stroke of movement of the outer shield is limited by an overall length of the screw;
- six center blocks, each having a square plate centrally mounted on the outer arch plate of one of the outer shields;
- twenty four first intermediate blocks divided into six sets respectively mounted around the center blocks, each having:
- a square plate, wherein one edge of the square plate adjoins a corresponding edge of the square plate of a corresponding center block;
- and
- a junction portion detachably engaging the outer arch plate of one of the outer shields, and having two ears respectively formed on and protruding from two sides of the junction portion, and each ear detachably abutting against an edge of the outer arch plate of a corresponding outer shield;
- twenty four second intermediate blocks, each mounted between two adjacent first intermediate blocks, being diagonally adjacent to one corner of one of the center blocks and having:
- a square plate, wherein two adjacent edges of the square plate respectively adjoin two edges of the square plates of two adjacent first intermediate blocks;
- and
- an assembling portion formed on an inner side of the second intermediate block and detachably engaging the outer arch plate of one of the outer shields;
- twelve first edge blocks mounted between two adjacent first intermediate blocks on two adjacent sides of the cube puzzle, each having:
- a first piece having two square faces perpendicularly connected;
- and
- a connection portion formed with the first piece and detachably connecting with the inner arch plates of two adjacent inner shields and the outer arch plates of two adjacent outer shields;
- twenty four second edge blocks, each having:
- a second piece formed on one end of the second edge block and having two square faces perpendicularly connected with each other;
- and
- an engagement piece formed on the other end of the second piece and detachably connecting with the inner arch plates of two adjacent inner shields and the outer arch plates of two adjacent outer shields;
- and
- eight corner blocks, each surrounded by three adjacent second edge blocks, and having:
- a corner body having three square faces formed on one end of each corner block and perpendicularly connected with each other;
- and
- a corner connection portion formed on the other end of the corner body and detachably abutting against the inner sides of the inner arch plates of two adjacent inner shields.