How to play Gomoku (Connect 5) - Tic Tac Toe variant

Introduction to Gomoku

Gomoku

Gomoku is one of the board games. However, it can be played as a paper-and-pencil game. 
This game is played on a 15 x 15 board. 


Rules in Gomoku

Players alternately placing the stone of their colour on the board. Black plays first. The main objective of this game is to form an unbroken chain of  5 stones vertically, horizontally, or diagonally.

Example game 1

Gomoku example game 1

Black wins this game because the player manages to form a chain of 5 stones horizontally.

Example game 2

Gomoku example game 2

White wins this game because the player manages to form a chain of 5 stones diagonally.

Example game 3

Gomoku example game 3

if the placement of stone forms a line of nore than 5 stones of the same colour, it is not considered a win.😁



Common Winning Position

4 stones are placed horizontally, vertically, or diagonally where no block is blocking its way

Gomoku: Common wining position 1

In this case, the player gives the opponent 2 choices to place the stone. Thus, it is unblockable and the black will win this game.



2 groups of 3 stones are placed in which one of the stones is shared between 2 groups of stones 

Gomoku: Common wining position 2

In this case, the player gives the opponent 2 choices to place the stone. When the opponent block one of the 3 stones group, the other group of 3 stones will form a 4 stones formation which is unblockable. So the black will win this game.



1 group of 3 stones and 1 group of 4 stones are placed in which one of the stones is shared between 2 groups of stones

Gomoku: Common wining position 3

In this case, the player forces the opponent to block the 4 stones. Then, the other group of 3 stones will form a 4 stones formation which is unblockable. So the white will win this game.



3 stones are placed between 2 stones at both sides with a space

Gomoku: Common wining position 4

In this case, the player gives the opponent 2 choices to place the stone. Thus, it is unblockable and the white will win this game.



2 group of 4 stones are placed in which one of the stones is shared between 2 groups of stones 

Gomoku: Common wining position 5

In this case, the player gives the opponent 2 choices to place the stone. Thus, it is unblockable and the white will win this game.



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