| 摘要 |
<p>The sheet has identical parts (1), where each part is symmetrical, balanced, and interchangeable. The parts contain notches and circular protrusions on each side. Circular indentations and protrusions fit exactly into each other, so that parts can be linked together, where the puzzle sheet is made of plastic/foam material, wood and cardboard, and the parts are in green, blue or red colors. An independent claim is also included for a method for sorting and making jigsaw puzzle.</p> |
