There are also some old intellectual games, such as Nine Chains, Huarong Road, Domino, Luban Lock and so on.

These are a combination of math and game toys, which are very interesting.

Among them, the person who plays the most widely, I believe, is the jigsaw puzzle. Hehe, Huarong Road is also good. Several mobile phones I bought have the game Huarong Road.

In fact, I feel that the intellectual game of mathematics is mainly to exercise logical thinking and imagination.