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Задача 764: Eric Huber - Fairy (Argentinian chess, Circe, AntiCirce, neutral pieces)
eric.huber(12.11.2016) Интересна феерична задача комбинираща Argentinian chess, Circe и AntiCirce.
 
 
 
 
 
 
 
 
 
764. Eric Huber (Romania)
Dedicated to Oliver Sick
12.11.2016
764
 
 
1.nPf2-f3 nPf3xg2(nPg2-g7)(+nPg2)+ 2.Kf6-f7 nPg2-g1=nSE
3.nSEg1-g8+ nSEg8-e6 4.nPg7-g8=nFA+ Kd8-c7#
1.nPg2-g3 nPg3xf2(nPf2-f7)(+nPf2) 2.nPd2-d3 nPf2-f1=nSE
3.Kf6xf7(wKf7-e1)(+nPf7) nSEf1-c1 4.nPf7-f8=nSE+ Kd8-d7# 
 
For this problem I was inspired by Oliver Sick’s 1090 published in Julia’s Fairies which is a ser-hs#12 with both Kings and two neutral Pawns. Oliver’s 1090 is worthy of a second look. Without him the idea of combining Circe, AntiCirce and Argentinian Chess would have probably never crossed my mind, hence the dedication.
Here two neutral Pawns f2 and g2 exchange their functions between the two solutions. Mates are given by a bK move in typical AntiCirce fashion and nPd2 guards one flight in both solutions (e1 and e2).
In case you wonder, nPd2 also prevents the dual 4.g8=nSE+? d1=~! occupying the rebirth square of nSEg8.
(Author)
 
Argentinian Chess: Like ordinary chess, where all pieces are replaced by their Argentinian counter parts and pawns promote to Argentinian chess pieces. All other rules are as usual (castling, ep, …)
 
Argentinian Chess pieces:
Loco (Lo): the Argentinian Bishop, moves by hopping diagonally over a hurdle on any arbitrary square behind it, captures like an ordinary Bishop.
Faro (Fa): the Argentinian Rook, moves by hopping orthogonally over a hurdle on any arbitrary square behind it, captures like an ordinary Rook.
Senora (Se): the Argentinian Queen, Loco+Faro, moves by hopping diagonally/orthogonally over a hurdle on any arbitrary square behind it, captures like an ordinary Queen.
Saltador (Sa): the Argentinian Knight, moves like a MOA hopper + MAO hopper and captures like an ordinary MOA+MAO (MOA(MO): The Chinese knight, which is a Rider, moving along a bent line to the arrival square of a normal Knight, first diagonally then orthogonally. The MOA can be interfered with on the intervening square. MAO(MA): The Chinese knight, which is a Rider, moving along a bent line to the arrival square of a normal Knight, first orthogonally then diagonally. The Mao can be interfered with on the intervening square.).
 
Circe:Captured units (not Ks) reappear on their game-array squares, of the same colour (pieces), on the file of capture (pawns), or on the capture file’s promotion square (fairy pieces). If the rebirth square is occupied the capture is normal. 
 
Anti Circe: After a capture the capturing piece (Ks included) must immediately be removed to its game array square (necessarily vacant, else the capture is illegal). R, B & S go to the square of the same colour as the capture; Ps stay on the file of capture; fairy pieces go to the promotion square of the file of capture.
 

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