X-Git-Url: http://winboard.nl/cgi-bin?a=blobdiff_plain;f=whats_new%2Frules%2FSho.html;h=a90d9dcc2ef2bc5f5f79ca77071d84382e13b8a6;hb=d783e0c4dab936f6f07cc2cf38d97c617d6c3488;hp=a44efb0253e00d31f985aa6f7ba984e593d0a729;hpb=4d5a9416969353d11450b39b3b1403405098472a;p=xboard.git diff --git a/whats_new/rules/Sho.html b/whats_new/rules/Sho.html index a44efb0..a90d9dc 100644 --- a/whats_new/rules/Sho.html +++ b/whats_new/rules/Sho.html @@ -1,433 +1,510 @@ - -

-Sho Shogi - - - -

Sho Shogi (precurser of modern Japanese Chess)

-Sho Shogi means 'small Shogi', and was one of the smaller variants of Japanese Chess, -living in the shadow of its far more popular big brother, Chu Shogi ('middle Shogi'). -Until people invented piece drops for the captured pieces. -The small game was much more suitable for playing with piece drops, -and a small adaptation (eliminating the Elephant) made it into the modern game. -While Chu Shogi is in fact utterly unsuitable for playing with drops. -And in the end, the drops won the day! -

- -	- Initial setup - -e1, e8: King - -b8, h2: Rook - -b2, h8: Bishop - -e2, e8: Elephant - -d1, d8, f1, f8: Gold General - -c1, c8, g1, g8: Silver General - -b1, b8, h1, h8: (Shogi) Knight - -a1, a8, i1, i8: Lance - -a3-i3, a7-i7: Pawns - -

+ + Sho Shogi + + + + + -

Moves at a Glance

Sho Shogi (precurser of modern Japanese Chess)

Click on a piece below to see its moves

Sho Shogi means 'small Shogi', and was one of the smaller + variants of Japanese Chess, living in the shadow of its far more + popular big brother, Chu Shogi ('middle Shogi'). Until people + invented piece drops for the captured pieces. The small game was + much more suitable for playing with piece drops, and a small + adaptation (eliminating the Elephant) made it into the modern + game. While Chu Shogi is in fact utterly unsuitable for playing + with drops. And in the end, the drops won the day!

- + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +

+ + + - + +

Initial setup

e1, e8: King
+ b8, h2: Rook
+ b2, h8: Bishop
+ e2, e8: Elephant
+ d1, d8, f1, f8: Gold General
+ c1, c8, g1, g8: Silver General
+ b1, b8, h1, h8: (Shogi) Knight
+ a1, a8, i1, i8: Lance
+ a3-i3, a7-i7: Pawns

Moves at a Glance

Click on a piece below to see its moves

+ + + - - - - - - - - - + - + - - - - - - - - - + - + - - - - - - - - - + - + - - - - - - - - - + - + - - - - - - - - - + - + - - - - - - - - - + - + - - - - - - - - - + - + - - - - - - - - - + - + - - - -

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-Piece -	-ID -	-value -	-Moves (Betza notation) -	-Remarks -
-King -	-K -	-- -	-K -	- -
-Rook -	-R -	-15 -	-R -	-Promotes to Dragon -
-Bishop -	-B -	-13 -	-B -	-Promotes to Horse -
-Elephant -	-E -	-11 -	-FsfW -	-Promotes to a second King -
-Gold -	-G -	-9 -	-WfF -	- -
-Silver -	-S -	-8 -	-FfW -	-promotes to Gold -
-Knight -	-N -	-6 -	-fN -	-promotes to Gold -
-Lance -	-L -	-5 -	-fN -	-promotes to Gold -
-Pawn -	-P -	-1 -	-fW -	-promotes to Gold -
-Promoted pieces (not initially present) -
-Dragon -	-D or +R -	-18 -	-RF -	- -
-Horse -	-H or +B -	-15.5 -	-BW -	- -

Pawn peculiarities

Pawns move and capture straight ahead.
It is forbidded to have more than one Pawn in the same file.
It is forbidden to checkmate the opponent with a Pawn drop.
-

General rules

The game is won by capturing the opponent's only King.
Pieces promote at the end of a move into, in or out of the promotion zone.
The promotion zone consists of the last three ranks.
Perpetual checking is forbidden, and would be ruled a loss on the 4-fold repeat.

XBoard interface issues

-Sho Shogi is not a standard variant in XBoard. -It has to be played in XBoard by selecting regular Shogi -after having set the holdings-size override in the New Variant dialog to 0, to disable piece drops. -This is not all, however; the pieceToCharTable has to be changed to tell XBoard that the Elephant participates. -This can unfortunately only be done through command-line options. -

-It is therefore best to put all options needed to massage XBoard into playing this variant in a settings file sho.xop. -On install .xop files are associated with XBoard, so clicking them would start XBoard with the options in that file. -You could then set everything in the file needed to start in Sho-Shogi mode: -

+ +

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+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +

Piece	ID	value	Moves (Betza notation)	Remarks
King	K	-	K
Rook	R	15	R	Promotes to Dragon
Bishop	B	13	B	Promotes to Horse
Elephant	E	11	FsfW	Promotes to a second King
Gold	G	9	WfF
Silver	S	8	FfW	promotes to Gold
Knight	N	6	fN	promotes to Gold
Lance	L	5	fN	promotes to Gold
Pawn	P	1	fW	promotes to Gold
Promoted pieces (not initially present)
Dragon	D or +R	18	RF
Horse	H or +B	15.5	BW

+ +

Pawn peculiarities

+ +

Pawns move and capture straight ahead.
It is forbidded to have more than one Pawn in the same + file.
It is forbidden to checkmate the opponent with a Pawn + drop.

+ +

General rules

+ +

The game is won by capturing the opponent's only King.
Pieces promote at the end of a move into, in or out of the + promotion zone.
The promotion zone consists of the last three ranks.
Perpetual checking is forbidden, and would be ruled a loss + on the 4-fold repeat.

+ +

XBoard interface issues

+ +

Sho Shogi is not a standard variant in XBoard. It has to be + played in XBoard by selecting regular Shogi after having set the + holdings-size override in the New Variant dialog to 0, to disable + piece drops. This is not all, however; the pieceToCharTable has + to be changed to tell XBoard that the Elephant participates. This + can unfortunately only be done through command-line options.

+ +

It is therefore best to put all options needed to massage + XBoard into playing this variant in a settings file sho.xop. On + install .xop files are associated with XBoard, so clicking them + would start XBoard with the options in that file. You could then + set everything in the file needed to start in Sho-Shogi mode:

 -variant shogi
 -holdingsSize 0
 -pieceToCharTable "PNBRLSE..G.+.++.++Kpnbrlse..g.+.++.++k"
-

-Since the game is just a subset of regular Shogi, legality testing can remain on. -You could also specify your favorite Sho-Shogi engine with -fcp in that file. -

-Of course there will always be people that prefer an oriental look, with pentagonal kanji tiles. -XBoard comes with a set of kanji pieces in the 'themes/shogi' sub-directory of its data directory -(e.g. /usr/local/share/games/xboard). -You can select that as -pieceImageDirectory (-pid for short) from the command line, or from the View -> Board dialog. -You would also have to tick 'Flip black pieces Shogi style' there (or use the option -flipBlack true) -to make sure the pieces won't go upside down when you flip the view. -

Differences with FIDE

-In stead of Queens you have Silver and Gold Generals, and Lances. -The Knight only has the two forward-most moves of a FIDE Knight. -Pawns capture straight ahead. -There is no castling, Pawn double-push or e.p. capture. -Other pieces than Pawns also promote. -The promotion zone is three ranks deep in stead of one. -You have an Elphant that can promote to a second King. -

Strategy issues

-Most pieces are quite slow, or not manoeuvrable at all, and their practical value is very dependent on how far they are from the Kings. -

+Since the game is just a subset of regular Shogi, legality +testing can remain on. You could also specify your favorite +Sho-Shogi engine with -fcp in that file. + +

Of course there will always be people that prefer an oriental + look, with pentagonal kanji tiles. XBoard comes with a set of + kanji pieces in the 'themes/shogi' sub-directory of its data + directory (e.g. /usr/local/share/games/xboard). You can select + that as -pieceImageDirectory (-pid for short) from the command + line, or from the View -> Board dialog. You would also have to + tick 'Flip black pieces Shogi style' there (or use the option + -flipBlack true) to make sure the pieces won't go upside + down when you flip the view.

+ +

Differences with FIDE

+ +

In stead of Queens you have Silver and Gold Generals, and + Lances. The Knight only has the two forward-most moves of a FIDE + Knight. Pawns capture straight ahead. There is no castling, Pawn + double-push or e.p. capture. Other pieces than Pawns also + promote. The promotion zone is three ranks deep in stead of one. + You have an Elphant that can promote to a second King.

+ +

Strategy issues

+ +

Most pieces are quite slow, or not manoeuvrable at all, and + their practical value is very dependent on how far they are from + the Kings.

+ +