ruby-minisat is ruby binding for MiniSat, an open-source SAT solver.


$ gem install ruby-minisat


A brief example that solves a simple SAT problem:

# solve (a or b) and (not a or b) and (a or not b)

require "minisat"
solver =

a = solver.new_var
b = solver.new_var

solver << [a, b] << [-a, b] << [a, -b]

p solver.solve  #=> true (satisfiable)

p solver[a]  #=> true
p solver[b]  #=> true

For more examples, see the examples directory in the distribution.


ruby-minisat is covered under the MIT License. This package includes MiniSat in the directory minisat which is also distributed under the MIT License. See minisat/minisat/LICENSE.


  1. Fork it
  2. Create your feature branch (git checkout -b my-new-feature)
  3. Commit your changes (git commit -am 'Add some feature')
  4. Push to the branch (git push origin my-new-feature)
  5. Create new Pull Request