Do you Sudoku?

「Karadascan」の体重計を買ってから毎朝のチェックを楽しみにしていて、
でも、見てから時々「何だ、今日、変化ないじゃん」とがっかりする Mr. Celaya です。
でも！
Billy と１日６回の腹筋のおかげで体年齢は実年齢より３歳したになって体脂肪は１６％以下 keep! （じまん？？）

体以外に今はまっているはこれ↓



Have you ever seen this number game? Simply put, it is number puzzle where you have to fill a 9x9 grid so that each column, each row, and each of the nine 3x3 blocks contains the numbers from 1 to 9 only once. you start out with a few "hint" numbers, like this...



and when you finish, it should look like this...



...well, in my case it is always a lot messier. Like this...



Anyway, it's pretty interesting and can be a lot more difficult, challenging and frustrating than it looks. I bought this book in Hawaii last April, and I still haven't finished it...