I'm new to this board, and did not find any references to Parry Series -- a new 'hybrid genre' invented by yours truly about a year ago. I wanted to introduce everyone here to this new and exciting field of composing!
Definition: A parry series-mover differs from standard series -- prior to the last move -- as follows:
- the series-side may give check during the series
- when checked, the idle-side must immediately "parry" the threat
- a parry-move may be helpful or defensive, depending on the stipulation
- after a check-and-parry, the series-side continues the series
Parry Series problems are generally denoted pser-*. Less-common varieties where the series-play is helpful are presented as phser-*. In the examples below, parry-moves are underlined.
Here are a couple of samples that show how Parry Series works:
Dan Meinking, StrateGems 2009
pser-h#6 (2+5) C+ [parry-series h#6]
1.h1Q 2.Kh2 3.Qc1+ Sf4 4.Qc6+ Se6 5.Qc1+ Sg5 6.Qh1 Sf3#
Dan Meinking, MatPlus Forum 2010
phser-s#12 (5+2) C- [parry-series hs#12]
1.Rh1+ Sh6 2.Rc8+ Kg7 3.Rg1+ Kf7! 4.Rf1+ Sf5 5.Rc7+ Ke6 6.Sc5+ Kd5 7.Rd1+ Sd4 8.e4+ Kc4 9.Sb7+ Kb3 10.Sa5+ Ka2 11.Rc2+ Ka1 12.Sb3+ Sxb3#
George P. Sphicas, StrateGems 2009
pser-s=10 (3+2) C- [parry-series s=10]
1.b8Q 2.Qb2+ Sxb2 3.h8Q 4.Qa8+ Sa4 5.Qh1+ Ka2 6.Qb1+ Ka3 7.Qe1 8.Kb1 9.Ka1 10.Qc3+ Sxc3=
For more info, visit the Parry Series Hub repository at:
http://www.alphasleuth.com/pages/parry-series.php
--Dan Meinking
