No.890-892 (PH)

No.890, 891, 892 
Peter Harris (South Africa)


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

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No.890, 891, 892 by Peter Harris – A very pleasant series of dedications to JF judges of 2014:
Vlaicu Crisan, Dmitri TurevskiKjell Widlert! (JV)


Sentinels: When a piece (Ks included but not pawns) moves, a pawn of the same colour appears on the vacated square unless that square is on the first or eighth ranks or there are 8 pawns of that colour on the board already.

Sentinels Pion Advers: When a piece (not a Pawn) moves, a Pawn of the colour of the opposite side appears on the vacated square if it is not on the first or the last rank, and if there are less than 8 Pawns of that colour on the board.

Anti-Circe: After a capture the capturing piece (Ks included) must immediately be removed to its game array square (necessarily vacant, else the capture is illegal). R, B & S go to the square of the same colour as the capture; Ps stay on the file of capture; fairy pieces go to the promotion square of the file of capture.

Anti-Andernach: A piece (excluding King) changes its color after any non-capturing move. After capture, the piece retains its color. Rooks on a1, h1, a8 and h8 can be used for castling, provided the usual other rules for that move are satisfied. After castling, Rooks do not change color, If White makes a non-capturing move with neutral or halfneutral piece, that piece becomes black and vice versa.

Ultra-Patrol Chess: A piece can move, capture or give check only if it is observed by a piece of its own side.

Isardam: Any move, including capture of the King, is Isardam illegal if a Madrasi-type paralysis would result from it. Madrasi: Units, other than Kings, are paralysed when they attack each other. Paralysed units cannot move, capture or give check, their only power being that of causing paralysis.

Maximummer: Black must play the geometrically longest move or may choose from among longest moves of equal length, distances being measured from the center of each square. Diagonal and oblique distances are measured from the orthogonal coordinates by using Pythagora’s theorem (take the square root of the sum of the squares of the orthogonal distances). All other orthodox chess rules apply.
White Maximummer: Only White must play the geometrically longest moves, Black plays orthodoxal. Black Maximummer ultra: Black’s only legal move is his longest – calculated per maxi rules.

Chameleon Chess: All pieces on the board which are displayed as orthodox  Q, R, B, S,  are Chameleons. A Pawn can promote only in Chameleon-pieces.

Royal piece: Piece that executes a function of the King on the board.

No.890 Peter Harris
South Africa

original – 13.09.2015
For the judge of JF-2014/I
Vlaicu Crisan.

Solutions: (click to show/hide)

white kf4 rf3 black kc4 rc3 bh7

hs#2.5        2 solutions            (2+3)
Sentinels Pion Advers
Anti-Andernach Chess
Ultra Patrol

No.891 Peter Harris
South Africa

original – 13.09.2015
For the judge of JF-2014/II
Dmitri Turevski

Solutions: (click to show/hide)

white royal qd8 white ra1h8 bh4 pc4 black royal qd1 black ra8h1 ba4

h=3              b) hs#3              (5+4)
Royal Qd8, Qd1

No.892 Peter Harris
South Africa

original – 13.09.2015
For the judge of JF-2014/III
Kjell Widlert

Solutions: (click to show/hide)

white kg7 black sh5

hs#8          b) Kg7→b3            (1+1)
Black Maximummer Ultra
White Maximummer
Chameleon Chess

3 Responses to No.890-892 (PH)

  1. Kjell Widlert says:

    892: Many thanks for the dedication, Peter! Good to see how the wK constructs his own graveyard with Sentinel pawns.

    I might mention that my award has been finished for some time, so this is not a case of bribery – any distinction Peter may receive is solely the result of the quality of the problems!

  2. shankar ram says:

    Sad news. The inventor of Sentinels, C.K.Ananthanarayanan, passed away today:

    • Seetharamanseetharaman says:

      His pioneering effort had its impact with composers producing variants like Pa;ra-sentinal, Sentinal-Pion-Advers. Very sad that I could not meet him despite my recent frequent visits to Bangalore (where he had been resident). We had completely lost touch with him and he had moved away from chess problems after this very interesting invention !

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