http://www.gamesradar.com/knights-defense/articles/   Knight Defense is what happens when chess gets the Pac-Man Championship Edition treatment. Sure, it looks like chess, but with an almost completely changed rule set (how completely? It's real-time, for one. Keep reading...) and a hyper modern presentation, it feels new. And it...http://www.gamesradar.com/iphoneipad-review-of-the-day-knight-defense-a-little-chess-a-little-tower-defense-a-lot-awesome/Jan. 21, 2011, 10:36 p.m.