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MatPlus.Net Forum Competitions 23rd Sabra Composing Tourney
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(1) Posted by Paz Einat [Thursday, Sep 10, 2020 18:06]

23rd Sabra Composing Tourney

This is written on behalf of Menachem Witztum

23rd Sabra Composing Tourney

An orthodox H#2 is required:
A black or white piece blocks a white line. In one phase the blocking piece comes out
of the line and in the other phase it is removed from the line

Judge:Menachem Witztum

Prize: 1 bottle of SABRA – the liqueur of Israel for your enjoyment.

Entries should be submitted to Paz Einat by email:
Until 7/10/2020 at 19:00.

Open to all composers but not more of 2 problems and only participants of the
WCCC 2021 congress can receive prize.

See the announcement with examples here:
(Read Only)pid=19642
(2) Posted by Manikumar S [Wednesday, Sep 16, 2020 18:59]

The tourney requirement says that "In one phase the blocking piece comes out.of the line and in the other phase it is removed from the line" - Can the blocking piece be removed by the line piece itself, though maintaining the same firing line?
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(3) Posted by Paz Einat [Wednesday, Sep 16, 2020 21:21]

If the capture by the line piece is what "opens" the line, this is not thematic. However, if another piece takes advantage of the line this should be OK
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(4) Posted by Siegfried Hornecker [Thursday, Sep 17, 2020 10:22]

For someone not making helpmates often, allow me the question:
A "phase" has to be in the same position, or can it be in twinnings?
Do phases have to be solutions, or can it be a set play also?

I just sent you a schema, but most likely that one is completely unusable if it is without twinning. :-)

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(5) Posted by Andrew Buchanan [Thursday, Sep 17, 2020 17:08]

The encyclopedia says:
Play after the key, after tries and set play each
constitutes a phase of play. A problem with set
play is said to have two phases (the set play being
one phase, the post-key play being another); a
problem with three tries would be a four phase
problem (each try being one phase, with the
post-key play the fourth). Play in different phases
will sometimes relate to each other. (Definition
from FIDE Album.)

I guess in helpmates, there can be multiple keys. I would have thought that twins can constitute separate phases, but maybe of a lesser quality because the separate phases are artificial rather than naturally occurring. But what do I know?
(Read Only)pid=19662
(6) Posted by Paz Einat [Friday, Sep 18, 2020 17:39]

In helpmates a phase means either 1) solution 2) twin 3) set play
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(7) Posted by Paz Einat [Monday, Oct 19, 2020 08:38]

The award is now ready.
Access here

or alternatively, here

Please send any anticipation claims to me:
(Read Only)pid=19804

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MatPlus.Net Forum Competitions 23rd Sabra Composing Tourney