Fairy chess composition

# No.728 (CP)

 No.728 Cornel Pacurar(Canada) Original Problems, Julia’s Fairies – 2015 (I): January – June    →Previous ; →Next ; →List 2015(I) Please send your original fairy problems to: julia@juliasfairies.com

No.728 Cornel Pacurar – Series Retractor showing the BB/SS/RR/QQ uncapture pairs. (JV)

Definition:

Series Retractor: In the retro phase, White or Black retracts a series of legal moves.
-n [w|b] & forward stipulation: White and/or Black retracts (takes back) a given number of moves (-n moves), in order to reach a position in which a forward stipulation is met.

 No.728 Cornel PacurarCanadaoriginal – 18.02.2015Dedicated to Kjell Widlert Solutions: (click to show/hide) white   kc6 black kf3 pf7h4 -2b & h=1                                   (1+3)b) Ph4→f5 ; c) Ph4→e6 ; d) Pf7→d3 {(no animation for retractors for now (JV)) } a) -1.Kg3×Bf3 -2.Kh3×Bg3 & 1.f7-f5 Bg3-f4= (BB) b) -1.Kg2×Sf3 -2.Kh1×Sg2 & 1.f7-f6 Sg2-f4= (SS) c) -1.Kg4×Rf3 -2.Kf5×Rg4 & 1.Kf5-e5 Rf3×f7= (RR) d) -1.g5×Qh4 -2.h6×Qg5 & 1.h6-h5 Qg5-d2= (QQ)

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Kjell Widlert
February 19, 2015 17:49

The perfect complement to 716.1 with all possible pairs of different uncaptured pieces (disregarding pawns):
here we have all possible pairs of two equal uncaptured pieces!

It took some ingenuity to arrange for the QQ solution, I assume, as the bK cannot make the first uncapture and the order of the moves still has to be unique.

Kjell Widlert
February 19, 2015 17:50