Julia's Fairies

No.338 (GG)

Gani Ganapathi (India)


Original Problems, Julia’s Fairies – 2013 (II): May – August

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No.338 by Gani Ganapathi –  Non-standard play of different types of Pawns! (JV)


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.

Chameleon: On completing a move, a Chameleon (from classical standard type) changes into another piece, in the sequence Q-S-B-R-Q…  Promotion may be to a chameleon at any stage in the cycle.

Berolina-Pawn: 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.

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

No.338 Gani Ganapathi
h=3               2 solutions              (4+3)
Royal pawns: g7, e4
Berolina-Pawns: h6, d3, f3, g7
Chameleon Chess
Solutions: (click to show/hide)

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June 23, 2013 09:00

Very imaginative solutions ! – Pity about h6 though.

Georgy Evseev
Georgy Evseev
June 23, 2013 12:15

Unfortunately, the only function of berolinas is to avoid suspicious checks to black royal piece in diagram position. If we do not require it then berolinas are not needed at all, for example:

White : rPd7 b6d6g5c3e3
Black : rPd4

1.dxc3 d8=rR 2.c2 rRg8(Q) 3.c1=rB rQc4(S)=
1.dxe3 d8=rQ 2.e2 rQf6(S) 3.e1=rS rSe4(B)=

Juraj Lörinc
June 23, 2013 13:34
Reply to  Georgy Evseev

Actually, we had even more economical position with pawns only (albeit twinned, but finely):
White: rPf7 Pd3f3f6
Black: rPe4
b) -Pf6

a) 1.e×f3 f8=rR 2.f2 rRb8(Q) 3.f1=rB rQf4(S)=
b) 1.e×d3 f8=rQ 2.d2 rQf5(S) 3.d1=rS rSd4(B)=

But the resistance of having check – illegal one – at the board was too strong. What is better in general opinion? (Do not forget the possibility “to publish nothing”.)

Nikola Predrag
Nikola Predrag
June 23, 2013 18:09

Illegal double check on the diagram looks unacceptable. Perhaps some incredible task-achievement could be commented as interesting but still illegal and thus not convincingly realized.
So far, it seems that Berolinas are necessary or Georgy’s suggestion should be adjusted: without wPc3 and with the twin brPd4>c4.

A possibility to publish nothing, unless all tools are well used and justified, it’s a good advice.
The content here is nice but rather simple. Chamelon chess is irrelevant for the black piece(s) and Berolinas are only a legalizing tool.
Imagination should find a way to make a good balance between the tools and the thematic content, that’s what makes the challenge for the author.

(Popeye 4.63 seems to have troubles with ChameleonChess, but the older versions treat it well)

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