Gomoku

How to play

Renju, the classic five-in-a-row of Japan and China, played on the lines of a 15×15 board. Place a stone each turn; the first to make an unbroken line of five — horizontal, vertical or diagonal — wins. Simple to grasp, sharp to master.

Rules

  • Tap any empty intersection to place a stone there.
  • Make an unbroken line of five of your stones — horizontal, vertical or diagonal — to win.
  • The AI replies immediately after every move, watching for its own lines and blocking yours.
  • If the board fills with no line of five for either side, the game is a draw.

Tips

An "open three" (three in a row with both ends free) becomes an unstoppable open four next turn, so make your own and block the AI's the moment they appear. Try to build two threats at once — the AI can only block one.