Original Problems, Julia’s Fairies – 2014 (I): January – April
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No.490 by János Mikitovics – A nice chameleon-echo! (JV)
Swapping Kings: If a move exposes the opponent’s King to a check under normal rules, then the two Kings are switched, and check or checkmate is newly evaluated, and of course a move is illegal if after such a switch one’s own King is in check.
Berolina-Pawn(BP): Walk and capture are swapped relative to the orthodox Pawn. The Berolina-Pawn moves without capturing diagonally (possibly two squares if it is on the second row of its side) and captures vertically.
Berolina Super Pawn(BS): It is Berolina-Pawn but its moves and captures are respectively extended to the entire diagonal and the entire column.
No.490 János Mikitovics
h#3 b) Se4→d2 (2+3)
Berolina superpawn e3
Berolina pawn e2
Solutions: (click to show/hide)
a) 1.BSe3-c1=S Se4-c5 2.BSe2-f1=R[Kg4↔Kf2] Kg4-f4 3.Sc1-d3[Kf2↔Kf4] + Sc5xd3[Kf4↔Kf2] #
b) 1.BSe2-f1=S Kf2-g2 2.BSe3-g1=R[Kg4↔Kg2] Sd2-c4 3.Sf1-e3[Kg2↔Kg4] + Sc4xe3[Kg4↔Kg2] #
(C+ by Popeye 4.63)
Exchange of promotions, chameleon echo. (Author)