Freecell Solver

Freecell Solver is an open source web-based software that automatically solves games of Freecell and similar Solitaire variants.

Freecell Solver can solve the following game types: American Canister, Baker’s Dozen, Baker’s Game, Bath, Beleaguered Castle, Box Fan, British Canister, Canister, Castles in Spain, Cat's Tail, Challenge Freecell, Citadel, Cruel, Deep, Eight Off, Exiled Kings, Fan, Fastness, Forecell, Free Fan, Freecell, Good Measure, Kentish, King Only Baker’s Game, KingCell, Kings
Lightweight, Ocean Towers, Opus, Penelope's Web, Penguin, Portuguese Solitaire, Relaxed Freecell, Relaxed Seahaven Towers, Repair, Retinue, Seahaven Towers, Seven by Five, Seven by Four, Simple Simon, Snake
Somerset, Spanish Patience II, Streets and Alleys, Stronghold, Super Challenge Freecell, and Tuxedo.

Freecell Solver is written in ANSI C and requires a C compiler to be built. Nevertheless, binaries for Linux and Windows 32-bit are available for download.

What is new in this release:

• The Windows NSIS package should now build, install, and run properly.
• A bug in command line option processing was fixed.

What is new in version 3.20.1:

• The Win32/MinGW build process was fixed.

What is new in version 3.20.0:

• This version adds a major speed optimization to the Simple Simon solving code, a "qualified-seed-improved" ("qsi" for short) preset for shorter solutions, and many cleanups, refactorings, and optimizations.

What is new in version 3.18.1:

• A JavaScript port was added (compiled from the C sources).
• The executables and tests now work properly on 32-bit systems.
• The RPM .spec now runs the test suite.

What is new in version 3.16.0:

• Options have been added to help reduce the average solution length ("--flares-choice" and "--flares-iters-factor").
• There are two new presets for doing that.
• This release adds a memory optimisation for flares-based presets.

What is new in version 3.14.0:

• This version adds a sixth Best-first-search weight of the negated number of cards not above their parents, implements "random-dfs" ordering based on this a-star weight, adds several new commandline themes ("-l as" for speed, and "-l mf" for short solutions), implements "DeBondt" state encoding for the dbm_fc_solvers, and implement a prune for Baker's Dozen and similar games.
• It drops support for compiling with Microsoft Visual C++ and other non-GCC-compatible compilers.

What is new in version 3.12.0:

• This version adds the --show-exceeded-limits flag for less ambiguous input.
• It has a fix for misbehaviour with using "-sp r:tf" in conjunction with "-opt".
• It adds the "three-eighty" preset.
• Some enhancements have been made to the so-called "dbm_fc_solver" and a new "fcc_fc_solver", based on Fully Connected Components.
• Support has been added for building and testing the distribution in an out-of-tree build.

What is new in version 3.10.0:

• Convert the references to the web-site and repository away from berlios.de, as it was announced it will become offline.
• Bug fix: correct the handling of foundations with values 0 (e.g: +H-0+,+S-0+ ).
• Bug fix: made the +-mi+/+--max-iters+ flag global for all instances.Previously, it affected only the last one.
• Add an experimental +delta_states.c+ implementation and +dbm_solver.c+ that uses it to drive a Freecell Solver scan with an on-disk database (currently Google LevelDB and Berkeley DB are supported). So far it seems that with a limited cache size, this does not scale too well.
• Add the experimental +pruner-main.c+ (not installed by default).
• Add support for generating "all_in_a_row" deals to +make_pysol_freecll_board.py+
• Many small optimizations and cleanups.

What is new in version 3.8.0:

• This release fixes some crashes using --trim-max-stored-states, adds a more meaningful man page instead of the token one that was previously present, adds scripts/parallel-range-solver-total to solve a range of deals in parallel by splitting them into chunks, and many smaller improvements and fixes.
• We also forgot to mention the 3.6.0 release, which fixed the installation of fcs_dllexport.h, added the --tracemem compile time option, added a bug fix for incrementally increasing the iterations/stored-states limits, added a built-in version of kazlib's balanced binary search tree as a possible back-end for storage, and had some other improvements.