Damage calculation

During damage calculation, the ATK of an attacking monster and the ATK or DEF of the attack target are compared.

The following scenarios are possible. If a direct attack is declared due to the opponent not controlling any monsters or a card effect that allows a monster to attack directly, the ATK of the attacking monster is subtracted from the Life Points of the opponent.
 * The attacking monster's ATK is higher than the ATK of the attack target in Attack Position. The attack target is destroyed and the difference in ATK strength is subtracted from the Life Points of the player who controlled the attack target.
 * The attacking monster's ATK is lower than the ATK of the attack target in Attack Position. The attacking monster is destroyed and the difference in ATK strength is subtracted from the Life Points of the player who declared the attack.
 * The attacking monster's ATK is equal to the ATK of the attack target in Attack Position. Both monsters are destroyed and neither player receives any damage.
 * The attacking monster's ATK is higher than the DEF of the attack target in Defense Position. The attack target is destroyed. Damage is only inflicted to the controller of the attack target if the attacking monster can inflict Piercing Damage.
 * The attacking monster's ATK is lower than the DEF of the attack target in Defense Position. Neither monster is destroyed and the difference in strength is subtracted from the Life Points of the player who declared the attack.
 * The attacking monster's ATK is equal to the DEF of the attack target in Defense Position. Neither monster is destroyed and neither player receives any damage.