Pente for

From MKSoft:

Pente is the English name of the Asian game of ni-nuki, which is itself a version of the game of go-moku.

Pente is played on a 19x19 grid with stones in two different colors. Each player chooses one set of stones; then the players take turns placing their stones on any unoccupied intersection until one player wins.

There are two ways to win: If a player gets five or more stones in a straight line (across, down, or diagonally), or captures five pairs of the opponent's stones, that player wins.

Stones may be captured in pairs only. To capture a pair of stones, a player must place one stone on either side of the pair. When the second side is placed, the center two stones are captured. This counts as one capture. The game continues until a player gets 5 in a row or captures 5 pairs.