Tsao, Hung-ping (2020). Evolutionary mathematics and arts for Sudoku ecstasy investigation. In: “Evolutionary Progress in Science, Technology, Engineering, Arts, and Mathematics (STEAM)”, Wang, Lawrence K. and Tsao, Hung-ping (editors). Volume 2, Number 5, May 2020; 54 pages. Lenox Institute Press, PO Box 405, Newtonville, NY, 12128-0405, USA. No. STEAM-VOL2-NUM5-MAY2020; ISBN 978-0-9890870-3-2. —————ABSRACT: In contract to Number 4 of Volume 1 (Sudoku 1.0) in which readers are elevated from beginners to veterans and Number 5 of Volume 1 (Sudoku 2.0) where educational and situational moves are introduced for proficiency elevation, this chapter is intended for readers to have the most fun with all puzzles with 17 initial values that require 64 steps to complete. Other than the introduction, no further instructions will be given. 63 puzzles are divided into 9 sections in such a fashion that each section contains 7 puzzles followed by their annotated solutions so that readers can steadily improve their solving skills to reach the optimal ecstasy.