Noun
renju (uncountable)
The professional variant of the game of gomoku, played on a 15×15 board, and eliminating the "perfect win" situation in gomoku by adding special conditions for the first player.
In 2001, the winning strategy was also approved for renju, a variation of gomoku, when there was no limitation on the opening stage. Source: Internet
Pente is based on the Japanese game ninuki-renju, a variant of renju or gomoku that is played on a Go board of 19x19 intersections with white and black stones. Source: Internet