Julia's Fairies

No.940 (EB)

Erich Bartel (Germany)


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

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No.940 by Erich BartelDisparate-stalemate in a serial problem. (JV)


Alphabetic Chess: The squares are considered in the order a1, a2…a8, b1…b8, c1 and so on to h8. At each turn, only the unit standing on the square which comes earliest in this order may move. However check and mate are normal.

Disparate PY: If one side makes a move with a piece of type “x” (black, white, neutral, half-neutral, etc., King included), the other side cannot answer immediately by moving a piece of the same type “x”. (For example: white Qc1, black Ka8,Qa7 – mate in 1 move. After 1.Qc8#, Black is mated because 1…Qb8? is illegal. The mate is possible also with the neutral nQc1 – after 1.nQc8#. Black cannot move the same neutral Queen.) Every Pawn’s promotion is a Pawn’s move, therefore after such promotion (into any possible piece) the other side cannot answer immediately with its Pawn. We can say that after the move of the figure of type “x” any enemy figure of type “x” falls under Half-moving paralysis. This paralysis disappears immediately on the next half-move, if the opponent plays with another piece of type “y”. (“Disparate PY” is implemented as “Disparate” till the latest version of Popeye, PY 4.73. In WinChloe this version of Disparate is available starting version 3.32.)

Anti-Circe: Anti-Circe Calvet (the default type): After a capture the capturing piece (Ks included) must immediately be removed to its game array square (necessarily vacant, else the capture is illegal). Captures on the rebirth square are allowed. Game array squares are determined as in Circe.

Circe: Captured units (not Ks) reappear on their game-array squares, of the same colour in the case of pieces, on the file of capture in the case of pawns, and on the promotion square of the file of capture in the case of fairy pieces. If the rebirth square is occupied the capture is normal.

No.940 Erich Bartel

original – 24.10.2015

Solution: (click to show/hide)

white Bb1 Pb2b3b4 Sa6 Kg8 Sh8 black Ka1 Pa2 Ba3 Pa4a5b7c7d7e7g7

ser-h=13                                   (7+10)
Alphabetic Chess
Disparate PY

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Kjell Widlert
Kjell Widlert
October 25, 2015 11:56

The reason for wKg8 is not to guard f7 (after Ke8-f7, the wK cannot capture because of Disparate) but only to stop 6.a1=Q 8.Qc4. Sh8 guards f7, and the wK could equally well stand on e2.

Bartel Erich
October 25, 2015 12:56

Dear Kjell,
yes, you’re right.
But because of this I did wK to g8 as to provoke the question: why wSh8 is needed.

Kjell Widlert
Kjell Widlert
October 26, 2015 01:32
Reply to  Bartel Erich

And that devious plan worked perfectly, because that is exactly the question I put to myself!

Luce Sebastien
Luce Sebastien
October 27, 2015 00:39

Same comment as for n°936.
It is C+ in Disparate ! Winchloe
(I don’t know if Disparate is now available on Popeye)
So as I register all the problems of Julia’s Fairies for Winchloe database, I propose to the authors to put Disparate instead of Disparate Py if the first condition gives C+. I repeat that Disparate Py is only a version created after
and only usefull in some very special cases.
Julia, could you be clear with the authors about that ?

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