Tips gomoku

1. finish a 5-in-a-row (search exhaustively)
2. (optional) implicitly concede gracefully by playing away if your opponent has
   1. an open-at-the-ends 4-in-a-row
   2. two 4-in-a-rows
3. block a 4-in-a-row (usually just formed)
4. make an open 4-in-a-row (search exhaustively)
5. block an open 3-in-a-row (both "xxx" *and* "xx x") (usually just formed)
   1. with strong offense: (rare) block forming a pair of open 3-in-a-rows (don't miss the more subtle "xx x" configurations)
   2. assess your opponent's next possible move (two with "xxx" or three with "xx x")
      1. block where your opponent's move would give them a forced win
      2. assess overall game situation
         1. if they are strong in this part of the board then block where your opponent's move would give them a significant advantage
         2. if you are strong in this part of the board then block where placed stone "sees" other of your stones
6. combine offense and defense: play where you get both open 2-in-a-row(s) and block open 2-in-a-row(s)
7. work to overwhelm your opponent in some part of the board
   1. look for a forced win; be sure it is real; once you're sure then pull the trigger
   2. delay playing non-open 4-in-a-rows until you have a forced win
   3. delay playing 3-in-a-rows in favor of a forced win
   4. if you can't find a forced win then maybe an open 3-in-a-row can help build command in an area
8. avoid letting your opponent have too many stones in one area
9. divide your opponent's pieces