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.
The Duke (board game)
Each player begins game with three pieces: two "footmen" and one eponymous "duke" tile. Each piece, a flat, wooden tile (known as "troop tiles") has its movement options graphically portrayed on its two sides, giving it alternating movement options based upon which side of the piece is currently facing upwards. Pieces are moved to either an unoccupied square or one occupied by an opponent's piece, which is then captured and removed from play. Each turn, players must move a piece, place another piece on the board, and use any special powers if applicable. The objective in a standard game is to capture the opponent's duke, by first placing the duke into "guard", a condition paralleling check in chess.