You can outthink your opponents and find weaknesses in their fighting style.
Prerequisite: Int 15, Combat Expertise.
Benefit: After 1 round of combat, you can designate one opponent and try to find ways to gain an advantage by using brains over brawn. This requires a move action that does not provoke an attack of opportunity and an Intelligence check with a bonus equal to your base attack bonus. If the check succeeds (DC 15 + opponent's base defence bonus), you find ways to outthink your opponent and notice weaknesses in his opponent's fighting style. For the rest of the combat you may use your Intelligence bonus in addition to your Strength or Dexterity bonus on attack rolls.