@JeanLuc tell me please about shifting.
Indeed, in order to use the DP from the previous work, we still need to shift the range and subtract the range of the public key?

Example, what will happen if we do not shift the range (for example leading zero not used):
Start range 0, distance 1 so x coordinate  79be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798
ok we save this DP for next pazzle
New range for ex start from 32
32+distance 1 = 33 it is 1697ffa6fd9de627c077e3d2fe541084ce13300b0bec1146f95ae57f0d0bd6a5
So this DP will be incorrect
We need shift new range to zero and subtract the range of the public key.
Only in this case, in my opinion, the DP will be true.

And the second question. in your opinion .. will the predious DP help in finding a new key or is it a little extra weight since we need the points to be randomly scattered over the range, and not to be in one place?