[Retros] Add units: 21st update

[Alain BROBECKER]

Dear retro-friends,



As usual the update is here:

http://abrobecker.free.fr/chess/addunits.pdf


modified 1BA, 1NA

modified authorship of 1QA and thus removed VII

moved N1PCi' to the solution of N1PCi



As stated by Michel, i just don't feel like adding

all records. Maximum and "minimum" number of units

are enough.



I think i have to make a difference between

6A and 5A in respect to the promoted pieces,

and so will keep this distinction for higher

number of units only (where it sounds the more

sensible anyway?).



6C remains as a minimum (if we forget about 1KC),

but anyway even if a 2C pops out, Dmitrij's problem

would make its way into the appendix.



Best regards,

Alain