Gomoku
Gomoku, also called "Five in a Row", is an abstract strategy board game. It is traditionally played with Go pieces (black and white stones) on a Go board, using 15×15 of the 19×19 grid intersections. Because pieces are not moved or removed from the board, Gomoku may also be played as a paper-and-pencil game. The game is known in several countries under different names.
Rules of Go
Handicaps are given by allowing the weaker player to take Black and declaring White's first few moves as mandatory "pass" moves. In practice, this means that Black's first move is to place a certain number of stones (usually the number is equal to the difference in the players' ranks) on the board before allowing White to play. Traditionally, the hoshi ("star points") – strategically important intersections marked with small dots—are used to place these handicap stones. On the board, there are nine star points: at the four 4–4 points in the corners, at the four 4–10 points along the sides, and one at the 10–10 point (the centre of the board, or "tengen" in Japanese). Smaller boards such as the and also have star points. The has 9 at the 4–4 points, 4–7 points, and the center. The board has only 5 points: the 3–3 points and the center.