X-Git-Url: http://winboard.nl/cgi-bin?a=blobdiff_plain;f=whats_new%2Frules%2FNo.html;h=51b7193723a6a19068cfb49df7b40e7dbea075e4;hb=d783e0c4dab936f6f07cc2cf38d97c617d6c3488;hp=b6aa4fd4f82e8be5540e33d8e6a5e6d78e707d0f;hpb=4d5a9416969353d11450b39b3b1403405098472a;p=xboard.git diff --git a/whats_new/rules/No.html b/whats_new/rules/No.html index b6aa4fd..51b7193 100644 --- a/whats_new/rules/No.html +++ b/whats_new/rules/No.html @@ -1,377 +1,431 @@ - -

-No Castle - - -

- -

No Castle

-This is a shuffle variant of normal Chess, which in general destroys the possibility to castle, -as the King and Rooks are also shuffled. -For uniformity, castling is therefore always forbidden. -

Initial setup

-There is no fixed setup; -the back-rank pieces are randomly shuffled with certain restrictions. -Black's setup is the mirror image of white's, though. -

-Both sides have: -

-1 King -
-1 Queen -
-2 Rooks -
-2 Bishops -
-2 Knights -
-a2-j2, a7-j7: Pawns -

-The Bishops will start on opposite colors. -

+ + No Castle + + + + + -

Moves at a Glance

No Castle

Click on a piece below to see its moves

This is a shuffle variant of normal Chess, which in general + destroys the possibility to castle, as the King and Rooks are + also shuffled. For uniformity, castling is therefore always + forbidden.

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

+ + + - + +

Initial setup

There is no fixed setup; the back-rank pieces are + randomly shuffled with certain restrictions. Black's setup + is the mirror image of white's, though.

Both sides have:

1 King
+ 1 Queen
+ 2 Rooks
+ 2 Bishops
+ 2 Knights
+ a2-j2, a7-j7: Pawns

The Bishops will start on opposite colors.

Moves at a Glance

Click on a piece below to see its moves

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

Sliding capture or non-capture,
can be blocked on any square along the ray

Sliding capture or non-capture,
+ can be blocked on any square along the ray

-Unblockable leap (capture or non-capture) -

-Non-capture only -

Unblockable leap (capture or non-capture)

-Capture only -

Non-capture only

Capture only

- -

:
:
:
:

- -

-Piece -	-ID -	-value -	-Moves (Betza notation) -	-Remarks -
-King -	-K -	-- -	-K -	-Can castle with Rook, moving 2 steps towards it -
-Queen -	-Q -	-9.5 -	-RB or Q -	- -
-Rook -	-R -	-5 -	-R -	- -
-Bishop -	-B -	-3.25 -	-B -	-Color-bound -
-Knight -	-N -	-3.25 -	-N -	- -
-Pawn -	-P -	-1 -	-mfWcfF -	-Promotes to Q, R, B, or N on reaching last rank -

Pawn peculiarities

Pawns capture differently from how they move (straight move, diagonal capture).
Pawns can move two squares straight ahead from their initial position, provided they are not blocked.
On the move immediately after such a double push, they can be captured en passant by another Pawn, -as if they had only moved 1 square ahead.
Pawns promote to another (non-royal) piece of choice when they reach last rank.

General rules

It is not allowed to expose your King to check.
The game is won by checkmating the opponent's King.
Stalemate (no legal moves, but not in check) is a draw.

Differences with FIDE

-The Back-rank pieces are randomly shuffled on the back rank in the opening setup. -There is no castling. -

Strategy issues

-It is not possible to force checkmate on a bare King with just a single Bishop or Knight (in addition to your own King). -Two Knights cannot do that either. -

-Bishops are confined to squares of a single color. -Having Bishops on both colors compensates this weakness, and is worth an extra 0.5 on top of their added value. -

+ +

:
+ :
+ :
+ :

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

Piece	ID	value	Moves (Betza notation)	Remarks
King	K	-	K	Can castle with Rook, moving 2 steps towards it
Queen	Q	9.5	RB or Q
Rook	R	5	R
Bishop	B	3.25	B	Color-bound
Knight	N	3.25	N
Pawn	P	1	mfWcfF	Promotes to Q, R, B, or N on reaching last rank

+ +

Pawn peculiarities

+ +

Pawns capture differently from how they move (straight + move, diagonal capture).
Pawns can move two squares straight ahead from their + initial position, provided they are not blocked.
On the move immediately after such a double push, they can + be captured en passant by another Pawn, as if they had only + moved 1 square ahead.
Pawns promote to another (non-royal) piece of choice when + they reach last rank.

+ +

General rules

+ +

It is not allowed to expose your King to check.
The game is won by checkmating the opponent's King.
Stalemate (no legal moves, but not in check) is a + draw.

+ +

Differences with FIDE

+ +

The Back-rank pieces are randomly shuffled on the back rank in + the opening setup. There is no castling.

+ +

Strategy issues

+ +

It is not possible to force checkmate on a bare King with just + a single Bishop or Knight (in addition to your own King). Two + Knights cannot do that either.

+ +

Bishops are confined to squares of a single color. Having + Bishops on both colors compensates this weakness, and is worth an + extra 0.5 on top of their added value.

+ +