Its been said the first 15 minutes of a game is the most critical - after all, we all know how important first impressions can be.While Shogun Sudoku Deluxe is an entertaining and challenging puzzle game, it doesn't follow the aforementioned rule. In fact, the first few minutes are rather bland and predictable. Thankfully, it's not indicative of the entire game.The core game-play surrounds Sudoku (pronounced "su-doe-ku"), the wildly popular number-based brainteasers found in many of the nation's top newspapers, as well as in Sudoku books and video games.