No.852 (IK)

No.852 
Igor Kochulov 
(Russia)

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Original Problems, Julia’s Fairies – 2015 (II): July – December

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No.852 by Igor Kochulov – Neutral duplex, determined by Back-to-Back condition. (JV)


Definition:

Back-To-Back: When pieces of opposite colors stand back-to-back with each other on the same file (white piece is on the top of black!), they exchange their roles. A pawn on the first rank cannot move. Any piece can make an en passant capture when it has got a role of Pawn by Back-To-Back.


No.852 Igor Kochulov
Russia

original – 06.07.2015
Dedicated to Geoff Foster

Solutions: (click to show/hide)

Neutral Ke6 Qd4 Se8

h#2                Duplex         (0+0+3)
Back-to-Back


One Response to No.852 (IK)

  1. Geoff Foster says:

    I like how 1…Sg8 must be played before 2.Kf7. Which is better – Duplex, or (b) Face-To-Face?

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