Reciprocal battery transformation

Two pieces of the same color create in a single line of play two batteries in which their front piece and rear piece roles are exchanged.

Meinking, Daniel E.

Wiehagen, Rolf

F. Abdurahmanovic-60 JT, StrateGems, 2000

2nd Prize

Example: Reciprocal battery transformation
h#4.5 2.1... (4+9)

1...Re2 2.Kc4 Rxa2+ 3.Kb3 Rf2 4.Bb1 Be2 5.Ka2 Bc4#
1...Be2 2.Ke4 Bxg4+ 3.Kf4 Bd1 4.g5 Re2 5.Kg4 Re4#

View in Helpmate Analyzer

FEN: 8/8/6p1/3knb2/6p1/p5p1/p5P1/r3RB1K

External links:

Meinking, Dan

StrateGems, P. Petkov-60 JT, 2002

Spec. Prize

Example: Reciprocal battery transformation
h#3.5 2.1... (4+8)

1...Rc4 2.Kd5 Ra4+ 3.Ke4 Ra3 4.Kf3 Bd5#
1...Bc4 2.Kc5 Be2+ 3.Kb4 Bd1 4.Ka4 Rc4#

View in Helpmate Analyzer

FEN: 8/8/3k4/bq2n3/3n1pp1/1B6/1PRr4/4K3

External links: