| Version | 0.5 | |||||||||||||||||||||||||||||||||||
| Description | fsudoku solves and generates sudokus. Classical sudokus are
9*9 arrays of numbers.
Each row, each column and each of the nine 3*3 sub-arrays must contain
all
number 1..9.
fsudoku supports sudokus of the sizes 4*4, 9*9, 16*16, 25*25 which are
said to be of orders 2, 3, 4, 5 respectively. |
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| Environments | Win32 / OS/2 / Linux command line | |||||||||||||||||||||||||||||||||||
| Compiler | Windows: MS Visual C++ 6.0 OS/2: Open Watcom C++ 1.3 Linux: gcc 3.3.3 |
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| Porting | Easy. | |||||||||||||||||||||||||||||||||||
| How to use ? | fsudoku generates solutions of given problems or generates
one-solution-problems from a given problem which has more than one
solution. Each sudoku size has it's own executable, symbol set, sample problem files:
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| How does it work ? | The state of a sudoku is kept in an array of size
elements
(e.g. 81 short ints for order 3). Each element contains either the
already found or set symbol (as a negative number) or the set of
possible symbols (as bit-encoded value). A recursive back-tracking algorithm searches for all solutions. Problem generation starts at not fully solved problems that have only one solution, these are found during the search for solutions. A stupid trial-and-error algorithm tries to eliminate as much symbols from this problem as possible. |
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| How to build ? | call mk | |||||||||||||||||||||||||||||||||||
| How to install ? | no installation needed, just copy the files | |||||||||||||||||||||||||||||||||||
| Author | Frank Reglin at
suggestion by Klaus Taeschner |
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| License | General Public License | |||||||||||||||||||||||||||||||||||
| Binaries | fsudoku_bin_os2_0_5.zip fsudoku_bin_win_0_5.zip fsudoku_bin_linux386_0_5.zip |
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| Sources | fsudoku_src_0_5.zip |
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| Documentation | Calling one of the executables without arguments prints a
short one. Try to solve the sudokus in the sample directory. Try to
generate from three20.txt or three0.txt. |
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| Older versions | - |
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| Ideas for further development |
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