Defense
In 2D Fighting Games, there are generally 3 types of defense: The Low Block, The High Block, and the Air Block.
In order to block an attack in a 2D fighter, you simply need to press 4, or 1, both of which are backwards directions described in the post above. In short, just hold back when someone attacks you, and you will block their attack.
However, different attacks will have different properties, and will need to be blocked in different ways. The 3 properties an attack can have are: Low, Mid, High.
Low Attacks: An attack that can only be blocked with a low guard. Any attack the opponent makes while they're on the ground is an attack that can be blocked by low guarding, so if the opponent is attacking you on the ground, you better be holding 1. An opponent will only be able to attack low if they're on the ground. No exceptions. Block Low attacks with a Low guard.
Mid Attacks: An attack that can be blocked with either a High Block or a low block. It doesn't matter if you're using 4, a standing guard, or 1, a crouching guard, you will be able to block a mid attack. Mid attacks are almost always ground-based, and so an opponent will only be able to use mid-attacks if they're on the ground as well. I recommend blocking mid-attacks with a low guard, though in reality it doesn't matter how you block them.
High Attacks: An attack that can only be blocked with a standing or high guard [4]. Any attack the opponent makes in the air will be a high attack, and therefore, if your opponent is in the air, you better be holding 4 by default. There are also exceptions called "Overheads", which is a move an opponent can use on the ground in which you have to block high. Overheads will almost always be slow, fairly obvious, and some even come with a special sound or visual to warn the person defending. So if the opponent is in the air, high guard/standing block them, and if they're on the ground, the only time you'll need to high block is if they use an overhead.
Air guarding: Air guards will only be able to block air attacks and a few specials the opponent may do; though a almost universal rule is that an air guard cannot block a ground-based attack. In fact, There is no air guarding in Street Fighter at all.
Throws: An attack the opponent can use that cannot be blocked with any sort of block, however the opponent must be very close to use this, and can be hit as he attempts to grab you.
Simply put:
- 1. If the opponent is on the ground, you need to be blocking low with a crouching guard, or 1.
- 2. If the opponent is in the air, you need to be blocking high with a standing guard, or 4. The only time this pattern breaks is when the opponent uses an overhead, which is a ground attack you need to block high. These come with their fair share of warning, though you will need good reaction time to block these.
- 3. Any ground based attack the opponent uses cannot be blocked with an aerial guard, and is a good form of anti-air.
- 4. You cannot block a throw.