CalcoTools Games

Five Row

Place stones on a 13 by 13 board and be first to line up five in a row, across, down or diagonally. Three computer levels, and the hardest one hunts for forced wins.

How to play

  1. You play the blue stones and move first. Tap any empty point to place a stone.
  2. Players take turns. Stones never move once they are placed.
  3. Make an unbroken line of five or more of your stones, across, down or diagonally, to win.
  4. If the board fills up with no line of five, the game is a draw.

Tips and strategy

  • Start near the centre. Stones in the middle have room to grow lines in every direction.
  • An open three (three in a row with both ends free) forces a reply. Ignore it and it becomes an unstoppable open four.
  • Look for a move that makes two threats at once, such as a four and an open three. The computer can only block one.
  • Block the computer's open threes early rather than waiting for a four.

FAQ

Does a line longer than five still win?
Yes. Five or more in an unbroken line wins, so there is no penalty for overshooting.
Why is the first move an advantage?
Whoever moves first gets a head start building threats, which is why you always move first and can pick an easier computer level to practise.
How strong is the hard level?
Hard looks one reply ahead and searches for chains of four-threats that cannot be defended. It is a real challenge, but it does not see everything.