Horizontal Symmetry Circe: upon capture, a unit (not king) is reborn on the square which is the image of the capture square in a horizontal mirror placed across the centre of the board (e.g. a3 → a6, cf. Symmetry Circe a3 → h6); unless the rebirth square is occupied, when the captured unit disappears as normal.
No.1326Stephen Emmerson U.K. original – 18.09.2018
I think that the condition should be called “Horizontal Symmetry Circe” since it is a variant of “Symmetry Circe”. It is not the horizontal counterpart of “Vertical Mirror Circe” which takes as its starting point the normal rebirth square, and not the capture square as in this problem.
In any case, the condition is equivalent to the combination “Circe Symmetry VerticalMirror” and can be tested as such in Popeye and Jacobi — no tweaking necessary. (For those curious, “Symmetry” overrides the normal rebirth square, and that square is further transformed by “VerticalMirror”.)
I wasn’t aware of a condition called “Vertical Mirror Circe” is this the same as is produced by specifying “Circe VerticalMirror” in Popeye? Are there problems using it?
Also I hadn’t realised one could modify SymmetryCirce with VerticalMirror in Popeye – an unfortunate way to specify a horizontal mirror; and I can’t figure out a way to specify what would be a vertical mirror equivalent (e.g. x on a3, rebirth on h3).
I thought of Horizontal Symmetry Circe but my thought was that, given a variant called “Vertical Symmetry Circe” too, it would not be obvious which was which from the name alone. Though “Symmetry Circe” says nothing at all about which symmetry, so I guess it’s no worse.
To specify Vertical Symmetry Circe, the best attempt is “Circe Symmetry Diametral VerticalMirror”. It works in Jacobi, but fails in Popeye (“nonsense combination”).
If the meaning of horizontal symmetry is not obvious, then people can use Google. It’s a math concept.
By the way, WinChloe calls your condition “Circé symétrique horizontal”, with 3 problems in its database.
I think that the condition should be called “Horizontal Symmetry Circe” since it is a variant of “Symmetry Circe”. It is not the horizontal counterpart of “Vertical Mirror Circe” which takes as its starting point the normal rebirth square, and not the capture square as in this problem.
In any case, the condition is equivalent to the combination “Circe Symmetry VerticalMirror” and can be tested as such in Popeye and Jacobi — no tweaking necessary. (For those curious, “Symmetry” overrides the normal rebirth square, and that square is further transformed by “VerticalMirror”.)
I wasn’t aware of a condition called “Vertical Mirror Circe” is this the same as is produced by specifying “Circe VerticalMirror” in Popeye? Are there problems using it?
Also I hadn’t realised one could modify SymmetryCirce with VerticalMirror in Popeye – an unfortunate way to specify a horizontal mirror; and I can’t figure out a way to specify what would be a vertical mirror equivalent (e.g. x on a3, rebirth on h3).
I thought of Horizontal Symmetry Circe but my thought was that, given a variant called “Vertical Symmetry Circe” too, it would not be obvious which was which from the name alone. Though “Symmetry Circe” says nothing at all about which symmetry, so I guess it’s no worse.
For an example problem using “Vertical Mirror Circe”, see https://juliasfairies.com/problems/jf-2013-i/no-273/ .
To specify Vertical Symmetry Circe, the best attempt is “Circe Symmetry Diametral VerticalMirror”. It works in Jacobi, but fails in Popeye (“nonsense combination”).
If the meaning of horizontal symmetry is not obvious, then people can use Google. It’s a math concept.
By the way, WinChloe calls your condition “Circé symétrique horizontal”, with 3 problems in its database.
By author’s request (after comments) the condition is changed to “Horizontal Symmetry Circe”
Btw the diagram position is false, as it shows the initial game array.
I’m sorry, it was my technical problem about animation PG problem with twins. (20.09) Hope, it is solved now.
Would Pe4->e5 with 2 solutions work?
Although the non-repeated moves is lost.