Knife techniques have only four basic movements.
That is: stab outwards, stab inwards, cut
outwards and cut inwards.
This is how these movements can be used. You
see:
That's how these movements are used in sports,
they must be combined, and the main skill
you must learn when training for sports is
speed. You must do it very quickly.
You see? But in real life you must attack
the hand with the knife. It's not very important
for you to harm your opponent, it is important
to disable him from harming you.
The main movement we need is cut outwards.
I'll explain you why. Because it's the main
movement for self-defence from a knife attack.
You see, what is the difference between sport
fencing and real self-defense? The main difference
is: when you are a sportsman, and you are
fencing on knives, you are hit ten times and
you hit eleven times, and you are a champion,
and it's ok for you. But in real life if you
are hit only one time - you are dead. So in
real life if you are self-defending with a
knife, your task is to be hit zero times.
And as your knife is in your right hand and
your opponent's knife is also in his right
hand, the only way you can block his hand
and cut is this way, so that you can block
it, you can use the weight of your body to
block the hand. So it is 
the cut outward.
If you cut the
hand inward, you may cut it but 
you won't block the hand, so 
the hand that is cut nevertheless will touch
your body with the knife. Like this.
I can cut it inwards, but I won't block it,
and this hand will go into me, into my body,
if I do it this way.
So I must do it this
way.
Afer you do it freely with a long knife, try
to take something shorter, because it's not
very probable that you have a long fighting
knife when being attacked, but it's ok to
carry a short pocket knife or multitool with
you.
The only defference is that you must be more
precise and accurate when implementing this
technique. That's all.
So, how can we work the defense out? We take
our favourite gymnastic bars, put it at the
level of the body, and take a knife. Let's
take a real knife, it makes the exercise more
interesting. We attach it to the gymnastic
bars, and begin to work.
ok, it is attached quite firmly now
You take the stance and begin to work. The
distance is the maximum distance of a knife
fight. First you try to make a short step
to touch the hand with the knife without cutting
yourself, without doing like this. Because
it'sa real knife and you'll be really cut
and hurt.
After you do it freely try to block it with
the other hand, with the left hand.
Because the real defensive technique is to
block the hand with a knife with two hands.
And in order to make a real cut that will
disable your opponent finally you must do
a movement like this. One hand, the left hand,
moves outwards to the left direction and the
right hand with a knife cuts outwards to the
right direction.
So we do it like this.
If you manage to do it that means that you
succeeded in defending yourself, because the
opponent's hand with a life will be absolutely
disabled.
