In 2003, Icheng Wu (I-Chen Wu), a professor at Taiwanese National University Chao Tung at the Faculty of Computer Science and Information Technology, proposed a new game Connect6 (Connect6). The strategy of the game is very similar to Gomoku.

Two players alternately lay out two stones of their own color, black or white, on empty intersections of the board 19 to 19. Except for that, the first player (playing black) lays out one stone in the first move. Anyone who gets six or more stones in a row (horizontally, vertically, or diagonally) wins. Sometimes the game also uses a board of 15 to 15. During the year, this game has gained massive popularity on the Internet.

Connect6 rules are very simple and look like a traditional Gomoku game.

There are two players. Black plays first, and second White. Each player plays with the corresponding color of stones, as in Go and Gomoku.

So, we see differences from gomoku:

Each lays out 2 stones per turn.
The winner is the one who received a row of 6 or more stones. In Gomoku, there should be exactly five in a row.
According to Professor Wu, the black handicap is that he puts only 1 stone on the first move. This compensates for the advantage of the first move. Therefore, no additional debut regulations or fouls are required, as in Gomoku or Renju.

If for Gomoku, the inequality of chances for victory for whites and blacks was calculated mathematically, then for Connect there are no such calculations yet. But as practice shows, the chances in Connect6 are about equal. However, this question remains open.