1. Cultivate the concept of space (advanced space-3D graphics)

Third order-fifth order Rubik's cube; If you are still interested, you can play some simple special-shaped Rubik's Cube, such as "Nothing" Rubik's Cube and Pyramid Rubik's Cube, all of which are relatively simple special-shaped Rubik's Cube.

2. Cultivate divergent thinking (diversified strategies to solve problems)

Puzzle games: There are many such games. You go to Baidu to search for "puzzle-solving and unlocking games" and it comes out.

Traditional projects: Huarong Road, Tangram, Nine Chains.

3. Cultivate a sense of numbers

Sudoku-game consoles, online Sudoku, buying books.

There are many more, please decide according to your own preferences. These are some of my plays, which are quite good and for reference only.