Do double six always win in the board game risk for attacker?

No, double sixes do not always win in Risk for the attacker.

Here's why:

* Defense matters: The defender also rolls dice. If the defender also rolls a double six, the attacker loses the battle.

* Number of dice: The number of dice each player rolls depends on the number of armies they have on the territory. If the attacker has more armies, they roll more dice, and vice versa. The defender only rolls one die if they have one army on the territory.

* Battle resolution: The highest dice are compared, and then the second highest, and so on. This means that even with a double six, if the defender rolls high enough, they can still win the battle.

Example:

* Attacker: 3 armies (rolls 3 dice) - Double Six and a 5

* Defender: 1 army (rolls 1 die) - A 6

In this case, the attacker would win because they have two dice higher than the defender's single die.

The key takeaway: While double sixes give the attacker a good chance, they are not a guaranteed win. The defender's dice roll and the number of dice rolled by each player all play a role in determining the outcome.