BUBBLE_SORT_SUDOKU

Made for GGJ2025, the theme is BUBBLE.

I thought this theme was too vague, and I don't like very vague themes, so I came up with the idea of a bubbling sort to make the concept very concrete. I made a  Sudoku variant that incorporates Bubble Sort, check the game's built-in rules description for details.

This sudoku has a unique solution and is strictly deductible at every step, which can be difficult at first glance, but the fun of the game is precisely in mastering the skill of counting the number of exchanges in a bubble sort. The approximate length of the game is between 20 minutes and 1 hour, so have fun.

ps: Remove the given numbers (i.e. no numbers in the range 9*9 except the numbers on the rows and columns) this sudoku is still the only solution, if you are interested, you can try to solve it by yourself!