Square (スクエア Sukuea) is the place where Z/X, Z/X Extra, and Z/X Overboost cards are played in the playing field.
There are 2 different types of Square, Normal Square and Player Square, with the latter also doubles as the place for Player Card. The playing field itself is composed of 9 Squares (2 Player Square and 7 Normal Square) in a 3×3 grid, further divided into 3 different areas based on their position to the player—Army Area, Center Area, and Enemy Army Area.
Once a Z/X is played and put on a Square, it cannot be moved onto another Square, except by a card ability. Most card abilities or effects affect Z/X on Square, and often specifically designate which Square it affects, either by mentioning the Square type or by using the Square Designation Diagram.
Comprehensive Rules[]
303 Square
303.1 Zone where the cards with Player and Z/X, Z/X Extra, Z/X Overboost, Shift, or Link card type are placed.
303.2 Square is shared by both players, there are 9 Squares in total, lined up in 3×3 grid. Vertically or horizontally adjacent Squares are both Squares next to each other. Diagonally adjacent Squares are not.
303.2a The meaning of distance from a certain Square to another Square, and also as a reference, is the smallest amount of Squares that are able to reach the other Square, counting from the Square next to that certain Square.
Example : Distance to the next Square is 1.
Example : Distance to the diagonally positioned Square is 2.
303.3 All Squares are either a Normal Square or a Player Square.
303.3a Among the Squares, the 2 Squares that were vertically adjacent to the middle Square are Player Squares.
303.3b Among the Squares, the 7 Squares that are not Player Square are Normal Squares.
303.4 Squares may belong to groups called Area.
303.4a For a player, their own Player Square (402.1a), as well as Squares next to it except the middle one, belongs to Army Area.
303.4b For a player, the opponent's Player Square (402.1a), as well as Squares next to it except the middle one, belongs to Enemy Army Area.
303.4c Squares that do not belong to Army Area or Enemy Army Area belong to Center Area.
303.5 Cards put on Square have either Reboot or Sleep State (302.2).
303.5a If a card is put on Square from anywhere except from Square, it is put in Reboot State.
303.6 If a text refers to "Z/X" without specifying a particular zone, it refers to cards with Z/X, Z/X Extra, and Z/X Overboost card types on Square. Likewise, if a text refers to "Player" without specifying a particular zone, it refers to cards with Player card type on Square.
303.6a If any effect tries to move a card with Player card type to another Square, that card does not move.
303.7 Square is a public zone. It is possible to arbitrarily change the order of cards in your control that you put on Square.