Quarto

A deceptively simple strategy game with a unique twist: your opponent chooses which piece you must play.

Rules

Pieces

There are 16 unique pieces, each with 4 binary attributes:

• Tall or Short
• Light or Dark
• Round or Square
• Hollow or Solid

Every combination exists exactly once.

Turns

Each turn has two phases:

1. Place the piece your opponent selected for you on any empty cell
2. Select a piece from the remaining pool for your opponent to place next

On the very first turn, the first player only selects a piece (nothing to place yet).

Winning

Get four pieces in a row (horizontal, vertical, or diagonal) that share at least one common attribute. For example: four tall pieces, or four round pieces, regardless of their other traits.

Draw

If all 16 pieces are placed with no four-in-a-row sharing an attribute, the game is a draw.