1. Sudoku: Sudoku is a classic logical reasoning game, which requires numbers to be filled in the nine squares, so that the numbers in each row, column and small nine squares are not repeated. Using Jiugongge, we can turn Sudoku problem into logical reasoning problem and find a solution.
2. Fill-in-the-blank problem: Jiugongge can be used to solve some fill-in-the-blank problems, such as filling numbers in a Jiugongge to make the sum of numbers in each row, column and diagonal equal. By observing the Jiugongge law, we can find the right numbers to fill in the blanks, thus satisfying the conditions.
3. Graphics problems: Jiugongge can be used to solve some graphics-related problems, such as filling a Jiugongge with different symbols or colors, so that the colors or symbols of adjacent grids are different. By observing the Jiugongge law, we can find a suitable filling method.
4. Combination problem: Jiugongge can be used to solve some problems related to combination, such as filling different items or options in a Jiugongge, so that the items or options in each row, column and small Jiugongge are not repeated. By using Jiugongge, we can turn the combinatorial problem into a logical reasoning problem and find a solution.
In a word, Jiugongge is a very useful mathematical tool, which can help us solve all kinds of mathematical problems, from logical reasoning to graphics and combination problems. By observing the law of nine squares and using appropriate strategies, we can find a solution to the problem.