[Retros] Last move economy record

[Mario Richter]

> 2.Where is the 14th A+B position? ...

> "Of these 178 positions two are identical for type A, B and C

> (KxQ and PxQ=N); and 14 are identical for type A and B."

> I used a spreadsheet (works) and it gave the following identical

positions:

> BxB, BxP, NxB, NxN, NxP, PxB, PxP, PxR, QxB, QxQ, QxR, RxQ, RxR which

makes

> only 13 identical positions.


There is a typo (a superfluous empty space) in the FEN for Typ A RxP.

regards,

  mario