Comments by JorgKnappen

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Revisiting the Crooked Bishop. Revisiting the Crooked Bishop.[All Comments] [Add Comment or Rating]

JorgKnappen wrote on Wed, Dec 5, 2001 12:00 AM UTC:Excellent ★★★★★

Have I overlooked something in the first version of the problem? 1. Ke3 d5 2. zBe2 gives mate in 2 moves. The second version looks fine (but does not exhibit the ability of the zB to pin two pieces at the same time). --J'org Knappen

Rule Zero. A base or starting rule set for most Chess variants.[All Comments] [Add Comment or Rating]

JorgKnappen wrote on Thu, Jul 4, 2002 08:23 AM UTC:Good ★★★★

I want to coment on the rule 'When stalemate wins, repetition of
positions
is forbidden'. This rule is known to Go players as Superko rule. Alltho
it is implemented in some official Go rule sets (e.g. for New Sealand) it
is considered problematic. The reason is that humans are not good in
tracing
repeated positions except in the most simple cases.

In my opinion the FIDE rules are perfectly right: One can claim draw on
repeated position, but there is no automatic consequence.

A superko rule theoretically rules out a draw (or in Go terms: a no
result),
but in chess there are just too many positions available to eliminate
draws
effectively in play between humans.

Cardinal. Moves as bishop or as knight.[All Comments] [Add Comment or Rating]

JorgKnappen wrote on Tue, Aug 19, 2003 09:03 PM UTC:Excellent ★★★★★

Nice summary.

I just want to add name and date for Janusschach:

It was invented by Werner Schöndorf in 1978.

Another game using this piece is my Quintessential Chess, designed 2002
for the 84 squares contest. I decided to use the name Janus for this
piece.

Russian Chess. Pieces are not removed when captured, but stacked. (8x8, Cells: 64) [All Comments] [Add Comment or Rating]

JorgKnappen wrote on Fri, Aug 22, 2003 12:23 PM UTC:

The game resembles much to Pillar Chess (described on this site)
and >>Das trojanische Spiel<< (commercial, german game, having a link
in the german section of this site).

Switching Realms Chess. All noncapturing moves must change the board subset a piece occupies. (8x8, Cells: 64) [All Comments] [Add Comment or Rating]

JorgKnappen wrote on Fri, Sep 12, 2003 03:55 PM UTC:

I have considered the erl queen (as I prefer to call the slip queen),
but discarded it because it is off-theme: it can triangulate, what
a switching piece cannot.

I drafted the erl queen for the sweeping switchers, because there I
needed
a piece with the can-mate property.

JorgKnappen wrote on Fri, Sep 12, 2003 03:59 PM UTC:

However, there is a nice Switcheing Realms Queen: If one takes the
horizontal move from the erl queen a different kind of switching piece
emerges: It must switch between odd and even ranks. Thus, mfb(slipQ)cQ
is a nice Switching Realms Queen.

In the same way, mDDffbbNcRN is a nice Separate Realms Chancellor, bound
to odd or even ranks while moving.

Betza Notation. A primer on the leading shorthand for describing variant piece moves.[All Comments] [Add Comment or Rating]

JorgKnappen wrote on Thu, Sep 18, 2003 09:54 AM UTC:Excellent ★★★★★

This is an excellent pedagocical presentation of Ralph Betza's
funny notation as it is. Thanks to Glenn for this.

[Subject Thread] [Add Response]

JorgKnappen wrote on Tue, Sep 23, 2003 04:49 PM UTC:

I am just designing a doucecimal chess variant (on a 12 times 12 board)
and wonder how many moves I should reserve for the modified 50 moves
rule. 

I think, there should be sufficient moves such that knight and bishop and
king still can mate a bare king. The number of moves theoretically needed
is surely known, has someone the numbers ready for different board sizes?

JorgKnappen wrote on Mon, Sep 29, 2003 08:38 AM UTC:

My question is rather specific, in the duodecimal variant I am just
designing there are standard knights and bishops, and I want the endgame
of
king & knight & bishop vs lone king to be a win.

I assume, that someone else has computed the numbers of moves necessary
with
a computer programme, and I hope someone here knows them (or knows where
they are published).

Constitutional Characters. A systematic set of names for Major and Minor pieces.[All Comments] [Add Comment or Rating]

JorgKnappen wrote on Mon, Jan 5, 2004 07:59 PM UTC:

According to Cazaux's book on chess variants (in french) it
is a species of cat, latin name Panthera unica, french once.
Don't know german or english names.

--JKn

The Seeping Switchers. An army for Chess with Different Armies based on pieces that change color when they move.[All Comments] [Add Comment or Rating]

JorgKnappen wrote on Mon, Mar 29, 2004 05:53 PM UTC:

I don't know any better name for the slip bishop, nor do I know any game
or problem that uses this particular piece.

I have different sources to Grande Acedrex, suggesting that the Unicorn
of Grande Acedrex is really a bent rider and not the piece described in
the webpage on chessvariants.com 

--JKn

So what's YOUR favorite?. Yeah, we've got a list of recognized variants. But what games are YOUR personal favorites?[All Comments] [Add Comment or Rating]

JorgKnappen wrote on Wed, Oct 29, 2008 08:06 AM UTC:Excellent ★★★★★

The excellent is for asking this really good question. I want to list these
favorites:

1. Chu Shogi A big shogi variant introducing lots of interesting pieces.
And it has a players' community as well (even organised and with
tournaments). 

2. Tai Shogi A very big shogi variant with pieces no westerner has even
dreamt about like the hook movers.

3. Sons of Mithra A chess variant with very much flavour in it. It has
creative pieces, creative methods of capturing, and the traces of sound
playtesting.

4. Seperate Realms Chess A good example of how a rather restrictive idea
leads to an excellent game.

5. Perfect 12 I love Cazaux' style in chessvariant design and this one is
a good example. Don't miss the other games by him!

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