Provided by: sgt-puzzles_7703-1_i386

#### NAME

```       solo - puzzle game based on Sudoku

```

#### SYNOPSIS

```       solo   [--generate  n]  [--print  wxh  [--with-solutions]  [--scale  n]
[--colour]] [game-parameters|game-ID|random-seed]

solo --version

```

#### DESCRIPTION

```       You have a square grid, which is divided  into  square  or  rectangular
blocks.  Each  square must be filled in with a digit from 1 to the size
of the grid, in such a way that

o      every row contains only one occurrence of each digit

o      every column contains only one occurrence of each digit

o      every block contains only one occurrence of each digit.

You are given some of the numbers as clues; your aim is  to  place  the
rest of the numbers correctly.

The  default  puzzle  size is 3x3 (a 9x9 actual grid, divided into nine
3x3 blocks). You can also select sizes with rectangular blocks  instead
of square ones, such as 2x3 (a 6x6 grid divided into six 3x2 blocks).

If  you  select  a  puzzle  size which requires more than 9 digits, the
additional digits will be letters of the alphabet. For example, if  you
select  3x4  then the digits which go in your grid will be 1 to 9, plus
"a", "b" and "c".

I       first       saw       this       puzzle        in        Nikoli
(http://www.nikoli.co.jp/puzzles/1/index_text-e.htm),   although   it’s
also been popularised by various newspapers under the name "Sudoku"  or
"Su  Doku".  Howard Garns is considered the inventor of the modern form
of the puzzle, and it was first published in Dell  Pencil  Puzzles  and
Word Games. A more elaborate treatment of the history of the puzzle can
be found on Wikipedia (http://en.wikipedia.org/wiki/Sudoku).

```

#### Solocontrols

```       To play Solo, simply click the mouse in any empty square and then  type
a  digit  or  letter on the keyboard to fill that square. If you make a
mistake, click the mouse in the incorrect square  and  press  Space  to
clear it again (or use the Undo feature).

If you right-click in a square and then type a number, that number will
be entered in the square as a "pencil mark". You can have pencil  marks
for multiple numbers in the same square.

The  game  pays  no  attention to pencil marks, so exactly what you use
them for is up to you: you can use them as reminders that a  particular
square  needs  to  be re-examined once you know more about a particular
number, or you can use them as lists of the possible numbers in a given
square, or anything else you feel like.

To  erase  a single pencil mark, right-click in the square and type the
same number again.

All pencil marks in a square are erased when you left-click and type  a
number,  or  when  you  left-click  and press space. Right-clicking and
pressing space will also erase pencil marks.

(All the actions described below are also available.)

```

#### Soloparameters

```       Solo allows you to configure two separate dimensions of the puzzle grid
on the "Type" menu: the number of columns, and the number of rows, into
which the main grid is divided. (The size of a block is the inverse  of
this:  for  example,  if  you  select 2 columns and 3 rows, each actual
block will have 3 columns and 2 rows.)

You can also configure the type of  symmetry  shown  in  the  generated
puzzles.  More  symmetry  makes  the puzzles look prettier but may also
make them easier, since the symmetry constraints can force  more  clues
than  necessary  to  be present. Completely asymmetric puzzles have the
freedom to contain as few clues as possible.

Finally, you can configure the difficulty  of  the  generated  puzzles.
Difficulty  levels  are  judged  by the complexity of the techniques of
deduction required to solve the puzzle: each level requires a  mode  of
reasoning  which  was not necessary in the previous one. In particular,
on difficulty levels "Trivial" and "Basic" there will be a  square  you
can   fill   in   with  a  single  number  at  all  times,  whereas  at
"Intermediate"  level  and  beyond  you  will  have  to  make   partial
deductions about the set of squares a number could be in (or the set of
numbers that could be in a square). At "Unreasonable" level, even  this
is  not  enough, and you will eventually have to make a guess, and then
backtrack if it turns out to be wrong.

Generating difficult puzzles is itself difficult: if you select one  of
the  higher  difficulty  levels, Solo may have to make many attempts at
generating a puzzle before  it  finds  one  hard  enough  for  you.  Be
prepared to wait, especially if you have also configured a large puzzle
size.

```

#### Commonactions

```       These actions are all available from the "Game" menu and  via  keyboard
shortcuts, in addition to any game-specific actions.

(On  Mac  OS  X,  to conform with local user interface standards, these

New game ("N", Ctrl+"N")
Starts a new game, with a random initial state.

Restart game
Resets the current game to  its  initial  state.  (This  can  be
undone.)

Save   Saves the current state of your game to a file on disk.

(so you can save, reload, and still Undo and Redo things you had
done before saving).

Print  Where  supported (currently only on Windows), brings up a dialog
allowing you to print an arbitrary number  of  puzzles  randomly
generated  from the current parameters, optionally including the
current puzzle. (Only for puzzles which make sense to print,  of
course   -   it’s   hard   to  think  of  a  sensible  printable
representation of Fifteen!)

Undo ("U", Ctrl+"Z", Ctrl+"_")
Undoes a single move. (You can undo moves back to the  start  of
the session.)

Redo ("R", Ctrl+"R")
Redoes a previously undone move.

Copy   Copies  the  current state of your game to the clipboard in text
format, so that you can paste it into (say) an e-mail client  or
a  web  message board if you’re discussing the game with someone
else. (Not all games support this feature.)

Solve  Transforms the puzzle instantly into its solved state. For  some
games  (Cube) this feature is not supported at all because it is
of no particular use. For other games  (such  as  Pattern),  the
solved  state  can be used to give you information, if you can’t
see how a solution can exist at all or you want  to  know  where
you  made  a  mistake.  For still other games (such as Sixteen),
automatic solution tells you nothing about how  to  get  to  the
solution,  but it does provide a useful way to get there quickly
so  that  you  can   experiment   with   set-piece   moves   and
transformations.

Some  games  (such as Solo) are capable of solving a game ID you
have typed in from elsewhere. Other games (such  as  Rectangles)
cannot  solve  a  game  ID they didn’t invent themself, but when
they did invent the game ID  they  know  what  the  solution  is
already.  Still  other  games  (Pattern) can solve some external
game IDs, but only if they aren’t too difficult.

The "Solve" command adds the solved state to the end of the undo
chain  for the puzzle. In other words, if you want to go back to
solving it yourself after seeing the answer, you can just  press
Undo.

Quit ("Q", Ctrl+"Q")
Closes the application entirely.

```

#### SpecifyinggameswiththegameID

```       There  are  two  ways  to save a game specification out of a puzzle and
recreate it later, or recreate it in somebody else’s copy of  the  same
puzzle.

The  "Specific"  and "Random Seed" options from the "Game" menu (or the
"File" menu, on Mac OS X) each show a piece of text (a "game ID") which
is sufficient to reconstruct precisely the same game at a later date.

You can enter either of these pieces of text back into the program (via
the same "Specific" or "Random Seed" menu options) at  a  later  point,
and  it  will  recreate the same game. You can also use either one as a
command line argument (on Windows or Unix); see below for more  detail.

The difference between the two forms is that a descriptive game ID is a
literal description of the initial state of the game, whereas a  random
seed  is  just a piece of arbitrary text which was provided as input to
the random number generator used to create the puzzle. This means that:

o      Descriptive game IDs tend to be longer in many puzzles (although
some,  such  as   Cube   (cube(6)),   only   need   very   short
descriptions).  So  a random seed is often a quicker way to note
down the puzzle you’re currently  playing,  or  to  tell  it  to
somebody else so they can play the same one as you.

o      Any  text  at  all  is  a  valid  random seed. The automatically
generated ones are fifteen-digit numbers, but anything will  do;
you  can type in your full name, or a word you just made up, and
a valid puzzle will be generated from it. This  provides  a  way
for  two or more people to race to complete the same puzzle: you
think of a random seed, then everybody types it in at  the  same
time,  and  nobody  has  an  advantage  due  to  having seen the
generated puzzle before anybody else.

o      It is often possible to convert puzzles from other sources (such
as  "nonograms"  or  "sudoku"  from newspapers) into descriptive
game IDs suitable for use with these programs.

o      Random seeds are not guaranteed to produce the  same  result  if
you  use  them  with  a different version of the puzzle program.
This  is  because  the  generation  algorithm  might  have  been
improved  or  modified  in  later versions of the code, and will
therefore  produce  a  different  result  when  given  the  same
sequence  of  random  numbers.  Use a descriptive game ID if you
aren’t sure that it will be used on  the  same  version  of  the
program as yours.

(Use  the  "About" menu option to find out the version number of
the program. Programs with the same version  number  running  on
different platforms should still be random-seed compatible.)

A  descriptive  game  ID  starts with a piece of text which encodes the
parameters of the current game (such as grid size).  Then  there  is  a
colon, and after that is the description of the game’s initial state. A
random seed starts with a similar string of  parameters,  but  then  it
contains a hash sign followed by arbitrary data.

If  you  enter  a  descriptive game ID, the program will not be able to
show you the random seed which generated it, since it wasn’t  generated
from  a  random  seed. If you enter a random seed, however, the program
will be able to show you the descriptive  game  ID  derived  from  that
random seed.

Note  that  the game parameter strings are not always identical between
the two forms. For some games, there will be  parameter  data  provided
with  the random seed which is not included in the descriptive game ID.
This is because  that  parameter  information  is  only  relevant  when
generating  puzzle grids, and is not important when playing them. Thus,
for example, the difficulty level in Solo (above) is not  mentioned  in
the descriptive game ID.

These additional parameters are also not set permanently if you type in
a game ID. For  example,  suppose  you  have  Solo  set  to  "Advanced"
difficulty  level,  and  then a friend wants your help with a "Trivial"
puzzle; so the friend reads out  a  random  seed  specifying  "Trivial"
difficulty,  and you type it in. The program will generate you the same
"Trivial" grid which your friend was having trouble with, but once  you
have  finished  playing  it,  when  you  ask  for  a  new  game it will
automatically go  back  to  the  "Advanced"  difficulty  which  it  was
previously set on.

```

```       The  "Type"  menu,  if  present,  may  contain  a  list  of preset game
settings. Selecting one of these will start a new random game with  the
parameters specified.

The  "Type" menu may also contain a "Custom" option which allows you to
fine-tune game parameters. The parameters  available  are  specific  to
each game and are described in the following sections.

```

#### Specifyinggameparametersonthecommandline

```       (This section does not apply to the Mac OS X version.)

The  games in this collection deliberately do not ever save information
on to the computer they run on: they have no high score tables  and  no
saved  preferences.  (This  is because I expect at least some people to
play them at work, and those people will probably appreciate leaving as
little evidence as possible!)

However, if you do want to arrange for one of these games to default to
a particular set of parameters, you can specify  them  on  the  command
line.

The  easiest  way to do this is to set up the parameters you want using
the "Type" menu (see above), and then to select "Random Seed" from  the
"Game"  or  "File" menu (see above). The text in the "Game ID" box will
be composed of two parts, separated by a hash. The first of these parts
represents  the  game  parameters  (the  size  of the playing area, for
example, and anything else you set using the "Type" menu).

If you run the game with just that parameter text on the command  line,
it will start up with the settings you specified.

For  example:  if  you run Cube (see cube(6)), select "Octahedron" from
the "Type" menu, and then go to the game ID selection, you will  see  a
string  of  the  form "o2x2#338686542711620". Take only the part before
the hash ("o2x2"), and start Cube with that text on the  command  line:
"cube o2x2".

If  you  copy  the entire game ID on to the command line, the game will
start up in the specific game that was described. This is  occasionally
a  more convenient way to start a particular game ID than by pasting it
into the game ID selection box.

(You  could  also  retrieve  the  encoded  game  parameters  using  the
"Specific"  menu  option  instead  of "Random Seed", but if you do then
some options, such as the difficulty level in Solo,  will  be  missing.
See above for more details on this.)

```

#### Unixcommand-lineoptions

```       (This section only applies to the Unix port.)

In  addition  to  being  able to specify game parameters on the command
line (see above), there are various other options:

--game

--load These options respectively determine  whether  the  command-line
argument is treated as specifying game parameters or a save file
to load. Only one should  be  specified.  If  neither  of  these
options is specified, a guess is made based on the format of the
argument.

--generate n
If  this  option  is  specified,  instead  of  a  puzzle   being
displayed, a number of descriptive game IDs will be invented and
the  game  generation  algorithms  without necessarily using the
frontend.

If game parameters are specified on the command-line, they  will
be  used  to  generate  the game IDs; otherwise a default set of
parameters will be used.

The most common use  of  this  option  is  in  conjunction  with
--print,  in which case its behaviour is slightly different; see
below.

--print wxh
If  this  option  is  specified,  instead  of  a  puzzle   being
displayed,  a  printed  representation  of  one or more unsolved
puzzles is sent to standard output, in PostScript format.

On each page of puzzles, there will be w across and h  down.  If
there  are  more  puzzles  than  wxh, more than one page will be
printed.

If --generate has also been specified,  the  invented  game  IDs
will  be  used to generate the printed output. Otherwise, a list
of game  IDs  is  expected  on  standard  input  (which  can  be
descriptive  or  random  seeds;  see  above), in the same format
produced by --generate.

For example:

net --generate 12 --print 2x3 7x7w | lpr

will generate two pages of printed Net puzzles  (each  of  which
will  have  a 7x7 wrapping grid), and pipe the output to the lpr
command, which on many systems  will  send  them  to  an  actual
printer.

There  are  various  other  options  which  affect printing; see
below.

--version
Prints version information about the game, and then quits.

The following options are only meaningful if --print is also specified:

--with-solutions
The  set  of pages filled with unsolved puzzles will be followed
by the solutions to those puzzles.

--scale n
Adjusts how big each puzzle is when printed. Larger numbers make
puzzles bigger; the default is 1.0.

--colour
Puzzles  will  be  printed  in  colour, rather than in black and
white (if supported by the puzzle).

```

#### SEEALSO

```       Full documentation in /usr/share/doc/sgt-puzzles/puzzles.txt.gz.
```