http://pastport.jp/user/Wuyahong/timeline/The%20three%20What%20If%20upgrade%20favorites%20you%20should%20purchase MsDossary says: "When my depth is high I'm looking for my opponent to push me. That's my game style and what I'm looking for." Setting your tactics in advance could have a major influence on your game. It is easy to change tactics when one doesn't work. I ja-JP