View attachment 46168 This is the "well" game (in Chinese) similar to Sudoku. It has 9 areas with different colours. I will draw one number from each area. In order to have a line, at least 3 number drawn must be same row, column or diagonal. I will illustrate an example as below: View attachment 46169 How to calculate the odds of having 1,2...8 lines? Anyone can help me or give me some hints?