I like to use puzzles as a way to sharpen my mind. Do you have a favorite type of puzzle?
I do too.  My favorites are crossword puzzles and logic-type puzzles, like Tetris.  What about you?
I like doing word puzzles and Sudoku mostly
Some of the Sudoku puzzles are hard, the 9x9 grid ones, but they are fun to do.
I like doing crossword puzzles too. But I can only do the easy ones. I don't have patience for the ones that take hours.
The New York Times crossword puzzle
"The New York Times" crossword puzzle is a daily puzzle published in "The New York Times", online at the newspaper's website, syndicated to more than 300 other newspapers and journals,
and available as mobile apps.
The puzzle is created by various freelance constructors and has been edited by Will Shortz since 1993. The puzzle becomes increasingly difficult throughout the week, with the easiest puzzle on Monday and the most difficult puzzle on Saturday. The larger Sunday crossword, which
been commercialized as board games ("Scrabble", for instance, is based on the idea of a crossword puzzle, and tic-tac-toe sets with a boxed grid and pieces are available commercially). These games vary widely, from games centering on a design being drawn such as "Pictionary" and "connect-the-dots" games like sprouts, to letter and word games such as "Boggle" and "Scattergories", to solitaire and logic puzzle games such as Sudoku and crossword puzzles.