Components

• Board with a 4×4 grid.
• 16 pieces with four characteristics each:
  • Light or dark;
  • Tall or short;
  • Circular or square; and
  • Solid or hollow.
• Each possible combination of characteristics appears exactly once.
  • e.g. light & tall & circular & solid.
  • e.g. dark & short & square & hollow.

Game Play

1. The opponent selects an unplayed piece.
2. The player places the selected piece on an empty space.

Game End

• The winner is the player who forms a line of four pieces that all share a characteristic.
  • i.e. not the opponent who selected the final piece.
  • e.g. all light.
  • e.g. all short.

Advanced variant

• A 2×2 square of four pieces that all share a characteristic also wins.