Tsao, Hung-ping (2019). Evolutionary mathematics and arts for sudoku proficiency investigation. In: “Evolutionary Progress in Science, Technology, Engineering, Arts, and Mathematics (STEAM)”, Wang, Lawrence K. and Tsao, Hung-ping (editors). Volume 1, Number 5, May 2019; 123 pages. Lenox Institute Press, PO Box 405, Newtonville, NY, 12128-0405, USA. No. STEAM-VOL1-NUM5-MAY2019; ISBN 978-0-9890870-3-2. —————ABSTRACT: In contract to Number 4 of Volume 1 (Sudoku 1.0) in which readers are divided into begginers and veterans, no distinction would be made here in Sudoku 2.0 based on the belief that all minds are created equal in the world of Sudoku. The unique features of this chapter are as follows: 1) Educational and situational moves are introduced for proficiency elevation. 2) Most puzzles are with 17 initial values that require 64 steps to complete. 3) Plenty of hard puzzles are provived in the end for readers to practice.