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2. Planar SAT - Wikipedia

   en.wikipedia.org/wiki/Planar_SAT

   Example of a planar SAT problem. The black edges correspond to non-inverted variables and the red edges correspond to inverted variables. In computer science, the planar 3-satisfiability problem (abbreviated PLANAR 3SAT or PL3SAT) is an extension of the classical Boolean 3-satisfiability problem to a planar incidence graph.

3. Boolean satisfiability problem - Wikipedia

   en.wikipedia.org/wiki/Boolean_satisfiability_problem

   A variant of the 3-satisfiability problem is the one-in-three 3-SAT (also known variously as 1-in-3-SAT and exactly-1 3-SAT). Given a conjunctive normal form with three literals per clause, the problem is to determine whether there exists a truth assignment to the variables so that each clause has exactly one TRUE literal (and thus exactly two ...

4. Horn-satisfiability - Wikipedia

   en.wikipedia.org/wiki/Horn-satisfiability

   The problem of Horn satisfiability is solvable in linear time. [5] The problem of deciding the truth of quantified Horn formulae can be also solved in polynomial time. [6] A polynomial-time algorithm for Horn satisfiability is recursive:

5. SAT solver - Wikipedia

   en.wikipedia.org/wiki/SAT_solver

   In computer science and formal methods, a SAT solver is a computer program which aims to solve the Boolean satisfiability problem.On input a formula over Boolean variables, such as "(x or y) and (x or not y)", a SAT solver outputs whether the formula is satisfiable, meaning that there are possible values of x and y which make the formula true, or unsatisfiable, meaning that there are no such ...

6. Maximum satisfiability problem - Wikipedia

   en.wikipedia.org/wiki/Maximum_satisfiability_problem

   The soft satisfiability problem (soft-SAT), given a set of SAT problems, asks for the maximum number of those problems which can be satisfied by any assignment. [16] The minimum satisfiability problem. The MAX-SAT problem can be extended to the case where the variables of the constraint satisfaction problem belong to the set

7. Today’s NYT ‘Strands’ Hints, Spangram and Answers ... - AOL

   www.aol.com/today-nyt-strands-hints-spangram...

   For every 3 non-theme words you find, you earn a hint. Hints show the letters of a theme word. If there is already an active hint on the board, a hint will show that word’s letter order ...