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Problem 954: Anatoly Stepochkin - Fairy (KoBul Kings, KoKo, Princess)
anatoly.stepochkin(28.12.2018) Fairy Miniature by Anatoly Stepochkin with nice combination of KoKo and KoBul Kings with Echo mates by the Royal Princess.
954. Anatoly Stepochkin (Russia)
1.0-0-0 Ka6 2.Rhe1 PRa5 3.Re2 PRd2+ 4.Rexd2(a6=rPR) ePRd3#
10-0 PRg2 2.Rf3 PRf1 3.Raxf1(a5=rPR) rPRe1 4.R3f2+ rPRf3#
Echo mates (Author)
Princess: Bishop + Knight
Koko Chess (Contact Chess): a move is legal only if the arrival square is adjacent to any piece, this applies also to the capture of king.
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. 



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