The programs
Most command-line switches have two versions:
-
A short POSIX one which is a dash followed by a letter or a few. This option must come standalone and not clustered:
-sam
is not equivalent to specifying-s
,-a
and-m
. -
A long switch which is two dashes followed by the command string. For example:
--prelude
,--st-name
.
If command line arguments have parameters, they are followed in separate
parameters - Freecell Solver won’t recognise a parameter preceded by an equal
sign. --st-name=myname
is invalid, while --st-name myname
is OK.
The Scope of the Options
The scope of the options is mentioned along with them. Options can be:
-
Global - affects all the soft-threads.
-
Instance-specific - affects an instance (separated by the
--next-instance
option below). Each instance consists of several flares. -
Flare-specific - affects the current flare (separated by the
--next-flare
option below. Each flare consists of several hard threads. -
Hard-thread-specific - affects the current hard thread (separated by the
--next-hard-thread
option below. Each hard thread consists of several soft threads. -
Soft-thread-specific - affects only the current soft thread.
Getting Help
-h , --help
Global
This option displays a help text on the screen. This help gives a help display summarizing some ways to use the program and get more help.
--version
Global
This option displays the version number of the components that make the executable (and then exits).
--help-configs
Global
Some help on the various configurations of Freecell Solver.
--help-options
Global
A help screen giving an overview of all available options.
--help-real-help
Global
Explains how to change the default help screen to a different one.
--help-short-sol
Global
How to generate shorter solutions.
--help-summary
Global
The default help screen.
Output Options
-p , --parseable-output
Global
This option will display the columns in a format that can be more easily
manipulated by text-processing programs such as grep or perl. Namely,
The freecells will be displayed in one line, and the foundations in a
separate line. Plus, Each column will be displayed horizontally, in its
own line, while beginning with a :
.
-t , --display-10-as-t
Global
This option will display the 10 cards as a capital T
instead of a 10
.
Thus, the cards will be more properly aligned.
For example, here is a command line using -p
and -t
:
$ pi-make-microsoft-freecell-board 24 | fc-solve -p -t -=-=-=-=-=-=-=-=-=-=-=- Foundations: H-0 C-0 D-0 S-0 Freecells: : 4C 2C 9C 8C QS 4S 2H : 5H QH 3C AC 3H 4H QD : QC 9S 6H 9H 3S KS 3D : 5D 2S JC 5C JH 6D AS : 2D KD TH TC TD 8D : 7H JS KH TS KC 7C : AH 5S 6S AD 8H JD : 7S 6C 7D 4D 8S 9D ==================== Foundations: H-0 C-0 D-0 S-A Freecells: : 4C 2C 9C 8C QS 4S 2H : 5H QH 3C AC 3H 4H QD : QC 9S 6H 9H 3S KS 3D : 5D 2S JC 5C JH 6D : 2D KD TH TC TD 8D : 7H JS KH TS KC 7C : AH 5S 6S AD 8H JD : 7S 6C 7D 4D 8S 9D
-c , --canonized-order-output
Global
Freecell Solver re-arranges the stacks and freecells in a given state according to their first card. It keeps their actual position in a separate place, but internally it uses their canonized place. Use this option, if you want Freecell Solver to display them in that order. One should be warned that that way the place of a given stack in the board will not be preserved throughout the solution.
-m , --display-moves
Global
This option will display the moves instead of the intermediate states. Each move will be displayed in a separate line, in a format that is human-readable, but that can also be parsed and analyzed by a computer program with some effort on the programmer’s part.
For example:
$ pi-make-microsoft-freecell-board 24 | fc-solve -m | head -30 -=-=-=-=-=-=-=-=-=-=-=- Move a card from stack 3 to the foundations ==================== Move a card from stack 6 to freecell 0 ==================== Move a card from stack 6 to freecell 1
-sn , --standard-notation
Global
This option will display the moves in standard notation in which every move consists of two characters and there are ten moves in a line. Naturally, this option will only become apparent if the display moves is specified. (it does not implicitly specify it, though).
For more information regarding standard notation refer to the following web-page:
-snx , --standard-notation-extended
Global
This option is similar to the previous one, except that when a sequence move is made to an empty stack with more than one card in the sequence, the move will be followed with "v" and the number of cards moved in hexadecimal.
-sam , --display-states-and-moves
Global
This option will display both the intermediate states and the moves that are needed to move from one to another. The standard notation option applies to it to.
$ pi-make-microsoft-freecell-board 24 | fc-solve -sam -p -t | head -50 -=-=-=-=-=-=-=-=-=-=-=- Foundations: H-0 C-0 D-0 S-0 Freecells: : 4C 2C 9C 8C QS 4S 2H : 5H QH 3C AC 3H 4H QD : QC 9S 6H 9H 3S KS 3D : 5D 2S JC 5C JH 6D AS : 2D KD TH TC TD 8D : 7H JS KH TS KC 7C : AH 5S 6S AD 8H JD : 7S 6C 7D 4D 8S 9D ==================== Move a card from stack 3 to the foundations Foundations: H-0 C-0 D-0 S-A Freecells: : 4C 2C 9C 8C QS 4S 2H : 5H QH 3C AC 3H 4H QD : QC 9S 6H 9H 3S KS 3D : 5D 2S JC 5C JH 6D : 2D KD TH TC TD 8D : 7H JS KH TS KC 7C : AH 5S 6S AD 8H JD : 7S 6C 7D 4D 8S 9D ==================== Move a card from stack 6 to freecell 0 Foundations: H-0 C-0 D-0 S-A Freecells: JD : 4C 2C 9C 8C QS 4S 2H : 5H QH 3C AC 3H 4H QD : QC 9S 6H 9H 3S KS 3D : 5D 2S JC 5C JH 6D : 2D KD TH TC TD 8D : 7H JS KH TS KC 7C : AH 5S 6S AD 8H : 7S 6C 7D 4D 8S 9D ==================== Move a card from stack 6 to freecell 1
-pi , --display-parent-iter
Global
This option (assuming the -s and -i options are specified) will also
display the iteration index of the state from which the current state
was derived. This is especially useful for BeFS (so-called a-star
) or
BFS scans.
-o [filename] , --output [filename]
Global
Outputs to a file instead of standard output. So for example:
$ fc-solve -o 2405.solution.txt 2405.board
Will put the solution to the file in 2405.board in the file
2405.solution.txt
. This will also be done using:
$ fc-solve --output 2405.solution.txt 2405.board
-sel , --show-exceeded-limits
Global
This option will display a different status message ("Iterations count exceeded.") instead of "I could not solve this game." in case the iterations count was exceeded. This is recommended because the "I could not solve this game." message can also mean that the entire game graph was fully traversed (within the limitations of the specified moves' types) and so no solution is possible.
This option is not the default, to retain compatibility with previous versions of Freecell Solver, and was added in version 3.12.0 of fc-solve.
-hoi , --hint-on-intractable
Global
Presents the moves to the intermediate reached state, if the maximal number of iterations was reached without a conclusion (= "intractable").
This option is not the default, to retain compatibility with previous versions of Freecell Solver, and was added in version 4.20.0 of fc-solve.
Game Variants Options
--freecells-num [Number of Freecells]
Global
This option specifies the number of freecells which are available to the program. Freecell Solver can use any number of freecells as long as it does not exceed its maximal number.
This maximum is hard-coded into the program, and can be specified at
compile-time by modifying the file config.h
. See the file INSTALL
(or alternatively INSTALL.html
) for details.
--stacks-num [Number of Stacks]
Global
This option specifies the number of stacks present in the board. Again,
this number cannot exceed the maximal number of stacks, which can be
specified in the file config.h
during compile-time of Freecell
Solver.
--decks-num [Number of Decks]
Global
This options specifies how many decks are found in the board. This number cannot exceed the maximal number of decks, which can be specified by the Freecell Solver build system.
--sequences-are-built-by {suit|alternate_color|rank}
Global
This option specifies whether a card sequence is built by suit or by alternate colour or by rank regardless of suit.
--sequence-move {limited|unlimited}
Global
This option specifies whether the sequence move is limited by the number of freecells or vacant stacks or not.
--empty-stacks-filled-by {kings|none|all}
Global
Specifies which cards can fill an empty stack.
--game [game] , --preset [game] , -g [game]
Global
Specifies the type of game. Each preset implies several of the settings options above and sometimes even the moves’ order below. The default configuration is for Freecell.
Available presets:
|
Baker’s Dozen |
|
Baker’s Game |
|
Beleaguered Castle |
|
Citadel |
|
Cruel |
|
Der Katzenschwanz |
|
Die Schlange |
|
Eight Off |
|
Fan |
|
Forecell |
|
Freecell (default) |
|
Good Measure |
|
Kings' Only Baker’s Game |
|
Relaxed Freecell |
|
Relaxed Seahaven Towers |
|
Seahaven Towers |
|
Simple Simon |
|
Streets and Alleys |
Note: in order to solve Der Katzenschwanz and Die Schlange I recommend you compile Freecell Solver with the INDIRECT_STACK_STATES option, or else it will consume much more memory. For details consult the file INSTALL.
Examples
To solve PySol Eight Off game No. 1,000 type:
$ make_pysol_freecell_board.py 1000 eight_off | fc-solve -g eight_off
To solve PySol Baker’s Game No. 50, type:
$ make_pysol_freecell_board.py 50 bakers_game | fc-solve -g bakers_game
If you want to solve a game similar to Freecell only with sequences built by rank, and unlimited sequence move, do:
$ fc-solve -g freecell --sequences-are-built-by rank --sequence-move unlimited
Solving Algorithm Options
-mi [Iterations num] , --max-iters [Iterations num]
Global
This parameter limits the maximal number of states to check. This will give a rough limit on the time spent to solve a given board.
-md [Maximal depth] , --max-depth [Maximal depth]
Not currently implemented
Freecell Solver recurses into the solution. This parameter specifies a maximal recursion depth. Generally speaking, it’s not a good idea to set it, because that way several important intermediate states may become inaccessible.
-mss [num] , --max-stored-states [num]
Global
Limits the number of the states stored by the program in the computer’s memory. This differs from the maximal number of iterations in the sense, that it is possible that a stored state was not checked yet.
-tmss [num] , --trim-max-stored-states [num]
Instance-wide
This also limits the number of trimmed stored states, but this time will try to trim them once the limit has been reached (which is time consuming and may cause states to be traversed again in the future).
-to [Moves’ Order] , --tests-order [Moves Order]
Soft-thread-specific
This option specifies the order in which Freecell Solver will try the different types of moves (formerly termed "tests") that it can perform. Each move is specified by one character, and they are performed in the order in which they appear in the parameter string. You can omit moves by not including their corresponding characters in the string.
The moves along with their characters are:
Freecell Moves: |
|
0 |
put top stack cards in the foundations. |
1 |
put freecell cards in the foundations. |
2 |
put freecell cards on top of stacks. |
3 |
put non-top stack cards in the foundations. |
4 |
move stack cards to different stacks. |
5 |
move stack cards to a parent card on the same stack. |
6 |
move sequences of cards onto free stacks. |
7 |
put freecell cards on empty stacks. |
8 |
move cards to a different parent. |
9 |
empty an entire stack into the freecells. |
j |
put freecell cards on empty stacks and right away put cards on top. |
Atomic Freecell Moves: |
|
A |
move a stack card to an empty stack. |
B |
move a stack card to a parent on a different stack. |
C |
move a stack card to a freecell. |
D |
move a freecell card to a parent. |
E |
move a freecell card to an empty stack. |
Simple Simon Moves: |
|
a |
move a full sequence to the foundations. |
b |
move a sequence to a true parent of his. |
c |
move a whole stack sequence to a false parent (in order to clear the stack) |
d |
move a sequence to a true parent that has some cards above it. |
e |
move a sequence with some cards above it to a true parent. |
f |
move a sequence with a junk sequence above it to a true parent that has some cards above it. |
g |
move a whole stack sequence to a false parent which has some cards above it. |
h |
move a sequence to a parent on the same stack. |
i |
move any sequence to a false parent (using it may make the solution much slower). |
Manipulating the moves order can be very helpful to the quick solution of a given board. If you found that a certain board cannot be solved in after a long time or in a certain maximal number of iterations, you should try different moves' orders. Usually, one can find a moves order that solves a board very quickly.
Note that this moves order usually makes sense only for the Soft-DFS
and Random DFS scans (see the --method
option below).
Also note that Freecell moves are not suitable for solving Simple Simon games and Simple Simon moves are not suitable for solving anything except Simple Simon.
Moves can be grouped together into groups using parenthesis
(e.g: "(0123)") or square brackets ("[012][3456789]"). Such grouping is
only relevant to the Random DFS scan (see below). A group may optionally
be followed by the equal sign "=" and by an ordering specifier. If one
specifies "=rand()", then the derived states will be randomised based on the
seed (which is what happens if no equal sign is specified). On the other
hand, if one specifies something like "=asw(5,0,5,0,0,5)", then the numbers
inside the parentheses will be treated as weights for the same ordering
function used by the -asw
flag (see below).
If the order specifier is "=all()" then all the moves in the group will be run, even if some derived states have been yielded by earlier moves in the group. ( This was added in version 5.24.0. )
-dto2 [Min Depth],[Moves' Order] , --depth-tests-order2 [Min Depth],[Moves' Order]
Soft-thread-specific
Sets the Moves' order starting from the minimal depth onwards. This way, if a Soft-DFS scan recurses deeply into the game, it will use a different moves' order.
Note that if you set the moves' order of a minimal depth of say 50, then it will override all the moves' order of 50 and above. As a result, it is recommended that you set the minimal depth moves order in an increasing depth.
It should be noted that the -to
or --tests-order
option above is
equivalent to using this option with a minimal depth of 0.
Here are some examples:
-to 0123456789 -dto2 30,0138924567
This sets the moves' order to 0123456789
for all depths below 30 and to
0138924567
for all depths above it.
-to 0123457 -dto2 10,750123 -dto2 25,710235
This sets the moves' order to 0123457
for depths -9 (those below 10),
to 750123
for depths 10-24, and to 710235
for the depths 25 onwards.
-to 0123457 -dto2 "10,[012357]=asw(1)"
This sorts the moves starting from 10 onward based on the asw() function.
-to 0123457 -dto2 "10,[012357]=rand()"
This randomises the moves from 10 onward.
-to 0123457 -dto2 "10,[012357]"
This does the same thing as the previous example.
Note : This option should be used instead of the older -dto
option given
below which mutilates the moves order parameter and is still provided for
backward compatibility.
-dto [Min Depth],[Moves' Order] , --depth-tests-order [Min Depth],[Moves' Order]
This is equivalent to specifying -dto2 [Min Depth],[Min Depth],[Moves' Order]
- i.e: the "[Min Depth]," string is prefixed to the given moves order.
This option is provided for backward compatibility with older versions of Freecell Solver.
-me [Solving Method] , --method [Solving Method]
Soft-thread-specific
This option specifies the solving method that will be used to solve the board. Currently, the following methods are available:
-
a-star
- A Best-First-Search scan (not "A*" as it was once thought to be) -
bfs
- A Breadth-First Search (or BFS) scan -
dfs
- A Depth-First Search (or DFS) scan -
random-dfs
- A randomized DFS scan -
patsolve
- uses the scan of patsolve. -
soft-dfs
- A "soft" DFS scan
Starting from recent Freecell Solver versions there is no difference between
dfs
and soft-dfs
. In earlier versions, use of soft-dfs
is recommended.
random-dfs
is similar to soft-dfs
only it determines to which states to
recurse into randomly. Its behaviour will differ depending on the seed you
supply to it. (see the "-seed" option below.)
BFS does not yield good results, and a-star
has a mixed behaviour, so for
the time being I recommend using Soft-DFS or Random-DFS.
The Random-DFS scan processes every moves' random group, randomizes the states that it found and recurses into them one by one. Standalone moves that do not belong to any group, are processed in a non-random manner.
-asw [BeFS Weights] , --a-star-weight [BeFS Weights]
Soft-thread-specific
Specify weights for the a-star
(= "Best-First Search") scan, assuming it is
used. The parameter should be a comma-separated list of numbers, each one is
proportional to the weight of its corresponding test.
The numbers are, in order:
-
The number of cards out.
-
The maximal sequence move.
-
The number of cards under sequences.
-
The length of the sequences which are found over renegade cards.
-
The depth of the board in the solution.
-
The negative of the number of cards that are not placed above their parents. To get the irreversibility depth, give equal weight to this weight and to the number of cards out.
The default weights are respectively: {0.5, 0, 0.3, 0, 0.2, 0}
-seed [Seed Number]
Soft-thread-specific
Specifies a seed to be used by Freecell Solver’s internal random number
generator. This seed may alter the behaviour and speed of the random-dfs
scan.
--set-pruning [Pruning] , -sp [Pruning]
Soft-thread-specific
This option sets the pruning algorithm for the soft thread. Current valid
values are only the empty string (""
) for no pruning and r:tf
(short
for "Run: to foundations") for Horne’s rule. See:
-opt , --optimize-solution
Flare-wide
This option instructs Freecell Solver to try and optimize the solution path so it will have a smaller number of moves.
-opt-to [moves order] , --optimization-tests-order [moves order]
Flare-wide
This argument specifies the moves order for the optimization scan, in case it should be different than an order that contains all the moves that were used in all the normal scans.
--reparent-states
Flare-wide
This option specifies that states that were encountered whose depth in the states graph can be improved should be reparented to the new parent. This option can possibly make solutions shorter.
--calc-real-depth
Flare-wide
This option becomes effective only if --reparent-states
is specified. What
it does, is explicitly calculate the depth of the state by tracing its path
to the initial state. This may make depth consideration more accurate.
--patsolve-x-param [pos],[value]
Soft-thread-specific
Sets the patsolve’s scan X param (an integer) in position "pos" into "value".
Examples:
--patsolve-x-param 0,5 --patsolve-x-param 2,100
--patsolve-y-param [pos],[value]
Soft-thread-specific
Sets the patsolve Y param (a floating point number) in position "pos" into "value".
Examples:
--patsolve-y-param 0,0.5 --patsolve-y-param 1,103.2
Running Several Scans in Parallel
Starting from Version 2.4.0, Freecell Solver can run several scans in parallel on the same state collection. Each scan resides in its own "Soft Thread". By specifying several soft threads on the command line one can create and run several task-switched scans. Once one of the scans reaches a solution, the solution will be displayed.
-nst , --next-soft-thread
Hard-thread-specific
This option creates a new soft-thread and makes the following scan-specific options initialize it. For example:
$ fc-solve --method a-star -nst --method soft-dfs -to 0123467 myboard.txt
will run an BeFS scan and a Soft-DFS scan with a moves order of 0123467 on myboard.txt.
-step [Step] , --soft-thread-step [Step]
Soft-thread-specific
This option will set the number of iterations with which to run the soft thread before switching to the next one. By specifying a larger step, one can give a certain scan a longer run-time and a higher priority.
Note: after some experimentation, we have concluded that the --prelude
option normally yields better results, but -step
can be used as a fallback.
-nht , --next-hard-thread
Flare-wide
This argument lets one initialize the next hard thread. If Freecell Solver was compiled with such support, then it is possible to run each hard thread in its own system thread. Each hard-thread contains one or more soft threads.
--st-name [soft thread name]
Soft-thread-specific
This argument sets the name used to identify the current soft thread. This name can later be used to construct the prelude (see below).
--prelude [\i1@st1{,\i2@st2{,\i3@st3…}}]
Hard-thread-specific
Sets the prelude for the hard thread. At the beginning of the search, the hard thread plays a static sequence of iterations at each of the soft threads specified in the prelude, for the number of iterations specified.
For example, if you had three soft threads named "foo", "bar" and "rin", then the following prelude:
--prelude 500@foo,1590@bar,100@foo,200@rin
Will run 500 iterations in "foo", then 1590 in "bar", then 100 in "foo" again, and then 200 in "rin". After the prelude finishes, the hard thread would run the scans one after the other in the sequence they were defined for their step number.
--scans-synergy {none|dead-end-marks}
Flare-wide
Specifies the synergy between the various scans, or how much they cooperate
between themselves. none
means they do not cooperate and only share
the same memory resources. dead-end-marks
means they try to mark states
that they have withdrawn from, and states whose all their derived states are
such, as "dead ends". This may or may not improve the speed of the solution.
-ni , --next-instance
Global
This option allows one to run two or more separate solvers one after the other. If the first one returned an unsolvable verdict, then the second one would run and so on. One use of it is to run an atomic moves scan after a meta-moves scan, so we will always get an accurate verdict and still enjoy some of the speed benefits of the meta-moves scan.
-nf , --next-flare
Instance-wide
Each instance contains several flares. Flares are various alternative scans,
that are ran one after another, as specified in the --flares-plan
below
or defaulting to running only the first flare (which isn’t very useful). Out
of all the flares that are successful in solving a board, Freecell Solver
picks the one with the shortest solution.
--flare-name [flare name]
Flare-wide
This is a name that identifies the flare for use in the flares' plan.
--flares-plan [flare plan]
Instance-wide
This instance-wide parameter gives a plan for the flares as a big string. Here are some examples:
--flares-plan "RunIndef:FlareyFlare"
This plan will run the flare with the name FlareyFlare
indefinitely, until it
terminates. Once a RunIndef action is encountered, the rest of the plan is
ignored.
--flares-plan "Run:500@MyFlare,Run:2000@FooFlare"
Runs MyFlare
for 500 iterations and FooFlare
for 2,000
iterations. Note that both flares will be run and won’t share any resources
between them, and then the minimal solution out of both flares (or only
those that finished ). If no flares finished, then Freecell Solver will run
them both again for the same number of iterations each, until at least one
finishes (or it ran out of the iterations' limit).
--flares-plan "Run:500@dfs,Run:1500@befs,CP:,Run:10000@funky"
This runs the flares identified by dfs
and befs
and then see if a solution
was reached ("CP:" stands for "checkpoint"), and if so yield it. If both
flares did not reach a solution yet, or failed to solve the board, it will run
the flare funky
for 10,000 iterations and yield its solution. And like the
previous case, this solution will loop after it ended for as long as the
no flare solved the board or the program did not run out of iterations.
Using checkpoints one can yield a possibly sub-optimal (as far as solution length is concerned) solution that will still solve faster than letting all the flares run.
--flares-choice [choice]
Global
This dictates how to choose the winning flare based on if more than one yielded a solution. Possible options are:
-
--flares-choice fc_solve
- the default, which picks up the solutions based on the length of the solution in Freecell Solver’s moves. -
--flares-choice fcpro
- picks up the shortest solution based on the number of Freecell Pro moves, while not considering implicit moves to the foundations using Horne’s Prune / Raymond Prune.
-fif [factor] , --flares-iters-factor [factor]
Global
Sets a global, floating-point number, factor to multiply all the iterations counts in the flares plans. The higher it is, the longer the scans will take, but there is a greater chance more of them will succeed, and, as a result, the solution may be shorter.
As an example, the following:
--flares-plan "Run:500@MyFlare,Run:2000@FooFlare" --flares-iters-factor 2
Is equivalent to:
--flares-plan "Run:1000@MyFlare,Run:4000@FooFlare"
while:
--flares-plan "Run:500@MyFlare,Run:2000@FooFlare" --flares-iters-factor 0.5
Is equivalent to:
--flares-plan "Run:250@MyFlare,Run:1000@FooFlare"
--cache-limit [cache limit]
Global
This is a numeric limit to the LRU cache which only matters if Freecell
Solver was compiled with FCS_RCS_STATES
enabled. This value should be
a positive integer and the higher it is, the more quickly it is likely
that Freecell Solver will run, but it will also consume more memory. (The
entire point of FCS_RCS_STATES
is to conserve memory).
Meta-Options
--reset
Global
This option resets the program to its initial state, losing all the configuration logic that was input to it up to that state. Afterwards, it can be set to a different configuration, again.
--read-from-file [num_skip,]filename
Global (but context-specific).
This option will read the configuration options from a file. The format of the file is similar to that used by the UNIX Bourne Shell. (i.e: spaces denote separate arguments, double-quotes encompass arguments, backslash escapes characters).
The filename can be preceded by an optional number of the arguments to skip followed by a comma. (the default is 0)
-l [preset] , --load-config [preset]
Global (but context-specific).
Reads the configuration specified by [preset] and configures the solver accordingly. A preset is a set of command line arguments to be analyzed in the place of this option. They are read from a set of presetrc files : one installed system-wide, the other at $HOME/.freecell-solver/presetrc and the third at the path specified by the FREECELL_SOLVER_PRESETRC environment variable. You can add more presets at any of these places. (refer to http://groups.yahoo.com/group/fc-solve-discuss/message/403 for information about their format)
Presets that are shipped with Freecell Solver:
|
a meta-moves preset |
|
a meta-moves preset that yields solutions
faster on average than |
|
a meta-moves preset generated by a quota optimization algorithm. |
|
a meta-moves and flare-based preset that tends to yield very short solution, but is very slow (solves only 3 boards per second on a Pentium 4 2.4GHz). |
|
a meta-moves preset that yields solutions
faster on average than |
|
a meta-moves preset that yields solutions
faster on average than |
|
a meta-moves preset |
|
an atomic-moves preset (guarantees an accurate verdict) |
|
a meta-moves preset (that depends on Freecell
Solver 3.4.0 and above) that yields solutions faster on average than
|
|
an atomic-moves preset |
|
a meta-moves preset (that depends on Freecell
Solver 3.2.0 and above) that yields solutions faster on average than
|
|
runs "cool-jives" and then "fools-gold" |
|
a meta-moves preset that aims to minimise the outcome solution’s length. |
|
a meta-moves preset |
|
a meta-moves preset |
|
a meta-moves preset that yields solutions
faster on average than |
|
a meta-moves and flare-based preset that tends
to yield very short solutions (even in comparison to |
|
a meta-moves and flare-based preset that tends
to yield very short solutions (even in comparison to |
|
a meta-moves and flare-based preset, based
on |
|
a meta-moves preset that yields solutions
faster on average than |
|
a meta-moves and flare-based preset, based
on |
|
|
|
a meta-moves preset |
|
an atomic-moves preset that aims to minimise the outcome solution’s length. |
|
run "gooey-unknown-thing" and then "sand-stone" |
|
a meta-moves and flares based preset with
short solutions. Much faster than |
|
a meta-moves preset optimized for two-freecells' Freecell games (although it can work on other Freecell-like games as well). |
|
a meta-moves preset that yields faster
solutions on average than |
|
a preset for solving Simple Simon. Yields less false negatives than the default one, but might be slower. |
|
a meta-moves preset (that depends on Freecell
Solver 3.4.0 and above) that yields solutions faster on average than
|
|
an atomic-moves preset that solves more boards efficiently than "fools-gold". |
|
a meta-moves and flare-based preset, based
on |
|
a meta-moves preset |
They can be abbreviated into their lowercase acronym (i.e: "ak" or "rtt").
Run-time Display Options
-i , --iter-output
Global
This option tells fc-solve to print the iteration number and the recursion depth of every state which is checked, to the standard output. It’s a good way to keep track of how it’s doing, but the output slows it down a bit.
--iter-output-step [step]
Global
Prints the current iteration if -i
is specified, only every [step]
steps, where [step]
is a positive integer. For example, if you do
fc-solve -i --iter-output-step 100
, you will see this:
Iteration: 0 Iteration: 100 Iteration: 200 Iteration: 300
This option has been added in Freecell Solver 4.20.0 and is useful for speeding up the runtime process, by avoiding excessive output.
-s , --state-output
Global
This option implies -i. If specified, this option outputs the cards and formation of the board itself, for every state that is checked. "fc-solve -s" yields a nice real-time display of the progress of Freecell Solver, but you usually cannot make what is going on because it is so fast.
Signal Combinations
If you are working on a UNIX or a similar system, then you can set some run-time options in "fc-solve" by sending it some signal combinations.
If you send the fc-solve a single ABRT signal, then fc-solve will terminate the scan prematurely, and report that the iterations’s limit has been exceeded.
If you send the signal USR1, without sending any other signals before
that, then fc-solve
will output the present number of
iterations. This method is a good way to monitor an instance that takes
a long time to solve.
If you send it the signal USR2 and then USR1, then fc-solve
will print the iteration number and depth on every state that it
checks. It is the equivalent of specifying (or unspecifying) the
option -i/--iter-output.
If you send it two USR2 signals and then USR1, then fc-solve
will also print the board of every state. Again, this will only be done
assuming the iteration output is turned on.