Author: Jorge Pichard
Date: 13:15:43 08/04/03
Go up one level in this thread
On August 04, 2003 at 15:27:51, Terry McCracken wrote:
>On August 04, 2003 at 15:11:34, Jorge Pichard wrote:
>
>>On August 04, 2003 at 15:07:39, Jorge Pichard wrote:
>>
>>>On August 04, 2003 at 15:01:29, Terry McCracken wrote:
>>>
>>>>http://www.chessbase.com/shop/newproducts.asp
>>>>
>>>>Terry
>>>
>>>That is great, but I can not wait to see the first top FRC_program from
>>>Chessbase to buy it.
>>
>>PS: Specially FRC_Fritz9 or FRC_Shredder8
>>
>>Pichard
>
>Sorry I know I should know, but, what does FRC stand for?
>
>Terry
Rules of Chess960 (Fischer Random Chess )
by Eric van Reem
A little known and long-discarded offshoot of Classical Chess is the realm of
so-called "Randomized Chess" in its various forms. Fischer Random Chess (here in
after referred to as "F.R. Chess") stands for Bobby Fischer's new and improved
version of "Randomized Chess". F.R. Chess uses algebraic notation exclusively.
At the start of every game of F.R. Chess, both players Pawns are set up exactly
as they are at the start of every game of Classical Chess.
In F.R. Chess, just before the start of every game, both players pieces on their
respective back rows receive an identical random shuffle using the Fischer
Random Chess Computerized Shuffler, which is programmed to set up the pieces in
any combination, with the provisos that one Rook has to be to the left and one
Rook has to be to the right of the King, and one Bishop has to be on a
light-colored square and one Bishop has to be on a dark-colored square. White
and Black have identical positions. From behind their respective Pawns the
opponents pieces are facing each other directly, symmetrically. Thus for
example, if the shuffler places White's back row pieces in the following
position: Ra1, Bb1, Kc1, Nd1, Be1, Nf1, Rg1, Qh1, it will place Black's back row
Pieces in the following position, Ra8, Bb8, Kc8, Nd8, Be8, Nf8, Rg8, Qh8, etc..
In F.R. Chess there are 960 possible starting positions, the Classical Chess
starting position and 959 other starting positions.
The Castling
Of necessity, In F.R. Chess the castling rule is somewhat modified and broadened
to allow for the possibility of each player castling either on or into his or
her left side or on or into his or her right side of the board from all of these
960 starting positions.
Please note the following points:
In F.R. Chess, depending on the pre-castling position of the castling King and
Rook, the castling maneuver is performed by one of these four methods:
By on one turn making one move with the King, and making one move with the Rook
("double-move" castling).
By transposing the position of the King and the Rook ("transposition" castling).
By making only one move - with the King ("King-move-only" castling).
By making only one move - with the Rook ("Rook-move-only' castling).
Clarifications:
In F.R. Chess, whether you "double-move" castle, "transposition" castle,
"King-move-only" castle, or "Rook-move-only" castle, in all cases always both
the King and the Rook jointly are deemed to be castling, and to have castled.
In F.R. Chess, when "double-move" castling, if the King is standing on the
square the Rook will occupy naturally you must move the King first and then the
Rook; if the Rook is standing on the square the King will occupy naturally you
must move the Rook first and then the King; otherwise whether you move the King
first and then the Rook, or the Rook first and then the King is strictly your
choice.
In F.R. Chess, when "double-move" castling either the King jumps over the Rook
or else the Rook jumps over the King.
In F.R. Chess, when "King-move-only" castling the King always jumps over the
Rook.
In F.R. Chess, when "Rook-move-only" castling the Rook always jumps over the
King.
In F.R. Chess, "a"-side castling (0-0-0), and "h"-side castling (0-0) are the
F.R. Chess equivalents of Queen-side or long castling (0-0-0), and King-side or
short castling (0-0) respectively, of Classical Chess.
In F.R. Chess, White's "a"-side castling (0-0-0) is performed with the hitherto
unmoved White King and the hitherto unmoved Rook standing to its left. After
White's "a"-side castling (0-0-0) the White King stands on c1 and the
aforementioned Rook stands on d1.
In F.R. Chess, Black's "a"-side castling (… 0-0-0) is performed with the
hitherto unmoved Black King and the hitherto unmoved Rook standing to its right.
After White's "a"-side castling (0-0-0) the Black King stands on c8 and the
aforementioned Rook stands on d8.
In F.R. Chess, White's "h"-side castling (0-0) is performed with the hitherto
unmoved White King and the hitherto unmoved Rook standing to its right. After
White's "h"-side castling (0-0) the White King stands on g1 and the
aforementioned Rook stands on f1.
In F.R. Chess, Black's "h"-side castling (… 0-0) is performed with the hitherto
unmoved Black King and the hitherto unmoved Rook standing to its left. After
Black's "h"-side castling (… 0-0) the Black King stands on g8 and the
aforementioned Rook stands on f8.
When castling in F.R. Chess, you are not allowed to make any capture(s).
When castling in F.R. Chess, no other piece(s), yours or your opponent's, are
allowed to stand between the castling King and Rook.
In F.R. Chess, when in check, you are not allowed to castle. Or, put another
way: In F.R. Chess you are not allowed to castle "out" of check.
In F.R. Chess you are not allowed to castle into check.
When castling In F.R. Chess, your King is not allowed to move through check, or
shall we say any "checked" square (same thing), nor is your King allowed to jump
over you own Rook if and when said Rook stands on a "checked" square. (A
"checked" square is a square that is attacked by one or more of your opponent's
pieces.)
After completing your first move of "double-move" castling In F.R. Chess, it is
quite possible and not at all illegal for your opponent to be in a position
where, were it your opponent's move, your opponent would be in stalemate, check,
or checkmate. Should after completing your first move of "double-move" castling
one of these three aforementioned situations exist you are to ignore it and make
your prescribed second move of "double-move" castling.
Exception: In F.R. Chess, when your first move of "double-move" castling, or at
least what could become your first move of "double-move" castling, also
constitutes a completely standard non-castling King or Rook move, the choice of
whether to proceed with your second move of "double-move" castling or to
consider your move as an already completed non-castling move is yours to make.
You signify your choice for the former by first making your second move of
"double-move" castling and then pushing the appropriate button on the chess
clock, you signify your choice for the latter simply by pushing the appropriate
button on the chess clock.
Suggestion: When playing a friendly game of F.R. Chess without benefit of a
chess clock, to avoid any possible confusion or disputes, it might sometimes be
a good idea to announce to your opponent just before you castle, "I'm going to
castle."
Once the White King has moved, White is not allowed to castle for the rest of
the game. Likewise, once the Black King has moved, Black is not allowed to
castle for the rest of the game.
Once the heretofore-unmoved Rook standing to the left of the unmoved White King
has moved, White is not allowed to "a"-side castle (0-0-0) for the rest of the
game.
Once the heretofore-unmoved Rook standing to the right of the unmoved Black King
has moved, Black is not allowed to "a"-side castle (… 0-0-0) for the rest of the
game.
Once the heretofore-unmoved Rook standing to the right of the unmoved White King
has moved, White is not allowed to "h"-side castle (0-0) for the rest of the
game.
Once the heretofore-unmoved Rook standing to the left of the unmoved Black King
has moved, Black is not allowed to "h"-side castle (… 0-0) for the rest of the
game.
Any appearances to the contrary notwithstanding, you are not considered to be
castled or to have castled unless you yourself have actually castled, i.e.
performed the castling maneuver. In other words: If you haven't castled, you
haven't castled.
Once White has castled, White is not allowed to castle again for the rest of the
game. Once Black has castled, Black is not allowed to castle again for the rest
of the game.
Hint: In F.R. Chess, when it is momentarily impossible to "a"-side castle
(0-0-0) because of the obstructing position of your other unmoved Rook, or vice
versa, when it is momentarily impossible to "h"-side castle (0-0) because of the
obstructing position of your other unmoved Rook, do not be confounded. These are
frequent occurrences in F.R. Chess. Play proceeds in accordance with the rules
in this rulebook.
Remark: In F.R. Chess, depending upon the starting position, and how the game
develops, it may often occur that in the positions produced immediately after
"a"-side castling (0-0-0), one, two, or all three of the squares for White a1,
b1, and e1 (for Black a8, b8, and e8), and after "h"-side castling (0-0), one or
both of the squares for White e1 and h1 (for Black e8 and h8) are not vacant, as
they automatically are, for example, in Classical Chess.
All the other rules are the same as in Classical Chess.
Castling tables
If you are ever in any doubt about the correct "before" and "after" castling
positions in F.R. Chess, please consult the following tables, showing all (84)
possibilities of castling, (42) for White, and (42) for Black:
All twenty-one White "Before" and the one "After" position of "a"-side castling
(0-0-0):
Before: Kg1; Rf1, e1, d1, c1, b1 or a1. After: Kc1; Rd1.
Before: Kf1; Re1, d1, c1, b1, or a1. After: Kc1; Rd1.
Before: Ke1; Rd1, c1, b1, or a1. After: Kc1; Rd1.
Before: Kd1; Rc1, b1 or a1. After: Kc1; Rd1.
Before: Kc1; Rb1 or a1 After: Kc1; Rd1.
Before: Kb1; Ra1 After: Kc1; Rd1.
All twenty-one White "Before" and the one "After" position of "h"-side castling
(0-0):
Before: Kb1; Rc1, d1, e1, f1, g1 or h1. After: Kg1; Rf1.
Before: Kc1; Rd1, e1, f1, g1 or h1 After: Kg1; Rf1.
Before: Kd1; Re1, f1, g1 or h1 After: Kg1; Rf1.
Before: Ke1; Rf1, g1 or h1 After: Kg1; Rf1.
Before: Kf1; Rg1 or h1 After: Kg1; Rf1.
Before: Kg1; Rh1 After: Kg1; Rf1.
All twenty-one Black "Before" and the one "After" position of "a"-side castling
(… 0-0-0):
Before: Kg8; Rf8, e8, d8, c8, b8 or a8 After: Kc8; Rd8.
Before: Kf8; Re8, d8, c8, b8 or a8 After: Kc8; Rd8.
Before: Ke8; Rd8, c8, b8 or a8 After: Kc8; Rd8.
Before: Kd8; Rc8, b8 or a8 After: Kc8; Rd8.
Before: Kc8; Rb8 or a8 After: Kc8; Rd8.
Before: Kb8; Ra8 After: Kc8; Rd8.
All twenty-one Black "Before" and the one "After" position of "h"-side castling
(… 0-0):
Before: Kb8; Rc8, d8, e8, f8, g8 or h8 After: Kg8; Rf8.
Before: Kc8; Rd8, e8, f8, g8 or h8 After: Kg8; Rf8.
Before: Kd8; Re8, f8, g8 or h8 After: Kg8; Rf8.
Before: Ke8; Rf8, g8 or h8 After: Kg8; Rf8.
Before: Kf8; Rg8 or h8 After: Kg8; Rf8.
Before: Kg8; Rh8 After: Kg8; Rf8.
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