Twin must be b) Bf8->h7.
For interchanges of pieces, see M. Caillaud, Prize, Nunspeet 2000: 1. e4 c6 2. e5 Qa5 3. e6 Kd8 4.…
My position was with the WP on the a-file hs#6.5. The rook promotion of the white pawn did not strike…
Thanks Petkov.. I thought of something similar (not so economical!) but Vito Rallo seemed more interested in line opening for…
[img]https://juliasfairies.com/wp-content/uploads/2014/06/553-ver2-pap.png[/img] 1 - 5 . b8=R c1=R 6.Rg8 Rh1 7=Rg2+ Kxg2# Probably this position is even better, because here all…
Petkov's magic ever comes out in any position; just witness how the Q promotion gets replaced by the R!
The following Miniature is possible - with only 6 pieces and 2 Excelsiors with R-promotions: [img]https://juliasfairies.com/wp-content/uploads/2014/06/553-ver1-pap.png[/img] 1.b4 f5 2.b5 f4…
Thanks Alexandr. I made a similar suggestion in my second post. Miniature with white excelsior and black rook promotion! white…
Here is another version. White Ph6 Kg5 Ph5 Pe2 Black Ph7 Ke6 Pc4 Re4 HS#7 C+ 1.e2-e3 Re4-d4 2.e3-e4 c4-c3…
As I never worked under Anticirce, I will not begin with a too difficult theme, but maybe I will try…