Magazine article Word Ways

# Class of 13 (See Back Cover)

Magazine article Word Ways

# Class of 13 (See Back Cover)

## Article excerpt

The grid contains exactly 13 nodes and 13 lines. Each node is on three lines and each line lies on three nodes. In addition there are exactly 13 letters and each letter is used exactly three times to trace out the 13 lines. We propose several puzzles and games that use this grid.

Puzzle 1: The grid should obviously have a copyright on it. Do you see why?

Game 1: Two players can play tic-tac-toe on the grid trying to obtain a letter line. To make things fair for both players we allow only six turns for each combatant. Thus if first has no win in six moves the win is awarded to second.

Unlike ordinary tic-tac-toe, which is a draw when played expertly, this game has a forced win for one of the players. Can you find it? …

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