Tsao, Hung-ping (2021). Evolutionary mathematics and arts Sudoku10.0: All Sudoku Puzzles are Equally Easy. In: “Evolutionary Progress in Science, Technology, Engineering, Arts, and Mathematics (STEAM)”, Wang, Lawrence K. and Tsao, Hung-ping (editors). Volume 3, Number 11, November 2021; 92 pages. Lenox Institute Press, Auburndale, MA, 02466, USA. No. STEAM-VOL3-NUM11-NOV2021; ISBN 978-0-9890870-3-2. …………ABSTRACT: In my previous chapter SUDOKU9.0, I introduced the Principle of the Least Choice (PLC) to solve hard Sudoku puzzles. As it turned out, this strategy worked for any puzzle, hard or easy. I’ll show
you how easy it is by solving five puzzles illustratively in Section 1 and revisit those five hardest ones presented in SUDOKU9.0 with this innovative approach in Section 2. Therefore I solemnly declare that SUDOKU10.0 makes “Sudoku puzzles of 10 levels equally easy”. ……….KEYWORDS: Sudoku, Puzzle, Candidate, Single choice, Principle of the Least Choice, tandem.