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flow_solver

Fast automated solver for Flow Free in a single C or Python file.

Full writeup of C version at https://mzucker.github.io/2016/08/28/flow-solver.html.

Python writeup at https://mzucker.github.io/2016/09/02/eating-sat-flavored-crow.html.

Building the C version

No dependencies to install, just do this:

cd /path/to/flow_solver
mkdir build
cd build
cmake .. -DCMAKE_BUILD_TYPE=Release
make

Using the C version:

From the build directory, try:

./flow_solver ../puzzles/jumbo_14x14_01.txt

Using the Python version:

Make sure you have pycosat installed. If not, try:

pip install pycosat

Then, from the project root directory, try:

./pyflowsolver.py puzzles/jumbo_14x14_01.txt

Puzzle file format

Plain-ASCII file, one line per row of puzzle. Use the following characters to specify color:

Letter Color
R red
B blue
Y yellow
G green
O orange
C cyan
M magenta
m maroon
P purple
A gray
W white
g bright green
T tan
b dark blue
c dark cyan
p pink

Any non-alphabetical, non-newline character becomes a blank space. Puzzle size is set by the number of characters before the first newline.

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Fast automated solver for Flow Free in a single C or Python file.

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