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Problem 1018: Karol Mlynka - Fairy (KoBul Kings, Einstein Chess, Circe Parrain)
(31.12karol.mlynka.2019) Interesting combinations of fairy conditions in Tanagra form.
1018. Karol Mlynka (Slovakia)
Pser-H#4       2 sol.             (3+2)
KoBul Kings & EinsteinChess & ParrainCirce

1.Kb2-c2 2.Kc2-d3 3.Kd3xe2[e1=rS]+ c3xb4=S[e2=rS][+wSd3]
4.rSe2-g3=P[+bSd5] Sd3-f2=P#
1.Sb4-d3=P 2.d3xe2=S[e1=rS] 3.Kb2-a1[+wSd1]
4.Se2xc3=B[e1=K]+ Sd1xc3=B[a1=rB][+wPb5]#
Tanagra. Popeye Windows-64Bit v4.79 (Author)
Circe Parrain: The captured units are reborn on a square which depends on the move following the capture (hence a move by a unit of same color, called the godfather unit). The step from the capture square to the rebirth square is given by (is equipollent to) the godfather-move. Rebirth only occurs if the rebirth-square is empty. Pawns may be reborn anywhere: on the 8th rank they are promoted, on the 1st rank they may only make a single move. If the godfather move is castling, then the rebirth-move is a King move followed by a Rook move.
Einstein chess: every time a piece moves (without capturing), it "loses energy" and transforms itself ("is demoted") into a smaller unit, one step down the ladder from Queen to Rook to Bishop to Knight to Pawn. Every time a piece captures, it gains energy and   transforms itself ("is promoted") into the next bigger unit. Kings do not transform. A capturing Queen-move or a non-capturing   Pawn-move does not lead to any transformation.There are no promotions. So that you can have pawns on the 8-th rank   (where they are stuck). You can also have pawns on the 1st-rank (after a non-capturing Knight move): these pawns can make a single, double  or triple step forward. After a double or triple step,   they can be captured en-passant by an enemy pawn on the 3rd or 4th rank.   After a triple step, en-passant capture can take place on two different   squares!
KoBul Kings: when a piece (not a pawn) of his own side is captured, a King transforms into a Royal piece of the same type as the captured one. When the King is in the form of any Royal piece and there is a capture of one of the pawns of his own side, he becomes a normal King again. Captures are illegal if they result in self-check by the transformed King. Castling is allowed only if the KoBul King is on his initial square in the form of a normal King and if he has not already moved; however he may already have been transformed. 
In the case of capture by a King in AntiCirce he is reborn on his initial square and may castle. If the capture is by a King which is in the form of some Royal piece, he is reborn on the initial square of that piece.

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