I'm a chess player...

...but one day I got bored of chess...

...so I downloaded a Sudoku app and spent a few days playing sudoku...

..and hit a wall. I blew through the easy levels, and the normal levels and the medium levels, and couldn't for the life of me figure out a hard level...

so I quit.

Few months later I got bored of chess again, and got the same "free" app for my phone and did the same thing, but this time, my patience for adverts on the "free soduku" app was over inside of 2 days. So I looked for a paid app and I found one with 10,000 classic sudoku puzzles (and a bunch more sudoku varients with lots of puzzles for each type).

I did the first level "very easy 1", after a few puzzles I tried level 2 of "very easy", which was harder. Took me a few tries, but finally got a "feel" for the puzzles, and quickly did a few of each "very easy" sudoku levels 3, 4, and 5...

...apparently in sudoku, level difficulty is whatever the creator decides.

Still, I tried to do an "Easy 1" puzzle, and took me several tries, a few youtube videos, and just as much patience as playing chess. -By now I was waiting for a sudoku strategy guide to come in the mail. The 2nd "Easy 1" puzzle was way harder, and after a few tries, finally spent a solid hour solving it... and I had to use a LOT of notes, like they show in youtube videos.

It was the 3rd "Easy 1" puzzle I did when I realized that the app I bought had an "experienced" sudoku player in mind as the target audience. I happened to open up a random page in the strategy guide I got in the mail.. I'd just checked the mail, and it was about force chains. YEP: the 3rd sudoku "Easy 1" problem I did had to use a force chain to solve.

But after solving that 3rd "Easy 1" puzzle, I was totally addicted to sudoku.