活動內容：

主講人：曹恆平 博士 (舊金山州立大學)
題 目：NATURAL SUDOKU AND PRIME FACTORS
時 間：下午2:10開始
地 點：科學館S433
摘要Abstract:

Sudoku, evolved from Euler’s Latin Square, has become the most popular worldwide pastime recreation since the turn of this century. However, most people if not all, have not treasured this human legacy. Extreme Sudoku puzzles are usually designed for defying our logical reasonings, so we can counter with the Principle of Least Choice (PLC) by selecting the least likely one when facing the multiple choices of our next move. The harder the puzzle, the more often PLC is recommended to be used. For Natural Sudoku (Sudoku with the minimum of 17 required givens), there are no extra givens that puzzle makers can maneuver to design extremely hard Sudoku so that PLC won’t be used at all. Accordingly, I plan to give a series of lectures, each containing 1 puzzle with illustrative solution and 49 practice puzzles with annotated solutions. All (approximately 5000) natural Sudoku puzzles can be downloaded from Gordon Royle list. In this presentation, I shall first demonstrate how to solve a Natural Sudoku with annotated solution and then solve the hardest Sudoku using PLC. The solving process of each natural Sudoku puzzle is performing in an act of martial art as well as poetic rhythm. My goal is to solve all Natural Sudoku puzzles and preserve their annotated solutions.

活動時間：

2023/04/25 14:10 ~ 2023/04/25 15:30

報名時間：

2023/04/13 14:30 ~ 2023/04/24 17:00

活動地點：

科學館 S433室