p.boxed
- | Most pieces look the same but behave very differently.
- | They generally move like an orthodox queen,
- | but capturing rules are complex.
+ | Pieces generally move like an orthodox queen,
+ | but capturing rules are quite complex.
p
| Note: 'Baroque' is the initial name thought by the author,
- | but 'Ultima' is also largely adopted.
+ | but 'Ultima' is also largely adopted.
a(href="https://www.chessvariants.com/people.dir/abbott.html")
| He prefers 'Baroque'
| , and I think me too.
p Pieces names refer to the way they capture, which is described later.
ul
- li Pawn : pawn or pincer
- li Rook : coordinator
- li Knight : long leaper
- li Bishop : chameleon
- li Queen : withdrawer
- li King : king (same behavior as in standard chess)
+ li Pawn : Pawn or Pincer
+ li Rook : Coordinator
+ li Knight : Long Leaper
+ li Bishop : Chameleon
+ li Queen : Withdrawer
+ li King : King (same behavior as in standard chess)
p.
- Besides, a new piece is introduced: the immobilizer, written by the letter 'm'
- in FEN diagrams and PGN games. It is represented by an upside-down rook:
+ Besides, a new piece is introduced: the immobilizer, written by the letter
+ 'm' in FEN diagrams and PGN games. It is represented by an upside-down rook:
figure.diagram-container
.diagram
| Note : this corresponds to the "pure rules" described on
a(href="http://www.inference.org.uk/mackay/ultima/ultima.html") this page
| , which slightly differ from the initial rules.
- | The aim is to get rid of the weird suicide rule by weakening the immobilizers lock.
- | In particular, in the original rules two adjacent immobilizer are stuck forever
- | until one is captured. Note that it's still the case if all chameleons disappeared.
+ | The aim is to get rid of the weird suicide rule by weakening the
+ | immobilizers lock. In particular, in the original rules two adjacent
+ | immobilizer are stuck forever until one is captured. Note that it's still
+ | the case if all chameleons disappeared.
h3 Capturing moves
p.
- Easy case first: the king captures as usual, by moving onto an adjacent square
- occupied by an enemy piece. But this is the only piece following orthodox rules,
- and also the only one which captures by moving onto an occupied square.
- All other pieces capture passively: they land on a free square and captured
- units are determined by some characteristics of the movement.
+ Easy case first: the king captures as usual, by moving onto an adjacent
+ square occupied by an enemy piece. But this is the only piece following
+ orthodox rules, and also the only one which captures by moving onto an
+ occupied square. All other pieces capture passively: they land on a free
+ square and captured units are determined by some characteristics of the
+ movement.
p Note 1: the immobilizer does not capture.
p.
Note 2: for passive captures, a 'X' is added at the end of the move notation,
- to indicate that something was taken (replaying the game is necessary to know where).
+ to indicate that something was taken (replaying the game is necessary to know
+ where).
h4 Pawns/Pincers
p.
- If at the end of its movement a pawn is horizontally or vertically adjacent to an
- enemy piece, which itself is next to a friendly piece (in the same direction),
- the "pinced" unit is removed from the board.
+ If at the end of its movement a pawn is horizontally or vertically adjacent
+ to an enemy piece, which itself is next to a friendly piece (in the same
+ direction), the "pinced" unit is removed from the board.
figure.diagram-container
.diagram
p.
Imagine that rook and king of the same color are two corners of a rectangle
(this works if these two pieces are unaligned).
- If at the end of a rook move an enemy piece stands in any of the two remaining
- corners, it is captured.
+ If at the end of a rook move an enemy piece stands in any of the two
+ remaining corners, it is captured.
figure.diagram-container
.diagram
h4 Long leapers (knights)
p.
- A knight captures exactly as a queen in international draughts game: by jumping
- over its enemies, as many times as it can/want but always in the same direction.
- In this respect it is less powerful than a draughts' queen:
+ A knight captures exactly as a queen in international draughts game: by
+ jumping over its enemies, as many times as it can/want but always in the same
+ direction. In this respect it is less powerful than a draughts' queen:
on the following diagram c8 or f6 cannot be captured.
However, the knight does not have to maximize the number of captured units
(as is the case in draughts).
h4 Withdrawer (queen)
p.
- The queen captures by moving away from an adjacent enemy piece, in the opposite
- direction (without jumping, the path must be free).
+ The queen captures by moving away from an adjacent enemy piece, in the
+ opposite direction (without jumping, the path must be free).
figure.diagram-container
.diagram
figcaption 1.Bd5 captures the two marked pieces.
p.
- Besides, chameleon immobilizes immobilizers (but cannot capture them since they
- do not capture).
+ Besides, chameleon immobilizes immobilizers (but cannot capture them since
+ they do not capture).
p.
- A chameleon captures the king in the same way the king captures, which means that
- a chameleon adjacent to a king gives check.
+ A chameleon captures the king in the same way the king captures, which means
+ that a chameleon adjacent to a king gives check.
h3 End of the game
p.
- Checkmate or stalemate as in standard chess. Note however that checks are more
- difficult to see, because of the exotic capturing rules. For example, on the
- following diagram the white king cannot move to e5 because then
- the black pawn could capture by moving next to it.
+ The game ends by checkmate or stalemate as in standard chess. Note however
+ that checks are more difficult to see, because of the exotic capturing rules.
+ For example, on the following diagram the white king cannot move to e5
+ because then the black pawn could capture by moving next to it.
figure.diagram-container
.diagram
a(href="https://en.wikipedia.org/wiki/Baroque_chess") Wikipedia page
| , which also gives pointers to other interesting pages (including
| chessvariants.com, as usual).
+
+p Inventor: Robert Abbott (1963)
projects / vchess.git / blobdiff