Seven-piece puzzle

The utility model relates to a jigsaw puzzle, which belongs to toys which are beneficial to intelligence. The utility model is composed of seven boards, wherein, two boards are big triangular boards, two boards are small triangular boards, one board is a middle triangular board, one board is a square board and one board is a parallelogram board. Patterns in various shapes can be spliced by arraying and combining the boards in different modes. Patterns which are spliced and combined by boards with different numbers and have different difficult degrees are divided into a primary class patterns, a middle class patterns and a high class patterns for people at different ages. The toy is beneficial to develop the intelligence of youngsters. After the utility model is put in markets, the utility model can be developed into products.