Doc: more on shogi variants in general, and Mini Shogi in particular.

diff --git a/doc/gnushogi.texi b/doc/gnushogi.texi
index ddf6033..39e9bd8 100644 (file)
--- a/doc/gnushogi.texi
+++ b/doc/gnushogi.texi
@@ -129,16 +129,19 @@ GNU shogi is a program that plays shogi, the Japanese version of chess,
 against a human (or computer) opponent.  This file describes how to use
 GNU shogi and also gives background information about the game of shogi.
 
-This file describes GNU Shogi version 1.3.2.  It was written by Mike
-Vanier @email{mvanier@@cs.caltech.edu}, maintainer of GNU shogi at
-that time.
+This file mostly describes GNU Shogi version 1.3.2.  It was written by
+Mike Vanier @email{mvanier@@cs.caltech.edu}, maintainer of GNU shogi
+at that time.
 
 GNU Shogi is currently maintained by Yann Dirson
 @email{ydirson@@free.fr}.
 
 
 GNU Shogi is actually one program, 'gnushogi', the text-based program
-which also contains the game-playing engine.
+which also contains the game-playing engine.  By default it will play
+Standard Shogi, but can be built to play Mini Shogi (with GNU Shogi
+1.4.x, you will need to do that explicitely using `./configure
+--enable-minishogi'', but 1.5 will make this more straightforward).
 
 The GNU Shogi distribution also contains the 'xshogi' program, an
 X-Window graphical interface to gnushogi.  XShogi was forked off GNU
@@ -1057,7 +1060,7 @@ size of the game, checkmates can occur very suddenly (and often very
 early on) if one player makes a wrong move.  Tenjiku also has a small
 but fanatical following, one of whom (Colin Adams) has written a book on
 the game which is available for download at
-@uref{http://www.colina.demon.co.uk/tenjiku.html}.
+@uref{http://wayback.archive.org/web/20120717085827/http://www.colina.demon.co.uk/tenjiku.html}.
 
 @item
 Dai-dai (great-great) shogi, played on a 17x17 board with 192 pieces.
@@ -1090,6 +1093,32 @@ playable, assuming one has the time.
 
 @end enumerate
 
+Many modern variants have also been devised, usually on small boards,
+and often by western people.  Those include:
+
+@enumerate
+
+@item
+Mini Shogi, played on a 5x5 board with 12 pieces.  Its rules are
+nearly identical to Standard Shogi, and GNU Shogi has some support for
+it.
+
+@item
+Judkins Shogi, similar to Mini Shogi on a 6x6 board.
+
+@item
+Cannon Shogi, played on a 9x9 board, adds pieces inspired by the
+Cannon found in Xiang Qi (chinese chess)
+
+@item
+Sannin Shogi, a 3-player variant on an hexagonal board, with specific
+rules governing alliance between two players
+
+@item
+Kyoto Shogi, Micro Shogi, and several others are much more different.
+
+@end enumerate
+
 @c
 @c Differences between shogi and chess.
 @c
@@ -2093,6 +2122,10 @@ unfortunately it only runs on Windows :-(
 This page has an almost unimaginable variety of rules for different
 chess variants, including many shogi variants (historical and non-historical).
 
+@item Wikipedia's shogi variant pages: @uref{http://en.wikipedia.org/wiki/Category:Shogi_variants}
+Those pages contain a large number of variant rules, both ancient and
+modern.
+
 @end table
 
 @c -----------------