2023 CALENDAR SUDOKU: One grid per day to become a sudoku expert

This book contains 365 grids of SUDOKU of increasing level (easy to hard). You will start the year slowly with easy grids. As the difficulty of the grids increases, you will arrive without realizing it at the “”expert”” level at the end of the year. —- ISBN: 9798353673255 | ISBN10: B0BFV3SWV4 | ISBN-13: 979-8353673255