What puzzle games do you attribute to an improvement in your programming skills?

You often get to read how puzzle games like Chess, GO, Sudoku help in keeping you cognitively active, and keep mental diseases like Alzheimer’s at bay. But are there any puzzle games that you believe have increased your programming skills?

I love playing Sudoku, and I think I arrive at logic for different programs quite intuitively, thanks to it. What puzzle games, books, activities do you think have contributed to an increment in your programming ability?