It's not Math...It's Logic

I just recently purchased my the very first issue of Sudoku Samurai. It's an alternative for crossword puzzle. It's a logic-based placement puzzle. The objective is to fill the 9x9 grid so that each column, each row, and each of the nine 3x3 boxes contains the digits 1 to 9. The puzzle setter provides a partially completed grid so that there is only one solution

I found this puzzle interesting it exercises my analysis skills. As an engineer/web designer, analysis is very important.