I came across a potential mismatch between theory and practice in Taisabaki 3 and 4 last weekend and took some photographs to figure it out.
The basic point is that Taisabaki #3 (hidari) is a shift to the left, so that you are offside to the opponent but still within the same range (maai
). Taisabaki #4 (migi) is a shift to the right to achieve the same but
may not put you within the same range.
Here is Taisabaki #3, with a drawing of foot positions before and after. Notice that the bokken tip is still within same range as when I start.
Here' is Taisabaki #4 if we follow theory directly which is to move directly to the right. Directly here means that your big toe on the front foot stays along the same horizontal plane, over to the right.
However, notice that the tip is now 3-4 inches away
from the opponent, indicating that your body has actually moved away from them.
To be in the same range and actually move to the right, what I needed was to move to the right and forward a little bit, as so:
Here the tip stays within the same range as before.
This happens because with one foot forward, you body is actually a little further behind. When you move left (w/ right foot forward), your body turns and moves a little forward, but when you move right, your body turns away from the opponent a little.
The commonality between the first and third image is that your chushin / hara is actually at the same distance from the opponent. That's what keeps the range / maai constant.
This is still not the same as tai-sabaki #6 which is even further forward than #4.