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Comments by sibahi

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Hishigata Shogi. Variation of Maka-Dai-Dai Shogi (ultra large Shogi). (19x19, Cells: 361) [All Comments] [Add Comment or Rating]
Abdul-Rahman Sibahi wrote on Thu, Jun 28, 2007 01:30 PM UTC:
It would be nice if this page has some description of the pieces. And an English version of the Diagrams.

Crazy 38's. On strange board with 38 squares. (Cells: 38) (Recognized!)[All Comments] [Add Comment or Rating]
Abdul-Rahman Sibahi wrote on Thu, Jun 28, 2007 03:51 PM UTC:
Done ..

I posted the preset. Waiting to be published.

Hullabaloo. Fusion, fission game with drops, giant conglomerations and two types of activation.[All Comments] [Add Comment or Rating]
Abdul-Rahman Sibahi wrote on Fri, Jun 29, 2007 06:54 PM UTC:
I don't quite understand the rules. If a sample game was provided it would be nice.

Querquisite Chess. (Updated!) Features the whimsical, irregular Querquisites,. (8x10, Cells: 72) [All Comments] [Add Comment or Rating]
💡📝Abdul-Rahman Sibahi wrote on Fri, Jun 29, 2007 08:57 PM UTC:
I tried to calculate rough estimates for the values of the pieces, using the Safe Check principle. This is, simply put, if you place a piece and a King randomly on the board, the probability of that piece giving a 'safe check' to the King. For pieces like the Knight this like the movement estimation.

[[ The following calculations assume that the Querquisite on the e-file moves like a King, but the one on the D-file moves like a Queen. Any changes in the definitions of files (as in Fischer Random) might change the value of the Querquisite. ]]

I came out with these percentages :

  R= 15.7 %
  B= 8.7  %
  N= 7.9  %
  U= 10.8 %

And the Queen is simply the sum of its components. So are the Chancellor (Rook+Knight) and Archbishop (Bishop+Knight.) The Querquisite's compounds are a waste of time to calculate, since they're not practical.

Giving the Knight the absolute value of 3 Pawns, these are the values:

  N= 3   Pawns
  B= 3.3 Pawns
  R= 6   Pawns (However, as in normal Chess, I think they should be
                adjusted to 5 Pawns.)
  Q= 9.4 Pawns
  U= 4   Pawns

Out of curiosity, I computed the two Capablanca pieces on this board:

  A= 6.3 Pawns
  C= 9.4 Pawns

This seems about right. It's worth mentioning that the values would certainly change on a 10x8 board with these two Half-Ranks added.

The Querquisite, generally, is most mobile on the Rooks and Queen's files. Place it there.

Shatranj Kamil (64). Modern Shatranj based variant on 8 by 8 board with new pieces. (8x8, Cells: 64) [All Comments] [Add Comment or Rating]
Abdul-Rahman Sibahi wrote on Sat, Jun 30, 2007 12:28 PM UTC:
Proposed variant : Shatranj Kamil (72) :

I did some piece value experiments on the Templar Chess board, which adds half a rank behind both home ranks. And this game looked like it would suit such a board.

Proposed setup:

9      - e k -
8  r n s f e s n r
7  p p p p p p p p
6  - - - - - - - -
5  - - - - - - - -
4  - - - - - - - -
3  - - - - - - - -
2  P P P P P P P P
1  R N S F E S N R
0      - E K -

   a b c d e f g h

No castling, and all pieces move as they do in Shatranj Kamil (64). Pawns promote to Silver Generals at the eighth rank, regardless of which file they're on. (They start on the second.) All rules are as in the original game: Shatranj Kamil (64).

It's just an idea.

I would think that, instead of the Silver Generals (S) why not use S2 ? The S2 moves like a 2-step Bishop or a 2-step Lance.

Blunderbuss Chess. Pieces are poorer shots than in Rifle Chess. (8x8, Cells: 64) [All Comments] [Add Comment or Rating]
Abdul-Rahman Sibahi wrote on Tue, Jul 3, 2007 02:51 PM UTC:
This sounds like a very interesting mutator. My guess would be that it's very much playable with normal chess.

(I would like to point out that there are a couple of typos while listing the numbers. 2 and 12 both deflect to the right.)

An interesting variant would be for the bullet to be deflected 180° (return to the shooter) when the dice add up to 7 (or any other number.) This would make someone think twice before shooting a bullet.

(Might be wrong), the chances for the dice to show a certain number are:

2 : 1/36
3 : 2/36 = 1/18
4 : 3/36 = 1/12
5 : 4/36 = 1/9
6 : 5/36 
7 : 6/36 = 1/6
8 : 5/36 
9 : 4/36 = 1/9
10: 3/36 = 1/12
11: 2/36 = 1/18
12: 1/36

Grand Chess. Christian Freeling's popular large chess variant on 10 by 10 board. Rules and links. (10x10, Cells: 100) (Recognized!)[All Comments] [Add Comment or Rating]
Abdul-Rahman Sibahi wrote on Wed, Jul 4, 2007 04:40 PM UTC:
I found a faster Fool's mate than the one published in Tony Quintanilla's comment.


Shafran's Hexagonal Chess. I G Shafran's Game on the Game Courier.[All Comments] [Add Comment or Rating]
📝Abdul-Rahman Sibahi wrote on Wed, Jul 4, 2007 09:57 PM UTC:
Thanks, it is corrected now.

[Subject Thread] [Add Response]
Abdul-Rahman Sibahi wrote on Thu, Jul 5, 2007 03:34 PM UTC:
I didn't know where to ask or publish this, so I thought I would ask it
here.

Emergo is a Checkers variant created by Christian Freeling & Ed van Zon.

The rules are here :
http://www.mindsports.net/CompleteGames/Elimination/Emergo.html

I was wondering, if we get rid of the entering phase, and start from a
certain setup, what's the worst that could happen ?

The opening setup i have in mind is this : 

/  1 2 3 4 5 6 7 8 9

1  -   B   B   B   -
2    B   B   B   B
3  B   B   B   B   B
4    -   -   -   -
5  -   -   -   -   -
6    -   -   -   -
7  W   W   W   W   W
8    W   W   W   W
9  -   W   W   W   -

Of course, the (-) are vacant squares the pieces may move to. The other
squares are just ignored.

This setup is perfectly possible to play even under the original rules if the players agree to it. Certainly the Placement Phase (which is omitted by the starting setup entirely) provides more tactical possibilities, but the rules of it are quite complicated (you may not expose yourself to attack unless you are already attacked!!)

So, what does anyone think ?


Note :

http://www.mindsports.net/CompleteGames/Checkmate/

Many variants here, some are worthy of being on the Game Courier some
time.

65 Square Chess. FIDE chess but pretend there's another square smack dab in the middle.[All Comments] [Add Comment or Rating]
Abdul-Rahman Sibahi wrote on Fri, Jul 6, 2007 10:26 PM UTC:
Great minds think alike.

http://www.chessvariants.com/41.dir/familymatters/index.html

Circular Chess. Chess on a round board. (16x4, Cells: 64) (Recognized!)[All Comments] [Add Comment or Rating]
Abdul-Rahman Sibahi wrote on Sun, Jul 8, 2007 01:00 PM UTC:
This is not even the same game.

[Subject Thread] [Add Response]
Abdul-Rahman Sibahi wrote on Tue, Jul 10, 2007 05:32 AM UTC:
In a slightly irrelevant note, I notice that you have a few extensions of
the Falcon named.

Falcon    3-square multipath
Scorpion  4-square multipath
Dragon    5-square multipath
Phoenix   6-square multipath

I wonder what others you have named in this chain. The one I am wondering
about is the 2-square multipath (which is, technically, a combination of
the Mao and his opposite, the Moa.) Since I think you're relying on Egyptian Mythology for naming these pieces it would be fun if this piece is called the Cat. The name isn't much appropriate though.

Abdul-Rahman Sibahi wrote on Tue, Jul 10, 2007 11:07 PM UTC:
http://homepage.ntlworld.com/gpjnow/VC-GM.htm#M

It's called the 'Moo' among problemists, funny name. Duniho calls it the Squire in Holywar. 

For me, this piece would be my choice for the name 'Donkey'. M Winther beat me to the name though. However, I think the name Donkey fits this theme a little better than Winther's.

So .. hmm

Donkey (Dy): 2-square multipath
Falcon  (F): 3-square multipath
Scorpion(S): 4-square multipath
Dragon (Dn): 5-square multipath
Phoenix(Px): 6-square multipath
Roc    (Rc): 7-square multipath

Rook    (R): orthogonal rider.
Bishop  (B): diagonal rider, + noncapturing wazir (necessary for 17
             files.)

Pawn    (P): normal pawn. may move one step or all the way to the 8th
             rank, promotion upon reaching the opp's pawn rank (as in
             makruk) to any piece (queens and knights not included.)
King    (K): normal king. no castling.
Queen   (Q): royal queen. see below.

I almost now see a tantalizing variant on a 16x16 (or a 17x17), I might call Full Board. The first four ranks for white are :

4    P  P  P  P  P  P  P  P  (P)  P  P  P  P  P  P  P  P
3    -  -  -  -  -  -  -  -  (-)  -  -  -  -  -  -  -  -
2    R  Rc Px Dn S  F  Dy B  (K)  B  Dy F  S  Dn Px Rc R
1    -  -  -  -  -  -  -  -  (-)  -  -  -  -  -  -  -  -

The file in brackets doesn't exist in the 16x16 board. Needless to say, black's setup mirrors white's.

On the 16x16, it's played by Extinction chess rules. On the 17x17, the goal is to checkmate the king. Draws are by the usual methods, with the 50 move rule replaced by a 100 move rule. Stalemate is 0.75 points.

Other variant, on a 15x15 board :

3   P  P  P  P  P  P  P  P  P  P  P  P  P
2   -  -  -  -  -  -  -  -  -  -  -  -  -
1   Rc Px Dn S  F  Dy Q  Dy F  S  Dn Px Rc

The goal is to checkmate the Queen. The rules for the Queen are identical to those in Caissa Brittania. Stalemate is 0.75 points.

Three variants :

'King Full Board (17 sq.)', 'Extinction Full Board (16 sq.)' and 'Queen Full Board (15 sq.)'. My preference is the last.

[Subject Thread] [Add Response]
Abdul-Rahman Sibahi wrote on Tue, Jul 17, 2007 12:22 PM UTC:
I think Betza has his wording correct. More force DOES make the game more
strategical, especially if one mistake can lead immediately to a mate in
1.

An example is Suicide Chess (though it doesn't quite fit here.) Suicide
for beginners is a very tactical game. However, among the masters (who
became so by avoiding tactical mistakes,) it's a game of strategy.

Betza in his page of Tripunch chess talked about Small Weaknesses, and how
the Nightrider is useful in this matter. As I understand strategy, small
weaknesses is all that matters.

Leapers Creeepers. Featuring compound long leapers of giraffes, zebras and camels.[All Comments] [Add Comment or Rating]
Abdul-Rahman Sibahi wrote on Tue, Jul 17, 2007 12:31 PM UTC:
How do the pieces move ? (especially the two knight-looking pieces.)

FIDE Chess Kamil. FIDE Chess but with extra pawns, extra bishops and a store of superpowerful pieces waiting to replace the regular ones.[All Comments] [Add Comment or Rating]
Abdul-Rahman Sibahi wrote on Fri, Jul 20, 2007 05:50 PM UTC:
the Patient Pawns in Queen of the Night Chess may also move sideways. Is this the case in IX ?

I might add that the dropping mechanism in this set of variants has a certain flaw. It's possible, in normal chess, to attack a piece on the opp's first rank. In this game, assuming a similar capture happens, and that there's no way to prevent the capturing piece from 'escaping' in a sense, it can vacate the square, have the spare piece droppes, then capture a second piece. It's highly unlikely that players will allow this kinda capture, but it's still an annoyance.

There's also no retreat mechanism, maneuvering, in a chess sense, can prove difficult.

Also, doesn't that make the board particulary 'crowded' ?

As a possible solution, consider this : the piece is dropped on that square as soon as the piece originally occupying it is captured (in a circe-style.) If this square is occupied, the piece is dropped anyway, destroying any piece (enemy or friendly) that is under it. A legal possibilty is having the King on a knight's square, the knight is still on the board, it's illegal to place the knight under attack, since capturing it will destroy the king.

The pieces behind the king are replaced by a Queen capture. Pieces behind pawns are dropped as soon as the pawn leaves its file, or promotes, or is captured.

Abdul-Rahman Sibahi wrote on Fri, Jul 20, 2007 09:06 PM UTC:
Assume this very simple position : 

White : K anywhere, B b7
Black : K anywhere, R a8 , M behind R

After 1.Bxa8 any 2.Bb7(M emerges) .. ok, this is not quite what i had in mind when i typed that comment (I was under the impression that the 'emerging' is a separate move,) but the Marshal is under attack. Unless it can get outa there quickly (which is difficult in the usually crowded positions this game gives,) it's lost.

Swedish Hopper Chess. (Updated!) Features the Swedish Hopper.[All Comments] [Add Comment or Rating]
💡📝Abdul-Rahman Sibahi wrote on Sat, Jul 21, 2007 07:42 AM UTC:
Thanks. I knew the piece existed but was too lazy to look for it.

Multimove Chess. Players spend points to make multiple moves. (8x8, Cells: 64) [All Comments] [Add Comment or Rating]
Abdul-Rahman Sibahi wrote on Fri, Jul 27, 2007 08:51 PM UTC:
As I understand the rules, a pawn's double move costs 3 points ?

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Abdul-Rahman Sibahi wrote on Tue, Jul 31, 2007 04:34 AM UTC:
I don't believe the BrainKing mass of games is reliable. Too many
beginners. If, somehow, you could get the percentages where both players
in a game are among the top ten, you would get a better estimate.

As I said in an earlier thread, I don't believe the first move advantage
is a flaw. I think it is the most natural thing.

Incidentally, the setup I prefer for this variant is : R N B R* B* K N* B
N R

King's Color. Pieces move depending if they are on the same color squares as the king in hexagonal chess variant. (Cells: 91) [All Comments] [Add Comment or Rating]
Abdul-Rahman Sibahi wrote on Tue, Jul 31, 2007 04:37 AM UTC:
This must be one of the craziest games here.

2007-2008 Chess Variants Design Contest. Chess variant inventors gather round! We're doing it again! Exact nature of contest to be determined with YOUR help!![All Comments] [Add Comment or Rating]
Abdul-Rahman Sibahi wrote on Thu, Aug 2, 2007 09:36 AM UTC:
Ha .. Finally a contest ..

An example you might like for a game that uses one type of piece is Chad, by Christian Freeling.

This brings up the suggestion of having a confined King as a theme. The most obvious example is Xiangqi. Other examples I can think of are Seenschach, Sphinx Chess, and Congo (which is animal themed.)

Like Graeme Neatham suggested, a Multi-board contest would be nice. (Examples being Alice Chess, Bughouse, Tandem-84.)

However, I would also suggest that using triangles for cells would make a nice change. Not necessarily equilateral triangles or a flat board.

Also, using pentagons is also a nice change. Using the Cairo tiling for example.

You can specify a certain board for the game. Like the Crazy38's board or the board in The Central Squares, or an Icosahedron (http://en.wikipedia.org/wiki/Icosahedron).

Congo, by Demian Freeling, is Animal themed. This is also a pretty theme for a contest.

Other suggestion: games that use a Royal piece that does NOT move like a King. (Either a specific piece, like a Queen, or the player is given the choice.) Examples are many for Queens and Knights. Horus by Peter Aronson uses royal Falcons. Some games use a stationary King. (There's a game in the Number 10 contest, which used a piece that can only move when in check, called the President.)

Speaking of Christian Freeling's games, a theme that immediately comes to mind is games without pawns. Another theme is that Pieces can't capture each other (unless in specific situations, like in Chad.) In Caissa, instead of capture, you swap places with the other piece. Usually the only piece that can capture is the Royal piece.

--

As for my vote, I vote for boards that use a fixed board, specifically the Icosahedron (admittedly, I have an idea for a game.)

I prefer the voting method to judge the contest.

Abdul-Rahman Sibahi wrote on Thu, Aug 2, 2007 06:14 PM UTC:
http://www.chessvariants.org/contests/10/vesquj/vesquj3.html

This is the game I was talking about, to quote:

'The President, as a modern head of state, does not lead the army to battle. In fact, the President cannot move unless attacked! If in check, the President may move by trading places with any piece on the same side except a Sergeant. (The military whisks her away to a refuge.)'

--

My vote, from the current list, ordered by preference :

A. Tony Quintanilla's suggestion (which is, in short, designing a mutator.)

B. Winning Conditions other than mate. (Losers, where you have to get mated.)

C. A game with Triangles as cells.

D. Specific type of Board : The Central Squares.

E. Multiple Boards. (1+)

Game Courier. PHP script for playing Chess variants online.[All Comments] [Add Comment or Rating]
Abdul-Rahman Sibahi wrote on Thu, Aug 9, 2007 07:26 PM UTC:
To Mr. Duniho,

An option to have 'Diamonds' in the menu 'Shape', which are 45 degrees squares, would be nice. It's like the difference between vertical and horizontal hexagons. (I realize it can be worked around using the bkg image, but it's a nice option to have.)

Regards,

Omega Chess. Commercial chess variant on board with 104 squares.[All Comments] [Add Comment or Rating]
Abdul-Rahman Sibahi wrote on Fri, Aug 10, 2007 11:16 AM UTC:
Thompson, George Duke has played a few games of Omega Chess, one of them was against me.

Personally, I think Omega Chess is a good game in its own right. However, the endgame does play out like a prolonged and boring Chess ending. The existence of all those leapers (and the huge space between the two armies) makes pawn pushes somehow unnecessary, and pawns are the soul of chess.

I wonder though, what George Duke considers to be the 'best' decimal variant, (my bet is that he will say Rococo, but I would call it an Ultima variant, not a Chess variant.)

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