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- - + The licenses for most software are designed to take away your +freedom to share and change it. By contrast, the GNU General Public +License is intended to guarantee your freedom to share and change free +software--to make sure the software is free for all its users. This +General Public License applies to most of the Free Software +Foundation's software and to any other program whose authors commit to +using it. (Some other Free Software Foundation software is covered by +the GNU Library General Public License instead.) You can apply it to +your programs, too. +
+ + When we speak of free software, we are referring to freedom, not +price. Our General Public Licenses are designed to make sure that you +have the freedom to distribute copies of free software (and charge for +this service if you wish), that you receive source code or can get it +if you want it, that you can change the software or use pieces of it +in new free programs; and that you know you can do these things. +
+ + To protect your rights, we need to make restrictions that forbid +anyone to deny you these rights or to ask you to surrender the rights. +These restrictions translate to certain responsibilities for you if you +distribute copies of the software, or if you modify it. +
+ + For example, if you distribute copies of such a program, whether +gratis or for a fee, you must give the recipients all the rights that +you have. You must make sure that they, too, receive or can get the +source code. And you must show them these terms so they know their +rights. +
+ + We protect your rights with two steps: (1) copyright the software, and +(2) offer you this license which gives you legal permission to copy, +distribute and/or modify the software. +
+ + Also, for each author's protection and ours, we want to make certain +that everyone understands that there is no warranty for this free +software. If the software is modified by someone else and passed on, we +want its recipients to know that what they have is not the original, so +that any problems introduced by others will not reflect on the original +authors' reputations. +
+ + Finally, any free program is threatened constantly by software +patents. We wish to avoid the danger that redistributors of a free +program will individually obtain patent licenses, in effect making the +program proprietary. To prevent this, we have made it clear that any +patent must be licensed for everyone's free use or not licensed at all. +
+ + The precise terms and conditions for copying, distribution and +modification follow. +
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- +This License applies to any program or other work which contains +a notice placed by the copyright holder saying it may be distributed +under the terms of this General Public License. The "Program", below, +refers to any such program or work, and a "work based on the Program" +means either the Program or any derivative work under copyright law: +that is to say, a work containing the Program or a portion of it, +either verbatim or with modifications and/or translated into another +language. (Hereinafter, translation is included without limitation in +the term "modification".) Each licensee is addressed as "you".
-"Japanese chess cedes nothing in depth or beauty to the European -game... it is at least as interesting." +Activities other than copying, distribution and modification are not +covered by this License; they are outside its scope. The act of +running the Program is not restricted, and the output from the Program +is covered only if its contents constitute a work based on the +Program (independent of having been made by running the Program). +Whether that is true depends on what the Program does. +
+
- +You may copy and distribute verbatim copies of the Program's +source code as you receive it, in any medium, provided that you +conspicuously and appropriately publish on each copy an appropriate +copyright notice and disclaimer of warranty; keep intact all the +notices that refer to this License and to the absence of any warranty; +and give any other recipients of the Program a copy of this License +along with the Program.
---- Alexander Alekhine
-(quoted in David Pritchard, The Encyclopedia of Chess Variants) +You may charge a fee for the physical act of transferring a copy, and +you may at your option offer warranty protection in exchange for a fee. ++
- +You may modify your copy or copies of the Program or any portion +of it, thus forming a work based on the Program, and copy and +distribute such modifications or work under the terms of Section 1 +above, provided that you also meet all of these conditions:
-"... shogi [is] by far the most complex form of chess that has ever -achieved widespread popularity." +
+
- +You must cause the modified files to carry prominent notices +stating that you changed the files and the date of any change. +
+
- +You must cause any work that you distribute or publish, that in +whole or in part contains or is derived from the Program or any +part thereof, to be licensed as a whole at no charge to all third +parties under the terms of this License.
---- R. Wayne Schmittberger, New Rules for Classic Games -
-Shogi is the version of chess played in Japan. It is strikingly -different from standard chess (which I shall refer to henceforth as -"international chess") and also to all other regional variants, -because captured pieces can re-enter play on the side of the capturer. -This has several interesting effects on the play of the game: +These requirements apply to the modified work as a whole. If +identifiable sections of that work are not derived from the Program, +and can be reasonably considered independent and separate works in +themselves, then this License, and its terms, do not apply to those +sections when you distribute them as separate works. But when you +distribute the same sections as part of a whole which is a work based +on the Program, the distribution of the whole must be on the terms of +this License, whose permissions for other licensees extend to the +entire whole, and thus to each and every part regardless of who wrote it. +
+ +Thus, it is not the intent of this section to claim rights or contest +your rights to work written entirely by you; rather, the intent is to +exercise the right to control the distribution of derivative or +collective works based on the Program. +
+ +In addition, mere aggregation of another work not based on the Program +with the Program (or with a work based on the Program) on a volume of +a storage or distribution medium does not bring the other work under +the scope of this License. +
+
-Shogi is much more complex than international chess, at least in -terms of the average number of possible moves per turn (estimated at -about 35 for chess and at about 80 for shogi). +
-There are almost no draws (about 1-2% of all games in professional play). +The source code for a work means the preferred form of the work for +making modifications to it. For an executable work, complete source +code means all the source code for all modules it contains, plus any +associated interface definition files, plus the scripts used to +control compilation and installation of the executable. However, as a +special exception, the source code distributed need not include +anything that is normally distributed (in either source or binary +form) with the major components (compiler, kernel, and so on) of the +operating system on which the executable runs, unless that component +itself accompanies the executable. +
+ +If distribution of executable or object code is made by offering +access to copy from a designated place, then offering equivalent +access to copy the source code from the same place counts as +distribution of the source code, even though third parties are not +compelled to copy the source along with the object code. +
-There are no "endgames" in the standard chess sense; all pieces remain -in play throughout the game. Games typically end in a race to -checkmate the other player before being checkmated oneself. +
-Ownership of a piece is not indicated by the color of the piece; -instead, pieces are wedge-shaped and point towards the opponent. The -name of the piece is inscribed in Kanji characters on the front of the -piece. +If any portion of this section is held invalid or unenforceable under +any particular circumstance, the balance of the section is intended to +apply and the section as a whole is intended to apply in other +circumstances. +
+ +It is not the purpose of this section to induce you to infringe any +patents or other property right claims or to contest validity of any +such claims; this section has the sole purpose of protecting the +integrity of the free software distribution system, which is +implemented by public license practices. Many people have made +generous contributions to the wide range of software distributed +through that system in reliance on consistent application of that +system; it is up to the author/donor to decide if he or she is willing +to distribute software through any other system and a licensee cannot +impose that choice. +
+ +This section is intended to make thoroughly clear what is believed to +be a consequence of the rest of this License. +
-Most importantly: it's more fun than other forms of chess :-) +
- +Each version is given a distinguishing version number. If the Program +specifies a version number of this License which applies to it and "any +later version", you have the option of following the terms and conditions +either of that version or of any later version published by the Free +Software Foundation. If the Program does not specify a version number of +this License, you may choose any version ever published by the Free Software +Foundation. +
+
-Shogi is extremely popular in Japan; it has been estimated that 20 -million Japanese can play shogi, of which perhaps 1 million are active -players. It is even more popular there than the game of go, Japan's -other favorite board game. There are a number of professional players -who make a considerable amount of money playing in shogi tournaments, -and the game receives extensive newpaper and television coverage. -Despite this, the game has yet to become popular outside of Japan. Part -of this is because the Kanji characters on the pieces scare away some -people, but mostly it's due, I think, to lack of exposure to the game -and to the difficulty of finding opponents. I hope that GNU shogi will -help introduce shogi to a wider audience. +
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