Frame Advantage and Punish Windows

What frame advantage measures

When an attack is blocked, both players are briefly locked in place. The attacker is finishing the recovery of the move, and the defender is held in block stun. Frame advantage is the difference between the two: how many frames earlier one side can act than the other.

A positive number, such as +3, means the attacker recovers three frames before the defender and gets a small head start. A negative number, such as -6, means the defender recovers first and can act while the attacker is still helpless. The figure is usually listed in move data for both the case where the move hits and the case where it is blocked, and the block figure is the one that matters most for pressure and defence.

One frame is roughly 1/60 of a second, so these gaps are far too small to react to consciously. They matter because they decide which moves can be used in the gap, not because players see them. The basics of how a move is built from startup, active and recovery are covered in the introduction to frame data.

Minus on block and the punish window

If an attack is -6 on block, the defender has a six-frame window in which they can start an attack while the attacker is still recovering. Roughly speaking, any defender move with a startup of six frames or fewer can be expected to connect before the attacker can respond. That is the punish window.

The size of the window tells you how severe the punishment can be. A move that is -2 on block can usually only be punished by the fastest attacks in the game, and the reward is small. A move that is -15 may allow the defender a heavy attack or a full combo, because there is enough time to start a slow, damaging move.

Two cautions apply:

• Counting conventions vary between games, so a simple “startup equals minus” rule is approximate. Training mode usually shows the exact result.
• Distance matters. A defender can only punish if the punishing move reaches the attacker. A move that is very negative but that pushes the opponent far away may still be difficult to punish, since a quick attack falls short.

This is why some moves are called safe even with a slightly negative number. A move that is -2 and also pushes the opponent out of range of their fastest attack is, in practice, safe.

Plus on block and keeping the initiative

A positive frame advantage means the attacker acts first. The practical result is that a second attack can follow before the defender can do anything but block. If an attacker is +4 and uses a follow-up with a 4-frame startup, the next hit lands essentially at the moment the defender becomes free, so there is no gap for the defender to escape through.

With a follow-up that has a longer startup, a gap appears. Take an attacker who is +2 and uses a move with 5 frames of startup. The gap is about 5 − 2 = 3 frames. During those frames the defender is free to act, so a very fast defensive move might interrupt the attacker. A defender whose fastest move takes longer than the gap cannot interrupt, and the attacker’s follow-up hits.

Because attackers know defenders may try to interrupt, some gaps are deliberate. A frame trap is a sequence with a small gap built to punish an impatient defender: if the defender presses a button to escape, they are hit by the attacker’s counter-hit, which often does extra damage or leads to a longer combo. If the defender keeps blocking, nothing is lost.

The risk side of pressure

Pressure is a negotiation, and neither side has a free choice. The attacker chooses between continuing, stopping or switching to another option, such as a throw. The defender chooses between blocking, pressing a button or using a defensive option such as a reversal. Each choice beats some options and loses to others, so the exchange resembles a guessing game, which is the subject of the article on mix-ups.

Using the same pressure repeatedly gives the defender a chance to learn it. A player who always ends a sequence with a small gap will eventually meet someone who exploits it. Mixing between a real gap, a no-gap follow-up and a pause is one way attackers keep defenders honest. That kind of unpredictability is explained under mixed strategies.

For the defender, a good habit is to identify which blocked moves are punishable and which are not before trying to punish anything. Punishing a safe move can backfire, since the defender may be hit while attempting it. A missed punish can be more costly than a missed opportunity.

Using the idea in practice

1. Look up the on-block number of the moves you use most and sort them into safe, slightly unsafe and clearly unsafe.
2. Practise the specific punish for the most common unsafe moves you meet. Players usually only need a handful of memorised responses.
3. In your own pressure, count the gap between your blocked move and the next one. If you do not know it, you cannot tell whether you are being interrupted by luck or by design.
4. Test the number in training mode, because patches may have changed it and published tables may lag behind. Recording a few sets and reviewing them can show which blocked moves you leave open.

Frame advantage is a simple idea, but it underlies much of how pressure and defence work. It tells you who gets to act first, and from that you can estimate how much risk each option carries.